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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:17:45,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:17:45,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:17:45,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 23:17:45,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:17:45,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:17:45,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:17:45,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:17:45,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:17:45,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:17:45,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:17:45,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:17:45,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:17:45,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:17:45,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:17:45,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:17:45,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 23:17:45,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:17:45,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:17:45,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:17:45,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:17:45,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:17:45,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:17:45,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:17:45,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:17:45,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:17:45,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:17:45,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:17:45,054 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 23:17:45,079 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:17:45,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:17:45,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:17:45,080 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:17:45,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:17:45,084 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:17:45,084 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:17:45,084 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:17:45,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:17:45,084 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:17:45,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:17:45,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:17:45,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:17:45,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:17:45,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:17:45,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:17:45,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:17:45,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:17:45,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:17:45,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:17:45,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:17:45,090 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:17:45,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:17:45,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:17:45,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:17:45,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:17:45,091 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:17:45,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:17:45,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:17:45,092 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:17:45,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:17:45,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:17:45,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:17:45,138 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:17:45,138 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:17:45,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2019-09-09 23:17:45,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bf275d/82399708ab7c4373b090a5a7aed3c157/FLAG8cd040ad8 [2019-09-09 23:17:46,245 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:17:46,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2019-09-09 23:17:46,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bf275d/82399708ab7c4373b090a5a7aed3c157/FLAG8cd040ad8 [2019-09-09 23:17:46,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bf275d/82399708ab7c4373b090a5a7aed3c157 [2019-09-09 23:17:46,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:17:46,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:17:46,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:17:46,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:17:46,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:17:46,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:17:46" (1/1) ... [2019-09-09 23:17:46,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cac797e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:46, skipping insertion in model container [2019-09-09 23:17:46,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:17:46" (1/1) ... [2019-09-09 23:17:46,570 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:17:46,797 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:17:49,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:17:49,029 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:17:50,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:17:50,443 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:17:50,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50 WrapperNode [2019-09-09 23:17:50,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:17:50,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:17:50,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:17:50,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:17:50,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (1/1) ... [2019-09-09 23:17:50,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:17:50,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:17:50,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:17:50,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:17:50,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (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 23:17:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:17:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:17:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:17:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:17:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:17:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:17:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:17:50,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:17:50,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:17:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:17:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:17:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:17:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:17:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:17:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:17:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:17:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:17:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:17:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:17:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:17:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:18:01,186 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:18:01,186 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:18:01,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:18:01 BoogieIcfgContainer [2019-09-09 23:18:01,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:18:01,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:18:01,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:18:01,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:18:01,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:17:46" (1/3) ... [2019-09-09 23:18:01,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d789f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:18:01, skipping insertion in model container [2019-09-09 23:18:01,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:17:50" (2/3) ... [2019-09-09 23:18:01,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d789f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:18:01, skipping insertion in model container [2019-09-09 23:18:01,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:18:01" (3/3) ... [2019-09-09 23:18:01,198 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label27.c [2019-09-09 23:18:01,210 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:18:01,221 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:18:01,242 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:18:01,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:18:01,277 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:18:01,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:18:01,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:18:01,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:18:01,278 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:18:01,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:18:01,278 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:18:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:18:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-09 23:18:01,351 