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/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:57:50,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:57:50,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:57:50,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:57:50,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:57:50,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:57:50,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:57:50,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:57:50,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:57:50,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:57:50,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:57:50,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:57:50,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:57:50,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:57:50,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:57:50,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:57:50,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:57:50,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:57:50,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:57:50,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:57:50,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:57:50,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:57:50,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:57:50,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:57:50,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:57:50,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:57:50,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:57:50,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:57:50,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:57:50,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:57:50,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:57:50,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:57:50,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:57:50,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:57:50,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:57:50,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:57:50,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:57:50,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:57:50,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:57:50,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:57:50,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:57:50,511 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 23:57:50,529 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:57:50,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:57:50,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:57:50,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:57:50,532 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:57:50,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:57:50,533 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:57:50,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:57:50,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:57:50,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:57:50,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:57:50,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:57:50,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:57:50,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:57:50,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:57:50,536 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:57:50,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:57:50,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:57:50,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:57:50,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:57:50,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:57:50,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:57:50,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:57:50,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:57:50,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:57:50,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:57:50,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:57:50,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:57:50,538 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 23:57:50,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:57:50,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:57:50,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:57:50,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:57:50,917 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:57:50,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-14 23:57:50,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c669eda48/b17c3e1b1abb447d8d2b28fbeae5b8f2/FLAG64d1477af [2019-10-14 23:57:51,604 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:57:51,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-14 23:57:51,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c669eda48/b17c3e1b1abb447d8d2b28fbeae5b8f2/FLAG64d1477af [2019-10-14 23:57:51,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c669eda48/b17c3e1b1abb447d8d2b28fbeae5b8f2 [2019-10-14 23:57:51,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:57:51,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:57:51,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:51,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:57:51,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:57:51,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:51" (1/1) ... [2019-10-14 23:57:51,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71163d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:51, skipping insertion in model container [2019-10-14 23:57:51,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:51" (1/1) ... [2019-10-14 23:57:51,945 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:57:52,002 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:57:52,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:52,645 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:57:52,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:52,780 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:57:52,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52 WrapperNode [2019-10-14 23:57:52,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:52,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:57:52,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:57:52,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:57:52,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (1/1) ... [2019-10-14 23:57:52,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:57:52,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:57:52,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:57:52,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:57:52,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (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 23:57:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:57:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:57:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:57:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:57:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:57:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:57:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:57:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:57:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:57:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:57:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:57:54,130 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:57:54,130 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:57:54,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:54 BoogieIcfgContainer [2019-10-14 23:57:54,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:57:54,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:57:54,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:57:54,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:57:54,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:51" (1/3) ... [2019-10-14 23:57:54,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79191352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:54, skipping insertion in model container [2019-10-14 23:57:54,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:52" (2/3) ... [2019-10-14 23:57:54,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79191352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:54, skipping insertion in model container [2019-10-14 23:57:54,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:54" (3/3) ... [2019-10-14 23:57:54,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2019-10-14 23:57:54,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:57:54,172 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:57:54,183 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:57:54,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:57:54,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:57:54,222 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:57:54,222 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:57:54,222 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:57:54,223 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:57:54,223 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:57:54,223 