/usr/bin/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/Problem14_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:50:22,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:50:22,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:50:22,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:50:22,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:50:22,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:50:22,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:50:22,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:50:22,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:50:22,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:50:22,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:50:22,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:50:22,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:50:22,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:50:22,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:50:22,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:50:22,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:50:22,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:50:22,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:50:22,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:50:22,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:50:22,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:50:22,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:50:22,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:50:22,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:50:22,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:50:22,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:50:22,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:50:22,798 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 [2019-11-06 22:50:22,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:50:22,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:50:22,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:50:22,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:50:22,829 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:50:22,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:50:22,829 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:50:22,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:50:22,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:50:22,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:50:22,831 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:50:22,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:50:22,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:50:22,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:50:22,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:50:22,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:50:22,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:50:22,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:50:22,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:50:22,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:50:22,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:50:22,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:50:22,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:50:22,833 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 [2019-11-06 22:50:23,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:50:23,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:50:23,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:50:23,163 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:50:23,163 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:50:23,164 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label16.c [2019-11-06 22:50:23,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2307b026e/e3d33a6afc6b4503a0f504f69d87ebd4/FLAG5d5a6c53c [2019-11-06 22:50:23,843 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:50:23,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label16.c [2019-11-06 22:50:23,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2307b026e/e3d33a6afc6b4503a0f504f69d87ebd4/FLAG5d5a6c53c [2019-11-06 22:50:24,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2307b026e/e3d33a6afc6b4503a0f504f69d87ebd4 [2019-11-06 22:50:24,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:50:24,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:50:24,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:50:24,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:50:24,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:50:24,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:24" (1/1) ... [2019-11-06 22:50:24,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f087c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:24, skipping insertion in model container [2019-11-06 22:50:24,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:24" (1/1) ... [2019-11-06 22:50:24,145 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:50:24,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:50:24,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:50:25,003 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:50:25,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:50:25,176 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:50:25,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25 WrapperNode [2019-11-06 22:50:25,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:50:25,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:50:25,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:50:25,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:50:25,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2019-11-06 22:50:25,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:50:25,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:50:25,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:50:25,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:50:25,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (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 [2019-11-06 22:50:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:50:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:50:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:50:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:50:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:50:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:50:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:50:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:50:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:50:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:50:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:50:26,882 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:50:26,882 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:50:26,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:26 BoogieIcfgContainer [2019-11-06 22:50:26,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:50:26,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:50:26,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:50:26,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:50:26,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:24" (1/3) ... [2019-11-06 22:50:26,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268ac7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:26, skipping insertion in model container [2019-11-06 22:50:26,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (2/3) ... [2019-11-06 22:50:26,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268ac7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:26, skipping insertion in model container [2019-11-06 22:50:26,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:26" (3/3) ... [2019-11-06 22:50:26,901 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label16.c [2019-11-06 22:50:26,913 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:50:26,922 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:50:26,934 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:50:26,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:50:26,962 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:50:26,962 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:50:26,962 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:50:26,962 