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:18:01,352 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] [2019-09-09 23:18:01,354 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:18:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:18:01,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1728106772, now seen corresponding path program 1 times [2019-09-09 23:18:01,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:18:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:01,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:18:01,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:01,415 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:18:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:18:01,770 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 23:18:01,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:18:01,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:18:01,774 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:18:01,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:18:01,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:18:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:18:01,808 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-09 23:18:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:18:18,780 INFO L93 Difference]: Finished difference Result 4690 states and 7030 transitions. [2019-09-09 23:18:18,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:18:18,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-09-09 23:18:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:18:18,836 INFO L225 Difference]: With dead ends: 4690 [2019-09-09 23:18:18,836 INFO L226 Difference]: Without dead ends: 4602 [2019-09-09 23:18:18,838 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 23:18:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2019-09-09 23:18:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 3138. [2019-09-09 23:18:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2019-09-09 23:18:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4994 transitions. [2019-09-09 23:18:19,041 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4994 transitions. Word has length 33 [2019-09-09 23:18:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:18:19,044 INFO L475 AbstractCegarLoop]: Abstraction has 3138 states and 4994 transitions. [2019-09-09 23:18:19,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:18:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4994 transitions. [2019-09-09 23:18:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-09 23:18:19,051 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:18:19,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:19,052 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:18:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:18:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -912055232, now seen corresponding path program 1 times [2019-09-09 23:18:19,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:18:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:19,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:18:19,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:19,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:18:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:18:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:18:19,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:18:19,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:18:19,302 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:18:19,304 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:18:19,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:18:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:18:19,305 INFO L87 Difference]: Start difference. First operand 3138 states and 4994 transitions. Second operand 6 states. [2019-09-09 23:18:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:18:32,561 INFO L93 Difference]: Finished difference Result 6121 states and 9490 transitions. [2019-09-09 23:18:32,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:18:32,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-09 23:18:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:18:32,598 INFO L225 Difference]: With dead ends: 6121 [2019-09-09 23:18:32,598 INFO L226 Difference]: Without dead ends: 6121 [2019-09-09 23:18:32,599 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 23:18:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2019-09-09 23:18:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 6066. [2019-09-09 23:18:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2019-09-09 23:18:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9393 transitions. [2019-09-09 23:18:32,750 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9393 transitions. Word has length 104 [2019-09-09 23:18:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:18:32,750 INFO L475 AbstractCegarLoop]: Abstraction has 6066 states and 9393 transitions. [2019-09-09 23:18:32,750 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:18:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9393 transitions. [2019-09-09 23:18:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-09 23:18:32,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:18:32,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:32,753 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:18:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:18:32,754 INFO L82 PathProgramCache]: Analyzing trace with hash -611181303, now seen corresponding path program 1 times [2019-09-09 23:18:32,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:18:32,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:32,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:18:32,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:32,755 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:18:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:18:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:18:32,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:18:32,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:18:32,913 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:18:32,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:18:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:18:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:18:32,919 INFO L87 Difference]: Start difference. First operand 6066 states and 9393 transitions. Second operand 6 states. [2019-09-09 23:18:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:18:47,724 INFO L93 Difference]: Finished difference Result 12163 states and 19116 transitions. [2019-09-09 23:18:47,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:18:47,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2019-09-09 23:18:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:18:47,780 INFO L225 Difference]: With dead ends: 12163 [2019-09-09 23:18:47,780 INFO L226 Difference]: Without dead ends: 12163 [2019-09-09 23:18:47,781 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 23:18:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12163 states. [2019-09-09 23:18:48,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12163 to 12000. [2019-09-09 23:18:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12000 states. [2019-09-09 23:18:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 18689 transitions. [2019-09-09 23:18:48,082 INFO L78 Accepts]: Start accepts. Automaton has 12000 states and 18689 transitions. Word has length 106 [2019-09-09 23:18:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:18:48,086 INFO L475 AbstractCegarLoop]: Abstraction has 12000 states and 18689 transitions. [2019-09-09 23:18:48,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:18:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states and 18689 transitions. [2019-09-09 23:18:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-09 23:18:48,098 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:18:48,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:48,099 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:18:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:18:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -215811262, now seen corresponding path program 1 times [2019-09-09 23:18:48,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:18:48,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:48,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:18:48,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:18:48,104 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:18:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:18:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:18:48,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:18:48,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:18:48,291 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:18:48,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:18:48,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:18:48,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:18:48,294 INFO L87 Difference]: Start difference. First operand 12000 states and 18689 transitions. Second operand 6 states. [2019-09-09 23:19:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:19:03,989 INFO L93 Difference]: Finished difference Result 24540 states and 38174 transitions. [2019-09-09 23:19:03,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 23:19:03,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2019-09-09 23:19:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:19:04,090 