java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:04:42,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:04:42,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:04:42,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:04:42,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:04:42,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:04:42,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:04:42,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:04:42,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:04:42,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:04:42,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:04:42,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:04:42,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:04:42,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:04:42,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:04:42,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:04:42,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:04:42,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:04:42,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:04:42,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:04:42,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:04:42,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:04:42,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:04:42,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:04:42,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:04:42,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:04:42,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:04:42,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:04:42,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:04:42,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:04:42,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:04:42,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:04:42,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:04:42,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:04:42,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:04:42,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:04:42,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:04:42,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:04:42,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:04:42,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:04:42,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:04:42,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 00:04:42,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:04:42,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:04:42,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:04:42,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:04:42,162 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:04:42,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:04:42,162 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:04:42,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:04:42,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:04:42,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:04:42,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:04:42,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:04:42,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:04:42,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:04:42,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:04:42,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:04:42,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:04:42,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:04:42,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:04:42,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:04:42,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:04:42,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:42,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:04:42,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:04:42,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:04:42,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:04:42,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:04:42,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:04:42,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:04:42,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:04:42,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:04:42,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:04:42,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:04:42,503 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:04:42,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-15 00:04:42,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0028d10f/09fda714474a45fba5d9adca21264a17/FLAG309f0b463 [2019-10-15 00:04:43,398 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:04:43,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-15 00:04:43,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0028d10f/09fda714474a45fba5d9adca21264a17/FLAG309f0b463 [2019-10-15 00:04:43,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0028d10f/09fda714474a45fba5d9adca21264a17 [2019-10-15 00:04:43,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:04:43,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:04:43,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:43,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:04:43,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:04:43,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:43" (1/1) ... [2019-10-15 00:04:43,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7688e8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43, skipping insertion in model container [2019-10-15 00:04:43,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:43" (1/1) ... [2019-10-15 00:04:43,487 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:04:43,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:04:45,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:45,316 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:04:46,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:46,067 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:04:46,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46 WrapperNode [2019-10-15 00:04:46,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:46,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:04:46,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:04:46,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:04:46,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:04:46,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:04:46,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:04:46,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:04:46,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 00:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 00:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:04:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 00:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 00:04:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:04:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:04:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:04:51,609 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:04:51,610 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:04:51,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:51 BoogieIcfgContainer [2019-10-15 00:04:51,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:04:51,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:04:51,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:04:51,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:04:51,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:43" (1/3) ... [2019-10-15 00:04:51,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb26b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:51, skipping insertion in model container [2019-10-15 00:04:51,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (2/3) ... [2019-10-15 00:04:51,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb26b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:51, skipping insertion in model container [2019-10-15 00:04:51,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:51" (3/3) ... [2019-10-15 00:04:51,624 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-15 00:04:51,634 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:04:51,647 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:04:51,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:04:51,706 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:04:51,706 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:04:51,706 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:04:51,706 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:04:51,706 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:04:51,707 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:04:51,707 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:04:51,707 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:04:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-15 00:04:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-15 00:04:51,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:51,767 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:04:51,769 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:51,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:51,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1204475243, now seen corresponding path program 1 times [2019-10-15 00:04:51,787 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:51,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70228676] [2019-10-15 00:04:51,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:51,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:51,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:52,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70228676] [2019-10-15 00:04:52,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:52,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:04:52,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339807671] [2019-10-15 00:04:52,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:04:52,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:04:52,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:04:52,246 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-15 00:04:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:57,452 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-10-15 00:04:57,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:04:57,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-10-15 00:04:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:57,485 INFO L225 Difference]: With dead ends: 2443 [2019-10-15 00:04:57,485 INFO L226 Difference]: Without dead ends: 1542 [2019-10-15 00:04:57,496 INFO L600 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 [2019-10-15 00:04:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-15 00:04:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-15 00:04:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-15 00:04:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-10-15 00:04:57,691 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 70 [2019-10-15 00:04:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:57,692 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-10-15 00:04:57,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:04:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-10-15 00:04:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 00:04:57,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:57,710 INFO L380 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, 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] [2019-10-15 00:04:57,711 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:57,712 INFO L82 PathProgramCache]: Analyzing trace with hash 362891361, now seen corresponding path program 1 times [2019-10-15 00:04:57,713 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:57,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719528682] [2019-10-15 00:04:57,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:57,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:57,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:57,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719528682] [2019-10-15 00:04:57,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:57,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:04:57,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010956004] [2019-10-15 00:04:57,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:57,965 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:04:57,966 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-10-15 00:05:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:04,836 INFO L93 Difference]: Finished difference Result 4690 states and 8403 transitions. [2019-10-15 00:05:04,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:05:04,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-15 00:05:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:04,867 INFO L225 Difference]: With dead ends: 4690 [2019-10-15 00:05:04,867 INFO L226 Difference]: Without dead ends: 3154 [2019-10-15 00:05:04,872 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:05:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-10-15 00:05:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-10-15 00:05:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-10-15 00:05:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-10-15 00:05:04,962 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 143 [2019-10-15 00:05:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:05:04,963 INFO L462 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-10-15 00:05:04,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:05:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-10-15 00:05:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 00:05:04,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:05:04,967 INFO L380 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, 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] [2019-10-15 00:05:04,967 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:05:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:05:04,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2056007356, now seen corresponding path program 1 times [2019-10-15 00:05:04,968 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:05:04,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904400111] [2019-10-15 00:05:04,968 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:04,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:04,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:05:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:05,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904400111] [2019-10-15 00:05:05,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:05:05,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:05:05,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039389914] [2019-10-15 00:05:05,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:05:05,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:05:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:05:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:05:05,144 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 6 states. [2019-10-15 00:05:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:12,545 INFO L93 Difference]: Finished difference Result 9491 states and 16483 transitions. [2019-10-15 00:05:12,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:05:12,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-10-15 00:05:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:12,598 INFO L225 Difference]: With dead ends: 9491 [2019-10-15 00:05:12,598 INFO L226 Difference]: Without dead ends: 6375 [2019-10-15 00:05:12,607 INFO L600 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 [2019-10-15 00:05:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2019-10-15 00:05:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6333. [2019-10-15 00:05:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2019-10-15 00:05:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 10769 transitions. [2019-10-15 00:05:12,807 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 10769 transitions. Word has length 148 [2019-10-15 00:05:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:05:12,809 INFO L462 AbstractCegarLoop]: Abstraction has 6333 states and 10769 transitions. [2019-10-15 00:05:12,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:05:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 10769 transitions. [2019-10-15 00:05:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 00:05:12,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:05:12,812 INFO L380 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, 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] [2019-10-15 00:05:12,812 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:05:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:05:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash -857112276, now seen corresponding path program 1 times [2019-10-15 00:05:12,813 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:05:12,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641651808] [2019-10-15 00:05:12,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:12,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:12,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:05:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:13,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641651808] [2019-10-15 00:05:13,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:05:13,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:05:13,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454117925] [2019-10-15 00:05:13,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:05:13,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:05:13,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:05:13,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:05:13,017 INFO L87 Difference]: Start difference. First operand 6333 states and 10769 transitions. Second operand 6 states.