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:50:26,963 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:50:26,963 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:50:26,963 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:50:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-11-06 22:50:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:50:26,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:50:26,995 INFO L410 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] [2019-11-06 22:50:26,997 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:50:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:50:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash 27238371, now seen corresponding path program 1 times [2019-11-06 22:50:27,011 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:50:27,012 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208622098] [2019-11-06 22:50:27,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:50:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:50:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:27,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208622098] [2019-11-06 22:50:27,335 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:50:27,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:50:27,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874307819] [2019-11-06 22:50:27,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:50:27,344 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:50:27,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:50:27,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:50:27,361 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2019-11-06 22:50:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:50:28,600 INFO L93 Difference]: Finished difference Result 688 states and 1223 transitions. [2019-11-06 22:50:28,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:50:28,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:50:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:50:28,619 INFO L225 Difference]: With dead ends: 688 [2019-11-06 22:50:28,619 INFO L226 Difference]: Without dead ends: 372 [2019-11-06 22:50:28,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:50:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-11-06 22:50:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2019-11-06 22:50:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-11-06 22:50:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 596 transitions. [2019-11-06 22:50:28,726 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 596 transitions. Word has length 52 [2019-11-06 22:50:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:50:28,727 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 596 transitions. [2019-11-06 22:50:28,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:50:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 596 transitions. [2019-11-06 22:50:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:50:28,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:50:28,734 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:50:28,734 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:50:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:50:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash -831044326, now seen corresponding path program 1 times [2019-11-06 22:50:28,735 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:50:28,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585520283] [2019-11-06 22:50:28,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:50:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:50:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:28,903 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585520283] [2019-11-06 22:50:28,903 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:50:28,903 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:50:28,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403597335] [2019-11-06 22:50:28,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:50:28,907 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:50:28,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:50:28,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:50:28,908 INFO L87 Difference]: Start difference. First operand 372 states and 596 transitions. Second operand 5 states. [2019-11-06 22:50:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:50:30,281 INFO L93 Difference]: Finished difference Result 940 states and 1514 transitions. [2019-11-06 22:50:30,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:50:30,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-11-06 22:50:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:50:30,286 INFO L225 Difference]: With dead ends: 940 [2019-11-06 22:50:30,287 INFO L226 Difference]: Without dead ends: 574 [2019-11-06 22:50:30,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:50:30,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-11-06 22:50:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 564. [2019-11-06 22:50:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-06 22:50:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 831 transitions. [2019-11-06 22:50:30,330 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 831 transitions. Word has length 128 [2019-11-06 22:50:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:50:30,331 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 831 transitions. [2019-11-06 22:50:30,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:50:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 831 transitions. [2019-11-06 22:50:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-06 22:50:30,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:50:30,347 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:50:30,347 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:50:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:50:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1296359578, now seen corresponding path program 1 times [2019-11-06 22:50:30,348 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:50:30,348 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584112708] [2019-11-06 22:50:30,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:50:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:50:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:30,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584112708] [2019-11-06 22:50:30,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:50:30,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:50:30,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437705261] [2019-11-06 22:50:30,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:50:30,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:50:30,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:50:30,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:50:30,759 INFO L87 Difference]: Start difference. First operand 564 states and 831 transitions. Second operand 6 states. [2019-11-06 22:50:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:50:32,077 INFO L93 Difference]: Finished difference Result 1526 states and 2378 transitions. [2019-11-06 22:50:32,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:50:32,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2019-11-06 22:50:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:50:32,085 INFO L225 Difference]: With dead ends: 1526 [2019-11-06 22:50:32,085 INFO L226 Difference]: Without dead ends: 968 [2019-11-06 22:50:32,087 INFO L630 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 [2019-11-06 22:50:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2019-11-06 22:50:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 942. [2019-11-06 22:50:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2019-11-06 22:50:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1352 transitions. [2019-11-06 22:50:32,127 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1352 transitions. Word has length 192 [2019-11-06 22:50:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:50:32,128 INFO L462 AbstractCegarLoop]: Abstraction has 942 states and 1352 