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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:58:07,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:58:07,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:58:07,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:58:07,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:58:07,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:58:07,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:58:07,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:58:07,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:58:07,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:58:07,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:58:07,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:58:07,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:58:07,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:58:07,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:58:07,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:58:07,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:58:07,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:58:07,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:58:07,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:58:07,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:58:07,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:58:07,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:58:07,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:58:07,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:58:07,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:58:07,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:58:07,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:58:07,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:58:07,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:58:07,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:58:07,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:58:07,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:58:07,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:58:07,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:58:07,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:58:07,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:58:07,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:58:07,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:58:07,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:58:07,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:58:07,402 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 23:58:07,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:58:07,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:58:07,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:58:07,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:58:07,418 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:58:07,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:58:07,418 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:58:07,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:58:07,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:58:07,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:58:07,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:58:07,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:58:07,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:58:07,419 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:58:07,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:58:07,420 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:58:07,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:58:07,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:58:07,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:58:07,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:58:07,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:58:07,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:58:07,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:58:07,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:58:07,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:58:07,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:58:07,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:58:07,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:58:07,423 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 23:58:07,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:58:07,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:58:07,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:58:07,726 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:58:07,727 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:58:07,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2019-10-14 23:58:07,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b86a4eb7/49c27640f37646748031d6f7f4f8a685/FLAG16df9d950 [2019-10-14 23:58:08,423 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:58:08,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2019-10-14 23:58:08,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b86a4eb7/49c27640f37646748031d6f7f4f8a685/FLAG16df9d950 [2019-10-14 23:58:08,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b86a4eb7/49c27640f37646748031d6f7f4f8a685 [2019-10-14 23:58:08,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:58:08,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:58:08,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:58:08,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:58:08,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:58:08,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:08" (1/1) ... [2019-10-14 23:58:08,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3feed334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:08, skipping insertion in model container [2019-10-14 23:58:08,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:08" (1/1) ... [2019-10-14 23:58:08,703 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:58:08,771 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:58:09,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:58:09,306 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:58:09,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:58:09,474 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:58:09,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09 WrapperNode [2019-10-14 23:58:09,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:58:09,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:58:09,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:58:09,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:58:09,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (1/1) ... [2019-10-14 23:58:09,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:58:09,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:58:09,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:58:09,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:58:09,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (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 23:58:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:58:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:58:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:58:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:58:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:58:10,770 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:58:10,770 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:58:10,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:10 BoogieIcfgContainer [2019-10-14 23:58:10,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:58:10,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:58:10,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:58:10,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:58:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:58:08" (1/3) ... [2019-10-14 23:58:10,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22055e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:10, skipping insertion in model container [2019-10-14 23:58:10,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:09" (2/3) ... [2019-10-14 23:58:10,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22055e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:10, skipping insertion in model container [2019-10-14 23:58:10,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:10" (3/3) ... [2019-10-14 23:58:10,780 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2019-10-14 23:58:10,790 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:58:10,799 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:58:10,812 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:58:10,842 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:58:10,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:58:10,843 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:58:10,843 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:58:10,843 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:58:10,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:58:10,844 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:58:10,844 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:58:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-14 23:58:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-14 23:58:10,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:10,884 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] [2019-10-14 23:58:10,886 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash -667012847, now seen corresponding path program 1 times [2019-10-14 23:58:10,902 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:10,902 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478831743] [2019-10-14 23:58:10,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:10,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:10,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:11,337 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 23:58:11,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478831743] [2019-10-14 23:58:11,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:11,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:58:11,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54532170] [2019-10-14 23:58:11,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:58:11,351 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:11,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:58:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:58:11,371 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-14 23:58:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:12,318 INFO L93 Difference]: Finished difference Result 618 states and 1058 transitions. [2019-10-14 23:58:12,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:58:12,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-10-14 23:58:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:12,350 INFO L225 Difference]: With dead ends: 618 [2019-10-14 23:58:12,350 INFO L226 Difference]: Without dead ends: 320 [2019-10-14 23:58:12,362 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 23:58:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-14 23:58:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2019-10-14 23:58:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-14 23:58:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 470 transitions. [2019-10-14 23:58:12,433 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 470 transitions. Word has length 97 [2019-10-14 23:58:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:12,434 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 470 transitions. [2019-10-14 23:58:12,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:58:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 470 transitions. [2019-10-14 23:58:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-14 23:58:12,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:12,441 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:58:12,441 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash -438524216, now seen corresponding path program 1 times [2019-10-14 23:58:12,442 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:12,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944790352] [2019-10-14 23:58:12,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:12,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:12,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:12,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944790352] [2019-10-14 23:58:12,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:12,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:58:12,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885481516] [2019-10-14 23:58:12,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:58:12,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:12,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:58:12,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:58:12,597 INFO L87 Difference]: Start difference. First operand 318 states and 470 transitions. Second operand 3 states. [2019-10-14 23:58:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:13,174 INFO L93 Difference]: Finished difference Result 920 states and 1379 transitions. [2019-10-14 23:58:13,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:58:13,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-14 23:58:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:13,181 INFO L225 Difference]: With dead ends: 920 [2019-10-14 23:58:13,181 INFO L226 Difference]: Without dead ends: 608 [2019-10-14 23:58:13,183 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 23:58:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-14 23:58:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-14 23:58:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-14 23:58:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 876 transitions. [2019-10-14 23:58:13,232 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 876 transitions. Word has length 110 [2019-10-14 23:58:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:13,233 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 876 transitions. [2019-10-14 23:58:13,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:58:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 876 transitions. [2019-10-14 23:58:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-14 23:58:13,245 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:13,245 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:13,246 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1696293539, now seen corresponding path program 1 times [2019-10-14 23:58:13,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:13,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890216709] [2019-10-14 23:58:13,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:13,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:13,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:13,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890216709] [2019-10-14 23:58:13,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909136331] [2019-10-14 23:58:13,545 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 23:58:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:13,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:58:13,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:58:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:13,781 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:58:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:13,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1325403257] [2019-10-14 23:58:13,968 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 183 [2019-10-14 23:58:14,057 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:58:14,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)