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/Problem03_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:59:00,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:59:00,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:59:00,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:59:00,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:59:00,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:59:00,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:59:00,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:59:00,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:59:00,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:59:00,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:59:00,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:59:00,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:59:00,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:59:00,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:59:00,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:59:00,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:59:00,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:59:00,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:59:00,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:59:00,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:59:00,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:59:00,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:59:00,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:59:00,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:59:00,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:59:00,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:59:00,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:59:00,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:59:00,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:59:00,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:59:00,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:59:00,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:59:00,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:59:00,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:59:00,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:59:00,136 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 [2019-10-14 23:59:00,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:59:00,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:59:00,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:59:00,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:59:00,153 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:59:00,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:59:00,153 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:59:00,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:59:00,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:59:00,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:59:00,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:59:00,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:59:00,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:59:00,154 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:59:00,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:59:00,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:59:00,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:59:00,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:59:00,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:59:00,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:59:00,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:59:00,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:59:00,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:59:00,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:59:00,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:59:00,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:59:00,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:59:00,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:59:00,158 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 [2019-10-14 23:59:00,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:59:00,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:59:00,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:59:00,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:59:00,456 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:59:00,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2019-10-14 23:59:00,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b8bb6e0/235f265511cf4560b6a36c97350ee8b4/FLAG4d64fd997 [2019-10-14 23:59:01,212 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:59:01,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2019-10-14 23:59:01,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b8bb6e0/235f265511cf4560b6a36c97350ee8b4/FLAG4d64fd997 [2019-10-14 23:59:01,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b8bb6e0/235f265511cf4560b6a36c97350ee8b4 [2019-10-14 23:59:01,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:59:01,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:59:01,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:01,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:59:01,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:59:01,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:01" (1/1) ... [2019-10-14 23:59:01,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1168eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:01, skipping insertion in model container [2019-10-14 23:59:01,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:01" (1/1) ... [2019-10-14 23:59:01,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:59:01,554 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:59:02,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:02,325 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:02,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:02,634 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:02,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02 WrapperNode [2019-10-14 23:59:02,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:02,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:02,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:02,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:02,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (1/1) ... [2019-10-14 23:59:02,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:02,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:02,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:02,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:02,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (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 [2019-10-14 23:59:02,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:02,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:02,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:02,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:02,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:02,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:02,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:02,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:02,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:02,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:05,178 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:05,178 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:05,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:05 BoogieIcfgContainer [2019-10-14 23:59:05,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:05,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:05,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:05,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:01" (1/3) ... [2019-10-14 23:59:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb293d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:05, skipping insertion in model container [2019-10-14 23:59:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:02" (2/3) ... [2019-10-14 23:59:05,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb293d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:05, skipping insertion in model container [2019-10-14 23:59:05,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:05" (3/3) ... [2019-10-14 23:59:05,203 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label48.c [2019-10-14 23:59:05,214 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:05,224 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:05,241 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:05,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:05,295 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:05,295 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:05,295 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:05,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:05,296 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:05,296 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:05,296 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-14 23:59:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-14 23:59:05,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:05,389 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:05,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:05,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1739867384, now seen corresponding path program 1 times [2019-10-14 23:59:05,412 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:05,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810905533] [2019-10-14 23:59:05,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:05,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:05,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:06,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810905533] [2019-10-14 23:59:06,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:06,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:59:06,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123539855] [2019-10-14 23:59:06,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:59:06,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:06,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:59:06,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:06,489 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-10-14 23:59:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:08,741 INFO L93 Difference]: Finished