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/Problem01_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:54:42,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:54:42,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:54:42,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:54:42,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:54:42,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:54:42,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:54:42,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:54:42,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:54:42,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:54:42,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:54:42,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:54:42,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:54:42,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:54:42,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:54:42,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:54:42,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:54:42,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:54:42,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:54:42,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:54:42,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:54:42,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:54:42,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:54:42,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:54:42,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:54:42,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:54:42,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:54:42,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:54:42,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:54:42,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:54:42,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:54:42,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:54:42,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:54:42,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:54:42,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:54:42,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:54:42,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:54:42,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:54:42,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:54:42,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:54:42,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:54:42,595 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 23:54:42,617 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:54:42,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:54:42,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:54:42,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:54:42,619 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:54:42,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:54:42,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:54:42,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:54:42,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:54:42,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:54:42,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:54:42,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:54:42,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:54:42,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:54:42,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:54:42,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:54:42,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:54:42,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:54:42,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:54:42,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:54:42,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:54:42,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:54:42,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:54:42,624 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 23:54:42,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:54:42,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:54:42,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:54:42,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:54:42,916 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:54:42,917 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label45.c [2019-10-14 23:54:42,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7541ec644/9c9f48acbf3a48afb964ce511959e615/FLAG89cd1677f [2019-10-14 23:54:43,559 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:54:43,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label45.c [2019-10-14 23:54:43,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7541ec644/9c9f48acbf3a48afb964ce511959e615/FLAG89cd1677f [2019-10-14 23:54:43,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7541ec644/9c9f48acbf3a48afb964ce511959e615 [2019-10-14 23:54:43,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:54:43,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:54:43,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:43,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:54:43,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:54:43,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:43" (1/1) ... [2019-10-14 23:54:43,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52da3fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:43, skipping insertion in model container [2019-10-14 23:54:43,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:43" (1/1) ... [2019-10-14 23:54:43,856 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:54:43,915 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:54:44,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:44,479 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:54:44,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:44,600 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:54:44,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44 WrapperNode [2019-10-14 23:54:44,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:44,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:54:44,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:54:44,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:54:44,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:54:44,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:54:44,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:54:44,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:54:44,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (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 23:54:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:54:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:54:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:54:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:54:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:54:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:54:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:54:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:54:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:54:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:54:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:54:45,924 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:54:45,924 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:54:45,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:45 BoogieIcfgContainer [2019-10-14 23:54:45,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:54:45,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:54:45,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:54:45,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:54:45,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:54:43" (1/3) ... [2019-10-14 23:54:45,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fee67c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:45, skipping insertion in model container [2019-10-14 23:54:45,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44" (2/3) ... [2019-10-14 23:54:45,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fee67c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:45, skipping insertion in model container [2019-10-14 23:54:45,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:45" (3/3) ... [2019-10-14 23:54:45,947 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2019-10-14 23:54:45,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:54:45,970 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:54:45,982 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:54:46,015 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:54:46,015 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:54:46,015 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:54:46,015 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:54:46,016 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:54:46,016 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:54:46,016 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:54:46,016 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:54:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:54:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:54:46,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:46,055 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] [2019-10-14 23:54:46,057 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:46,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash 700982975, now seen corresponding path program 1 times [2019-10-14 23:54:46,073 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:46,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902685648] [2019-10-14 23:54:46,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:46,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:46,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:46,592 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 23:54:46,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902685648] [2019-10-14 23:54:46,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:46,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:54:46,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828025129] [2019-10-14 23:54:46,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:54:46,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:46,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:54:46,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:46,620 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:54:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:47,519 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:54:47,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:54:47,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-14 23:54:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:47,551 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:54:47,552 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:54:47,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 23:54:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:54:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:54:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:54:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-10-14 23:54:47,676 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 123 [2019-10-14 23:54:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:47,682 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-10-14 