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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:53:03,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:53:03,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:53:03,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:53:03,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:53:03,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:53:03,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:53:03,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:53:03,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:53:03,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:53:03,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:53:03,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:53:03,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:53:03,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:53:03,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:53:03,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:53:03,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:53:03,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:53:03,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:53:03,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:53:03,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:53:03,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:53:03,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:53:03,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:53:03,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:53:03,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:53:03,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:53:03,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:53:03,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:53:03,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:53:03,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:53:03,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:53:03,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:53:03,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:53:03,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:53:03,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:53:03,969 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 23:53:03,992 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:53:03,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:53:03,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:53:03,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:53:03,996 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:53:03,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:53:03,996 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:53:03,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:53:03,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:53:03,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:53:03,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:53:03,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:53:03,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:53:03,999 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:53:03,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:53:03,999 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:53:03,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:53:04,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:53:04,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:53:04,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:53:04,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:53:04,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:53:04,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:53:04,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:53:04,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:53:04,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:53:04,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:53:04,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:53:04,002 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 23:53:04,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:53:04,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:53:04,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:53:04,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:53:04,347 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:53:04,348 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2019-10-14 23:53:04,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bbc5380/aa0af36f89a94c91a3d57a1a3982b9ab/FLAG2f11f674a [2019-10-14 23:53:05,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:53:05,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2019-10-14 23:53:05,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bbc5380/aa0af36f89a94c91a3d57a1a3982b9ab/FLAG2f11f674a [2019-10-14 23:53:05,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bbc5380/aa0af36f89a94c91a3d57a1a3982b9ab [2019-10-14 23:53:05,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:53:05,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:53:05,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:05,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:53:05,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:53:05,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b500255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05, skipping insertion in model container [2019-10-14 23:53:05,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:05" (1/1) ... [2019-10-14 23:53:05,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:53:05,281 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:53:05,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:05,840 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:53:06,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:53:06,091 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:53:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06 WrapperNode [2019-10-14 23:53:06,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:53:06,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:53:06,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:53:06,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:53:06,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... [2019-10-14 23:53:06,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:53:06,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:53:06,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:53:06,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:53:06,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:53:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:53:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:53:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:53:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:53:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:53:07,530 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:53:07,531 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:53:07,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:07 BoogieIcfgContainer [2019-10-14 23:53:07,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:53:07,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:53:07,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:53:07,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:53:07,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:05" (1/3) ... [2019-10-14 23:53:07,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22201d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:07, skipping insertion in model container [2019-10-14 23:53:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:06" (2/3) ... [2019-10-14 23:53:07,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22201d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:07, skipping insertion in model container [2019-10-14 23:53:07,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:07" (3/3) ... [2019-10-14 23:53:07,554 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2019-10-14 23:53:07,573 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:53:07,584 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:53:07,599 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:53:07,637 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:53:07,637 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:53:07,637 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:53:07,638 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:53:07,638 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:53:07,638 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:53:07,638 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:53:07,638 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:53:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:53:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 23:53:07,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:07,695 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] [2019-10-14 23:53:07,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1377016033, now seen corresponding path program 1 times [2019-10-14 23:53:07,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:07,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364050355] [2019-10-14 23:53:07,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:07,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:07,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:08,257 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 23:53:08,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364050355] [2019-10-14 23:53:08,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:08,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:53:08,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30429226] [2019-10-14 23:53:08,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:53:08,267 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:53:08,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:53:08,286 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:53:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:09,197 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:53:09,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:09,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2019-10-14 23:53:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:09,232 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:53:09,232 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:53:09,244 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 23:53:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:53:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:53:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:53:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-10-14 23:53:09,354 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 115 [2019-10-14 23:53:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:09,356 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-10-14 23:53:09,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:53:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-10-14 23:53:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:53:09,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:09,370 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] [2019-10-14 23:53:09,370 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:09,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1300380632, now seen corresponding path program 1 times [2019-10-14 23:53:09,372 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:09,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823181844] [2019-10-14 23:53:09,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:09,373 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:09,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:09,532 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 23:53:09,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823181844] [2019-10-14 23:53:09,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:09,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:53:09,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692998742] [2019-10-14 23:53:09,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:53:09,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:53:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:53:09,537 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-10-14 23:53:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:10,390 INFO L93 Difference]: Finished difference Result 703 states and 1026 transitions. [2019-10-14 23:53:10,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:53:10,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-10-14 