difference Result 1054 states and 1907 transitions. [2019-10-14 23:59:08,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:59:08,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2019-10-14 23:59:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:08,770 INFO L225 Difference]: With dead ends: 1054 [2019-10-14 23:59:08,770 INFO L226 Difference]: Without dead ends: 677 [2019-10-14 23:59:08,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-10-14 23:59:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 463. [2019-10-14 23:59:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-14 23:59:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 726 transitions. [2019-10-14 23:59:08,881 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 726 transitions. Word has length 189 [2019-10-14 23:59:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:08,882 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 726 transitions. [2019-10-14 23:59:08,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:59:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 726 transitions. [2019-10-14 23:59:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-14 23:59:08,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:08,892 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:59:08,893 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1270539508, now seen corresponding path program 1 times [2019-10-14 23:59:08,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:08,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506744284] [2019-10-14 23:59:08,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:08,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:08,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:09,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506744284] [2019-10-14 23:59:09,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:09,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:59:09,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521971714] [2019-10-14 23:59:09,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:59:09,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:09,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:59:09,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:59:09,347 INFO L87 Difference]: Start difference. First operand 463 states and 726 transitions. Second operand 3 states. [2019-10-14 23:59:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:10,492 INFO L93 Difference]: Finished difference Result 1347 states and 2135 transitions. [2019-10-14 23:59:10,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:59:10,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-14 23:59:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:10,501 INFO L225 Difference]: With dead ends: 1347 [2019-10-14 23:59:10,501 INFO L226 Difference]: Without dead ends: 890 [2019-10-14 23:59:10,504 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 [2019-10-14 23:59:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-14 23:59:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 889. [2019-10-14 23:59:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2019-10-14 23:59:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1305 transitions. [2019-10-14 23:59:10,546 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1305 transitions. Word has length 201 [2019-10-14 23:59:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:10,547 INFO L462 AbstractCegarLoop]: Abstraction has 889 states and 1305 transitions. [2019-10-14 23:59:10,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:59:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1305 transitions. [2019-10-14 23:59:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-14 23:59:10,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:10,553 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:59:10,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 940059888, now seen corresponding path program 1 times [2019-10-14 23:59:10,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:10,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710522446] [2019-10-14 23:59:10,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:10,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:10,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:10,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710522446] [2019-10-14 23:59:10,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:10,869 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:59:10,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306807314] [2019-10-14 23:59:10,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:59:10,871 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:59:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:59:10,872 INFO L87 Difference]: Start difference. First operand 889 states and 1305 transitions. Second operand 3 states. [2019-10-14 23:59:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:11,963 INFO L93 Difference]: Finished difference Result 2618 states and 3906 transitions. [2019-10-14 23:59:11,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:59:11,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2019-10-14 23:59:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:11,977 INFO L225 Difference]: With dead ends: 2618 [2019-10-14 23:59:11,977 INFO L226 Difference]: Without dead ends: 1735 [2019-10-14 23:59:11,981 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 [2019-10-14 23:59:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2019-10-14 23:59:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1718. [2019-10-14 23:59:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2019-10-14 23:59:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2510 transitions. [2019-10-14 23:59:12,086 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2510 transitions. Word has length 203 [2019-10-14 23:59:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:12,089 INFO L462 AbstractCegarLoop]: Abstraction has 1718 states and 2510 transitions. [2019-10-14 23:59:12,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:59:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2510 transitions. [2019-10-14 23:59:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-14 23:59:12,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:12,098 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:59:12,098 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:12,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2138348213, now seen corresponding path program 1 times [2019-10-14 23:59:12,099 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:12,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032065238] [2019-10-14 23:59:12,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:12,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:12,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:12,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032065238] [2019-10-14 23:59:12,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:12,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:59:12,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340592760] [2019-10-14 23:59:12,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:59:12,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:12,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:59:12,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:59:12,246 INFO L87 Difference]: Start difference. First operand 1718 states and 2510 transitions. Second operand 6 states. [2019-10-14 23:59:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:14,080 INFO L93 Difference]: Finished difference Result 5243 states and 8485 transitions. [2019-10-14 23:59:14,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:59:14,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2019-10-14 23:59:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:14,121 INFO L225 Difference]: With dead ends: 5243 [2019-10-14 23:59:14,121 INFO L226 Difference]: Without dead ends: 3531 [2019-10-14 23:59:14,129 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 [2019-10-14 23:59:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2019-10-14 23:59:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3437. [2019-10-14 23:59:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2019-10-14 23:59:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5136 transitions. [2019-10-14 23:59:14,327 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5136 transitions. Word has length 206 [2019-10-14 23:59:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:14,328 INFO L462 AbstractCegarLoop]: Abstraction has 3437 states and 5136 transitions. [2019-10-14 23:59:14,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:59:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5136 transitions. [2019-10-14 23:59:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-14 23:59:14,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:14,350 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:59:14,351 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:14,351 INFO L82 PathProgramCache]: Analyzing trace with hash 284519507, now seen corresponding path program 1 times [2019-10-14 23:59:14,352 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:14,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993967429] [2019-10-14 23:59:14,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:14,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:14,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:14,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993967429] [2019-10-14 23:59:14,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827775643] [2019-10-14 23:59:14,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:59:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:14,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:59:14,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:59:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:14,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:59:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:15,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [524568394] [2019-10-14 23:59:15,140 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 221 [2019-10-14 23:59:15,226 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:59:15,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)