transitions. [2019-11-06 22:50:32,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:50:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1352 transitions. [2019-11-06 22:50:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-06 22:50:32,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:50:32,137 INFO L410 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:50:32,137 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:50:32,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:50:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1245763624, now seen corresponding path program 1 times [2019-11-06 22:50:32,138 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:50:32,138 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804775694] [2019-11-06 22:50:32,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:50:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:50:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:32,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804775694] [2019-11-06 22:50:32,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168700443] [2019-11-06 22:50:32,358 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 [2019-11-06 22:50:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:50:32,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:50:32,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:50:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:32,661 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:50:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:50:32,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1159040253] [2019-11-06 22:50:32,811 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 212 [2019-11-06 22:50:32,880 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:50:32,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:50:36,706 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:50:36,708 INFO L272 AbstractInterpreter]: Visited 88 different actions 88 times. Never merged. Never widened. Performed 215 root evaluator evaluations with a maximum evaluation depth of 13. Performed 215 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-11-06 22:50:36,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:50:36,713 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:50:40,131 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 78.23% of their original sizes. [2019-11-06 22:50:40,131 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:50:40,213 INFO L553 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2019-11-06 22:50:40,213 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:50:40,214 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:50:40,214 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 5, 5] total 18 [2019-11-06 22:50:40,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920938739] [2019-11-06 22:50:40,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:50:40,216 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:50:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:50:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:50:40,217 INFO L87 Difference]: Start difference. First operand 942 states and 1352 transitions. Second operand 10 states. [2019-11-06 22:50:40,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:50:40,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:50:40,423 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 5425#true or 7121#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= |old(~a15~0)| 8) (= |old(~inputA~0)| 1) (= ~a15~0 8) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (= |old(~a21~0)| 7) (= (+ |old(~a12~0)| 49) 0) (<= main_~input~0 2147483647) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= |old(~inputC~0)| 3) (= (+ ~a12~0 49) 0) (= ~inputB~0 2) (= ~a24~0 1) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= ~a21~0 7) (= |old(~a24~0)| 1)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~a21~0 = [7;7]; old(~a21~0) = [7;7]; ~inputB~0 = [2;2]; old(~inputB~0) = [2;2]; ~inputC~0 = [3;3]; old(~inputC~0) = [3;3]; ~inputF~0 = [6;6]; old(~inputF~0) = [6;6]; ~a12~0 = [-49;-49]; old(~a12~0) = [-49;-49]; ~a15~0 = [8;8]; old(~a15~0) = [8;8]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a24~0 = [1;1]; old(~a24~0) = [1;1]; main_~output~0 = [-1;-1]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:50:40,432 INFO L168 Benchmark]: Toolchain (without parser) took 16309.66 ms. Allocated memory was 145.2 MB in the beginning and 931.1 MB in the end (delta: 785.9 MB). Free memory was 101.0 MB in the beginning and 458.1 MB in the end (delta: -357.1 MB). Peak memory consumption was 428.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,435 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1053.37 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.6 MB in the beginning and 161.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,438 INFO L168 Benchmark]: Boogie Preprocessor took 149.48 ms. Allocated memory is still 205.0 MB. Free memory was 161.6 MB in the beginning and 155.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,446 INFO L168 Benchmark]: RCFGBuilder took 1559.51 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 155.9 MB in the beginning and 150.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,447 INFO L168 Benchmark]: TraceAbstraction took 13541.11 ms. Allocated memory was 237.5 MB in the beginning and 931.1 MB in the end (delta: 693.6 MB). Free memory was 148.6 MB in the beginning and 458.1 MB in the end (delta: -309.5 MB). Peak memory consumption was 384.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:50:40,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1053.37 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.6 MB in the beginning and 161.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.48 ms. Allocated memory is still 205.0 MB. Free memory was 161.6 MB in the beginning and 155.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1559.51 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 155.9 MB in the beginning and 150.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13541.11 ms. Allocated memory was 237.5 MB in the beginning and 931.1 MB in the end (delta: 693.6 MB). Free memory was 148.6 MB in the beginning and 458.1 MB in the end (delta: -309.5 MB). Peak memory consumption was 384.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 5425#true or 7121#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= |old(~a15~0)| 8) (= |old(~inputA~0)| 1) (= ~a15~0 8) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (= |old(~a21~0)| 7) (= (+ |old(~a12~0)| 49) 0) (<= main_~input~0 2147483647) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= |old(~inputC~0)| 3) (= (+ ~a12~0 49) 0) (= ~inputB~0 2) (= ~a24~0 1) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= ~a21~0 7) (= |old(~a24~0)| 1)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~a21~0 = [7;7]; old(~a21~0) = [7;7]; ~inputB~0 = [2;2]; old(~inputB~0) = [2;2]; ~inputC~0 = [3;3]; old(~inputC~0) = [3;3]; ~inputF~0 = [6;6]; old(~inputF~0) = [6;6]; ~a12~0 = [-49;-49]; old(~a12~0) = [-49;-49]; ~a15~0 = [8;8]; old(~a15~0) = [8;8]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a24~0 = [1;1]; old(~a24~0) = [1;1]; main_~output~0 = [-1;-1]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 5425#true or 7121#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= |old(~a15~0)| 8) (= |old(~inputA~0)| 1) (= ~a15~0 8) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (= |old(~a21~0)| 7) (= (+ |old(~a12~0)| 49) 0) (<= main_~input~0 2147483647) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= |old(~inputC~0)| 3) (= (+ ~a12~0 49) 0) (= ~inputB~0 2) (= ~a24~0 1) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= ~a21~0 7) (= |old(~a24~0)| 1)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~a21~0 = [7;7]; old(~a21~0) = [7;7]; ~inputB~0 = [2;2]; old(~inputB~0) = [2;2]; ~inputC~0 = [3;3]; old(~inputC~0) = [3;3]; ~inputF~0 = [6;6]; old(~inputF~0) = [6;6]; ~a12~0 = [-49;-49]; old(~a12~0) = [-49;-49]; ~a15~0 = [8;8]; old(~a15~0) = [8;8]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a24~0 = [1;1]; old(~a24~0) = [1;1]; main_~output~0 = [-1;-1]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...