INFO L225 Difference]: With dead ends: 24540 [2019-09-09 23:19:04,090 INFO L226 Difference]: Without dead ends: 24540 [2019-09-09 23:19:04,091 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 23:19:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24540 states. [2019-09-09 23:19:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24540 to 24252. [2019-09-09 23:19:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24252 states. [2019-09-09 23:19:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24252 states to 24252 states and 37269 transitions. [2019-09-09 23:19:04,657 INFO L78 Accepts]: Start accepts. Automaton has 24252 states and 37269 transitions. Word has length 114 [2019-09-09 23:19:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:19:04,660 INFO L475 AbstractCegarLoop]: Abstraction has 24252 states and 37269 transitions. [2019-09-09 23:19:04,660 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:19:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 24252 states and 37269 transitions. [2019-09-09 23:19:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 23:19:04,666 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:19:04,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:04,667 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:19:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:19:04,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2107567464, now seen corresponding path program 1 times [2019-09-09 23:19:04,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:19:04,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:04,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:19:04,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:04,671 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:19:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:19:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:19:04,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:19:04,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:19:04,821 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:19:04,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:19:04,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:19:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:19:04,823 INFO L87 Difference]: Start difference. First operand 24252 states and 37269 transitions. Second operand 5 states. [2019-09-09 23:19:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:19:22,312 INFO L93 Difference]: Finished difference Result 47966 states and 68089 transitions. [2019-09-09 23:19:22,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:19:22,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-09-09 23:19:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:19:22,467 INFO L225 Difference]: With dead ends: 47966 [2019-09-09 23:19:22,467 INFO L226 Difference]: Without dead ends: 47966 [2019-09-09 23:19:22,468 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 23:19:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47966 states. [2019-09-09 23:19:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47966 to 44272. [2019-09-09 23:19:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44272 states. [2019-09-09 23:19:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 62763 transitions. [2019-09-09 23:19:23,530 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 62763 transitions. Word has length 134 [2019-09-09 23:19:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:19:23,532 INFO L475 AbstractCegarLoop]: Abstraction has 44272 states and 62763 transitions. [2019-09-09 23:19:23,532 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:19:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 62763 transitions. [2019-09-09 23:19:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-09-09 23:19:23,535 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:19:23,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:23,536 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:19:23,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:19:23,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1221994523, now seen corresponding path program 1 times [2019-09-09 23:19:23,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:19:23,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:23,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:19:23,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:23,541 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:19:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:19:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:19:23,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:19:23,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:19:23,754 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:19:23,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:19:23,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:19:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:19:23,755 INFO L87 Difference]: Start difference. First operand 44272 states and 62763 transitions. Second operand 6 states. [2019-09-09 23:19:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:19:38,993 INFO L93 Difference]: Finished difference Result 65430 states and 92692 transitions. [2019-09-09 23:19:38,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:19:38,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2019-09-09 23:19:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:19:39,191 INFO L225 Difference]: With dead ends: 65430 [2019-09-09 23:19:39,192 INFO L226 Difference]: Without dead ends: 65430 [2019-09-09 23:19:39,192 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 23:19:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65430 states. [2019-09-09 23:19:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65430 to 64982. [2019-09-09 23:19:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64982 states. [2019-09-09 23:19:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64982 states to 64982 states and 89754 transitions. [2019-09-09 23:19:42,010 INFO L78 Accepts]: Start accepts. Automaton has 64982 states and 89754 transitions. Word has length 197 [2019-09-09 23:19:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:19:42,010 INFO L475 AbstractCegarLoop]: Abstraction has 64982 states and 89754 transitions. [2019-09-09 23:19:42,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:19:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 64982 states and 89754 transitions. [2019-09-09 23:19:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-09-09 23:19:42,021 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:19:42,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:42,022 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:19:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:19:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash 404791086, now seen corresponding path program 1 times [2019-09-09 23:19:42,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:19:42,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:42,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:19:42,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:19:42,024 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:19:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:19:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 23:19:42,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:19:42,488 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:19:42,489 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 520 with the following transitions: [2019-09-09 23:19:42,492 INFO L207 CegarAbsIntRunner]: [0], [1], [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], [5093], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5398], [5400], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [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], [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], [6834], [6835], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:19:42,570 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:19:42,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:20:59,947 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:20:59,950 INFO L272 AbstractInterpreter]: Visited 487 different actions 487 times. Never merged. Never widened. Performed 1040 root evaluator evaluations with a maximum evaluation depth of 15. Performed 1040 inverse root evaluator evaluations with a maximum inverse evaluation depth of 15. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:20:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:20:59,953 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:21:52,933 INFO L227 lantSequenceWeakener]: Weakened 502 states. On average, predicates are now at 75.18% of their original sizes. [2019-09-09 23:21:52,938 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:21:53,107 INFO L420 sIntCurrentIteration]: We unified 518 AI predicates to 518 [2019-09-09 23:21:53,107 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:21:53,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:21:53,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2019-09-09 23:21:53,108 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:21:53,109 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-09 23:21:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-09 23:21:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-09-09 23:21:53,110 INFO L87 Difference]: Start difference. First operand 64982 states and 89754 transitions. Second operand 13 states.