23:54:47,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:54:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-10-14 23:54:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 23:54:47,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:47,688 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:54:47,689 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash 538208968, now seen corresponding path program 1 times [2019-10-14 23:54:47,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:47,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326792001] [2019-10-14 23:54:47,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:47,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:47,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:47,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326792001] [2019-10-14 23:54:47,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:47,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:54:47,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518035695] [2019-10-14 23:54:47,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:54:47,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:47,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:54:47,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:54:47,840 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-10-14 23:54:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:48,622 INFO L93 Difference]: Finished difference Result 840 states and 1222 transitions. [2019-10-14 23:54:48,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:54:48,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-14 23:54:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:48,630 INFO L225 Difference]: With dead ends: 840 [2019-10-14 23:54:48,631 INFO L226 Difference]: Without dead ends: 568 [2019-10-14 23:54:48,632 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 23:54:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-14 23:54:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-10-14 23:54:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-14 23:54:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-10-14 23:54:48,669 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 133 [2019-10-14 23:54:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:48,670 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-10-14 23:54:48,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:54:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-10-14 23:54:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-14 23:54:48,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:48,675 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:54:48,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 129203270, now seen corresponding path program 1 times [2019-10-14 23:54:48,676 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:48,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555195928] [2019-10-14 23:54:48,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:48,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:48,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:49,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555195928] [2019-10-14 23:54:49,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:49,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:54:49,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533163939] [2019-10-14 23:54:49,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:54:49,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:54:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:54:49,002 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 5 states. [2019-10-14 23:54:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:49,720 INFO L93 Difference]: Finished difference Result 1205 states and 1730 transitions. [2019-10-14 23:54:49,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:54:49,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-10-14 23:54:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:49,726 INFO L225 Difference]: With dead ends: 1205 [2019-10-14 23:54:49,726 INFO L226 Difference]: Without dead ends: 554 [2019-10-14 23:54:49,728 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:54:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-10-14 23:54:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-10-14 23:54:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-14 23:54:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 712 transitions. [2019-10-14 23:54:49,786 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 712 transitions. Word has length 134 [2019-10-14 23:54:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:49,787 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 712 transitions. [2019-10-14 23:54:49,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:54:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 712 transitions. [2019-10-14 23:54:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-14 23:54:49,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:49,791 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] [2019-10-14 23:54:49,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1311022732, now seen corresponding path program 1 times [2019-10-14 23:54:49,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:49,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512005279] [2019-10-14 23:54:49,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:49,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:49,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:50,135 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 23:54:50,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512005279] [2019-10-14 23:54:50,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:50,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:54:50,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486226669] [2019-10-14 23:54:50,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:54:50,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:54:50,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:54:50,138 INFO L87 Difference]: Start difference. First operand 554 states and 712 transitions. Second operand 5 states. [2019-10-14 23:54:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:50,709 INFO L93 Difference]: Finished difference Result 1184 states and 1552 transitions. [2019-10-14 23:54:50,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:54:50,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-10-14 23:54:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:50,713 INFO L225 Difference]: With dead ends: 1184 [2019-10-14 23:54:50,713 INFO L226 Difference]: Without dead ends: 554 [2019-10-14 23:54:50,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:54:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-10-14 23:54:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-10-14 23:54:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-14 23:54:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 708 transitions. [2019-10-14 23:54:50,739 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 708 transitions. Word has length 135 [2019-10-14 23:54:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:50,740 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 708 transitions. [2019-10-14 23:54:50,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:54:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 708 transitions. [2019-10-14 23:54:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:54:50,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:50,743 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:54:50,744 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash -663161394, now seen corresponding path program 1 times [2019-10-14 23:54:50,744 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:50,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312225069] [2019-10-14 23:54:50,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:50,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:50,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:50,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312225069] [2019-10-14 23:54:50,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:50,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:54:50,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768285074] [2019-10-14 23:54:50,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:54:50,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:50,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:54:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:50,883 INFO L87 Difference]: Start difference. First operand 554 states and 708 transitions. Second operand 3 states. [2019-10-14 23:54:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:51,315 INFO L93 Difference]: Finished difference Result 1509 states and 1954 transitions. [2019-10-14 23:54:51,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:54:51,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-14 23:54:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:51,322 INFO L225 Difference]: With dead ends: 1509 [2019-10-14 23:54:51,322 INFO L226 Difference]: Without dead ends: 961 [2019-10-14 23:54:51,324 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 23:54:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-14 23:54:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2019-10-14 23:54:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-14 23:54:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1180 transitions. [2019-10-14 23:54:51,359 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1180 transitions. Word has length 138 [2019-10-14 23:54:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:51,359 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1180 transitions. [2019-10-14 23:54:51,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:54:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1180 transitions. [2019-10-14 23:54:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-14 23:54:51,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:51,364 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:51,365 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1614473983, now seen corresponding path program 1 times [2019-10-14 23:54:51,366 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:51,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309051739] [2019-10-14 23:54:51,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:51,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:51,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:51,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309051739] [2019-10-14 23:54:51,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071673328] [2019-10-14 23:54:51,528 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 23:54:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:51,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:54:51,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:54:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:54:51,761 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:54:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:54:51,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [795598205] [2019-10-14 23:54:51,906 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 170 [2019-10-14 23:54:51,976 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:54:51,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)