23:53:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:10,396 INFO L225 Difference]: With dead ends: 703 [2019-10-14 23:53:10,396 INFO L226 Difference]: Without dead ends: 431 [2019-10-14 23:53:10,398 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 23:53:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-14 23:53:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-10-14 23:53:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-14 23:53:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2019-10-14 23:53:10,440 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 125 [2019-10-14 23:53:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:10,441 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2019-10-14 23:53:10,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:53:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2019-10-14 23:53:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:53:10,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:10,444 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] [2019-10-14 23:53:10,444 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 860697510, now seen corresponding path program 1 times [2019-10-14 23:53:10,445 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:10,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757467756] [2019-10-14 23:53:10,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:10,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:10,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:10,805 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 23:53:10,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757467756] [2019-10-14 23:53:10,806 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:10,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:53:10,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810807292] [2019-10-14 23:53:10,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:53:10,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:53:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:53:10,808 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand 5 states. [2019-10-14 23:53:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:11,526 INFO L93 Difference]: Finished difference Result 933 states and 1337 transitions. [2019-10-14 23:53:11,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:53:11,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-14 23:53:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:11,532 INFO L225 Difference]: With dead ends: 933 [2019-10-14 23:53:11,533 INFO L226 Difference]: Without dead ends: 417 [2019-10-14 23:53:11,534 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 23:53:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-10-14 23:53:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2019-10-14 23:53:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-14 23:53:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 550 transitions. [2019-10-14 23:53:11,551 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 550 transitions. Word has length 126 [2019-10-14 23:53:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:11,551 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 550 transitions. [2019-10-14 23:53:11,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:53:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 550 transitions. [2019-10-14 23:53:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:53:11,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:11,554 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] [2019-10-14 23:53:11,554 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:11,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1706034196, now seen corresponding path program 1 times [2019-10-14 23:53:11,556 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:11,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45005718] [2019-10-14 23:53:11,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:11,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:11,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:11,876 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 23:53:11,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45005718] [2019-10-14 23:53:11,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:11,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:53:11,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947361992] [2019-10-14 23:53:11,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:53:11,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:53:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:53:11,879 INFO L87 Difference]: Start difference. First operand 417 states and 550 transitions. Second operand 5 states. [2019-10-14 23:53:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:12,487 INFO L93 Difference]: Finished difference Result 912 states and 1228 transitions. [2019-10-14 23:53:12,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:53:12,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-10-14 23:53:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:12,496 INFO L225 Difference]: With dead ends: 912 [2019-10-14 23:53:12,496 INFO L226 Difference]: Without dead ends: 417 [2019-10-14 23:53:12,498 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 23:53:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-10-14 23:53:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2019-10-14 23:53:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-14 23:53:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 547 transitions. [2019-10-14 23:53:12,513 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 547 transitions. Word has length 127 [2019-10-14 23:53:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:12,514 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 547 transitions. [2019-10-14 23:53:12,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:53:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 547 transitions. [2019-10-14 23:53:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-14 23:53:12,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:12,517 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] [2019-10-14 23:53:12,517 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash 508544498, now seen corresponding path program 1 times [2019-10-14 23:53:12,518 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:12,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143601079] [2019-10-14 23:53:12,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:12,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:12,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:12,645 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 23:53:12,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143601079] [2019-10-14 23:53:12,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:12,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:53:12,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47979987] [2019-10-14 23:53:12,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:53:12,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:53:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:53:12,650 INFO L87 Difference]: Start difference. First operand 417 states and 547 transitions. Second operand 3 states. [2019-10-14 23:53:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:13,151 INFO L93 Difference]: Finished difference Result 1237 states and 1661 transitions. [2019-10-14 23:53:13,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:13,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-10-14 23:53:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:13,158 INFO L225 Difference]: With dead ends: 1237 [2019-10-14 23:53:13,158 INFO L226 Difference]: Without dead ends: 826 [2019-10-14 23:53:13,160 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 23:53:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2019-10-14 23:53:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2019-10-14 23:53:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2019-10-14 23:53:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1069 transitions. [2019-10-14 23:53:13,190 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1069 transitions. Word has length 132 [2019-10-14 23:53:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:13,191 INFO L462 AbstractCegarLoop]: Abstraction has 826 states and 1069 transitions. [2019-10-14 23:53:13,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:53:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1069 transitions. [2019-10-14 23:53:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 23:53:13,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:13,195 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:13,195 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash -486972616, now seen corresponding path program 1 times [2019-10-14 23:53:13,196 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:13,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889022553] [2019-10-14 23:53:13,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:13,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:13,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:13,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889022553] [2019-10-14 23:53:13,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:53:13,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:53:13,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540031398] [2019-10-14 23:53:13,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:53:13,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:13,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:53:13,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:53:13,284 INFO L87 Difference]: Start difference. First operand 826 states and 1069 transitions. Second operand 6 states. [2019-10-14 23:53:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:14,047 INFO L93 Difference]: Finished difference Result 2375 states and 3230 transitions. [2019-10-14 23:53:14,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:53:14,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-14 23:53:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:14,059 INFO L225 Difference]: With dead ends: 2375 [2019-10-14 23:53:14,059 INFO L226 Difference]: Without dead ends: 1555 [2019-10-14 23:53:14,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:53:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-14 23:53:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1531. [2019-10-14 23:53:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2019-10-14 23:53:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1927 transitions. [2019-10-14 23:53:14,127 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1927 transitions. Word has length 133 [2019-10-14 23:53:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:14,127 INFO L462 AbstractCegarLoop]: Abstraction has 1531 states and 1927 transitions. [2019-10-14 23:53:14,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:53:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1927 transitions. [2019-10-14 23:53:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:53:14,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:14,133 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-14 23:53:14,133 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1684411513, now seen corresponding path program 1 times [2019-10-14 23:53:14,134 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:14,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249883190] [2019-10-14 23:53:14,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:14,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:14,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:14,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249883190] [2019-10-14 23:53:14,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617035047] [2019-10-14 23:53:14,229 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 23:53:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:14,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:53:14,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:53:14,441 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:53:14,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1457581272] [2019-10-14 23:53:14,575 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 149 [2019-10-14 23:53:14,634 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:53:14,635 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)