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:57:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-14 23:57:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-14 23:57:54,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:54,278 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] [2019-10-14 23:57:54,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:54,287 INFO L82 PathProgramCache]: Analyzing trace with hash -777531634, now seen corresponding path program 1 times [2019-10-14 23:57:54,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:54,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176591367] [2019-10-14 23:57:54,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:54,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:54,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:54,869 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 23:57:54,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176591367] [2019-10-14 23:57:54,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:54,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:57:54,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477829139] [2019-10-14 23:57:54,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:57:54,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:54,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:57:54,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:57:54,896 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 4 states. [2019-10-14 23:57:56,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:56,201 INFO L93 Difference]: Finished difference Result 770 states and 1353 transitions. [2019-10-14 23:57:56,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:56,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2019-10-14 23:57:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:56,224 INFO L225 Difference]: With dead ends: 770 [2019-10-14 23:57:56,224 INFO L226 Difference]: Without dead ends: 468 [2019-10-14 23:57:56,232 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:57:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-14 23:57:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2019-10-14 23:57:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-10-14 23:57:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 692 transitions. [2019-10-14 23:57:56,314 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 692 transitions. Word has length 110 [2019-10-14 23:57:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:56,317 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 692 transitions. [2019-10-14 23:57:56,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:57:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 692 transitions. [2019-10-14 23:57:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-14 23:57:56,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:56,323 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] [2019-10-14 23:57:56,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash 235870035, now seen corresponding path program 1 times [2019-10-14 23:57:56,324 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:56,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796848718] [2019-10-14 23:57:56,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:56,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:56,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:56,456 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 23:57:56,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796848718] [2019-10-14 23:57:56,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:56,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:57:56,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963075347] [2019-10-14 23:57:56,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:57:56,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:57:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:57:56,465 INFO L87 Difference]: Start difference. First operand 466 states and 692 transitions. Second operand 6 states. [2019-10-14 23:57:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:57,247 INFO L93 Difference]: Finished difference Result 1395 states and 2141 transitions. [2019-10-14 23:57:57,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:57:57,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-14 23:57:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:57,257 INFO L225 Difference]: With dead ends: 1395 [2019-10-14 23:57:57,257 INFO L226 Difference]: Without dead ends: 935 [2019-10-14 23:57:57,260 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 23:57:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2019-10-14 23:57:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 918. [2019-10-14 23:57:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2019-10-14 23:57:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1351 transitions. [2019-10-14 23:57:57,323 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1351 transitions. Word has length 130 [2019-10-14 23:57:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:57,324 INFO L462 AbstractCegarLoop]: Abstraction has 918 states and 1351 transitions. [2019-10-14 23:57:57,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:57:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1351 transitions. [2019-10-14 23:57:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-14 23:57:57,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:57,329 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:57:57,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1290355991, now seen corresponding path program 1 times [2019-10-14 23:57:57,330 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:57,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087630173] [2019-10-14 23:57:57,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:57,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:57,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:57,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087630173] [2019-10-14 23:57:57,473 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:57,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:57:57,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887447634] [2019-10-14 23:57:57,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:57:57,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:57,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:57:57,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:57:57,477 INFO L87 Difference]: Start difference. First operand 918 states and 1351 transitions. Second operand 3 states. [2019-10-14 23:57:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:58,028 INFO L93 Difference]: Finished difference Result 2411 states and 3645 transitions. [2019-10-14 23:57:58,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:57:58,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-10-14 23:57:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:58,040 INFO L225 Difference]: With dead ends: 2411 [2019-10-14 23:57:58,041 INFO L226 Difference]: Without dead ends: 1499 [2019-10-14 23:57:58,045 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:57:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2019-10-14 23:57:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1209. [2019-10-14 23:57:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2019-10-14 23:57:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1768 transitions. [2019-10-14 23:57:58,135 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1768 transitions. Word has length 131 [2019-10-14 23:57:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:58,135 INFO L462 AbstractCegarLoop]: Abstraction has 1209 states and 1768 transitions. [2019-10-14 23:57:58,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:57:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1768 transitions. [2019-10-14 23:57:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-14 23:57:58,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:58,141 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-14 23:57:58,142 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 741521436, now seen corresponding path program 1 times [2019-10-14 23:57:58,143 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:58,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551460017] [2019-10-14 23:57:58,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:58,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:58,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:58,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551460017] [2019-10-14 23:57:58,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283031476] [2019-10-14 23:57:58,324 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 23:57:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:58,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:57:58,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:57:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:58,628 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:57:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:58,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [873607653] [2019-10-14 23:57:58,856 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 184 [2019-10-14 23:57:58,907 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:57:58,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)