/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/Problem15_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:52:48,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:52:48,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:52:48,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:52:48,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:52:48,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:52:48,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:52:48,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:52:48,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:52:48,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:52:48,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:52:48,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:52:48,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:52:48,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:52:48,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:52:48,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:52:48,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:52:48,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:52:48,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:52:48,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:52:48,912 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 22:52:48,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:52:48,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:52:48,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:52:48,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:52:48,928 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:52:48,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:52:48,928 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:52:48,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:52:48,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:52:48,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:52:48,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:52:48,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:52:48,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:52:48,930 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:52:48,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:52:48,930 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:52:48,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:52:48,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:52:48,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:52:48,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:52:48,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:52:48,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:52:48,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:52:48,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:52:48,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:52:48,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:52:48,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:52:48,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:52:48,933 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 22:52:49,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:52:49,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:52:49,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:52:49,230 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:52:49,230 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:52:49,231 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-11-06 22:52:49,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb19f53a/58bb488e33464fe1958d99736e6cfca5/FLAG9c9a8d0af [2019-11-06 22:52:49,973 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:52:49,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-11-06 22:52:50,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb19f53a/58bb488e33464fe1958d99736e6cfca5/FLAG9c9a8d0af [2019-11-06 22:52:50,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb19f53a/58bb488e33464fe1958d99736e6cfca5 [2019-11-06 22:52:50,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:52:50,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:52:50,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:52:50,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:52:50,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:52:50,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:50" (1/1) ... [2019-11-06 22:52:50,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123ae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:50, skipping insertion in model container [2019-11-06 22:52:50,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:50" (1/1) ... [2019-11-06 22:52:50,152 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:52:50,242 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:52:51,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:52:51,076 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:52:51,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:52:51,630 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:52:51,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51 WrapperNode [2019-11-06 22:52:51,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:52:51,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:52:51,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:52:51,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:52:51,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (1/1) ... [2019-11-06 22:52:51,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:52:51,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:52:51,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:52:51,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:52:51,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (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 22:52:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:52:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:52:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:52:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:52:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:52:55,325 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:52:55,326 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:52:55,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:55 BoogieIcfgContainer [2019-11-06 22:52:55,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:52:55,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:52:55,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:52:55,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:52:55,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:52:50" (1/3) ... [2019-11-06 22:52:55,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55463abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:55, skipping insertion in model container [2019-11-06 22:52:55,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:51" (2/3) ... [2019-11-06 22:52:55,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55463abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:55, skipping insertion in model container [2019-11-06 22:52:55,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:55" (3/3) ... [2019-11-06 22:52:55,336 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2019-11-06 22:52:55,346 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:52:55,356 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:52:55,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:52:55,398 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:52:55,398 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:52:55,398 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:52:55,398 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:52:55,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:52:55,399 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:52:55,399 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:52:55,399 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:52:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-11-06 22:52:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 22:52:55,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:52:55,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:52:55,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:52:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:52:55,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1117771851, now seen corresponding path program 1 times [2019-11-06 22:52:55,454 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:52:55,455 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687425490] [2019-11-06 22:52:55,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:52:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:52:55,700 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 22:52:55,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687425490] [2019-11-06 22:52:55,701 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:52:55,702 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:52:55,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194702194] [2019-11-06 22:52:55,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:52:55,710 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:52:55,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:52:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:52:55,728 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-11-06 22:53:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:53:01,521 INFO L93 Difference]: Finished difference Result 1554 states and 2845 transitions. [2019-11-06 22:53:01,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:53:01,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-06 22:53:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:53:01,550 INFO L225 Difference]: With dead ends: 1554 [2019-11-06 22:53:01,551 INFO L226 Difference]: Without dead ends: 1036 [2019-11-06 22:53:01,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:53:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-11-06 22:53:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1013. [2019-11-06 22:53:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2019-11-06 22:53:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1638 transitions. [2019-11-06 22:53:01,676 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1638 transitions. Word has length 19 [2019-11-06 22:53:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:53:01,677 INFO L462 AbstractCegarLoop]: Abstraction has 1013 states and 1638 transitions. [2019-11-06 22:53:01,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:53:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1638 transitions. [2019-11-06 22:53:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-06 22:53:01,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:53:01,684 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:53:01,684 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:53:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:53:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2035291641, now seen corresponding path program 1 times [2019-11-06 22:53:01,687 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:53:01,687 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136501737] [2019-11-06 22:53:01,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:53:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:53:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:53:01,919 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136501737] [2019-11-06 22:53:01,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:53:01,919 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:53:01,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112797846] [2019-11-06 22:53:01,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:53:01,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:53:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:53:01,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:53:01,925 INFO L87 Difference]: Start difference. First operand 1013 states and 1638 transitions. Second operand 5 states. [2019-11-06 22:53:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:53:05,764 INFO L93 Difference]: Finished difference Result 3003 states and 4930 transitions. [2019-11-06 22:53:05,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:53:05,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2019-11-06 22:53:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:53:05,783 INFO L225 Difference]: With dead ends: 3003 [2019-11-06 22:53:05,783 INFO L226 Difference]: Without dead ends: 1996 [2019-11-06 22:53:05,788 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 22:53:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2019-11-06 22:53:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1958. [2019-11-06 22:53:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2019-11-06 22:53:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2746 transitions. [2019-11-06 22:53:05,885 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2746 transitions. Word has length 91 [2019-11-06 22:53:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:53:05,887 INFO L462 AbstractCegarLoop]: Abstraction has 1958 states and 2746 transitions. [2019-11-06 22:53:05,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:53:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2746 transitions. [2019-11-06 22:53:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-06 22:53:05,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:53:05,901 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:53:05,902 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:53:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:53:05,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1222387191, now seen corresponding path program 1 times [2019-11-06 22:53:05,902 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:53:05,903 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423461430] [2019-11-06 22:53:05,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:53:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:53:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:53:06,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423461430] [2019-11-06 22:53:06,176 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:53:06,176 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:53:06,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596806394] [2019-11-06 22:53:06,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:53:06,177 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:53:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:53:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:53:06,178 INFO L87 Difference]: Start difference. First operand 1958 states and 2746 transitions. Second operand 4 states. [2019-11-06 22:53:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:53:12,136 INFO L93 Difference]: Finished difference Result 7660 states and 10979 transitions. [2019-11-06 22:53:12,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:53:12,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-11-06 22:53:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:53:12,168 INFO L225 Difference]: With dead ends: 7660 [2019-11-06 22:53:12,168 INFO L226 Difference]: Without dead ends: 3839 [2019-11-06 22:53:12,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:53:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2019-11-06 22:53:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3839. [2019-11-06 22:53:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2019-11-06 22:53:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5043 transitions. [2019-11-06 22:53:12,329 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5043 transitions. Word has length 99 [2019-11-06 22:53:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:53:12,330 INFO L462 AbstractCegarLoop]: Abstraction has 3839 states and 5043 transitions. [2019-11-06 22:53:12,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:53:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5043 transitions. [2019-11-06 22:53:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 22:53:12,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:53:12,333 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:53:12,334 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:53:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:53:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash -23489459, now seen corresponding path program 1 times [2019-11-06 22:53:12,334 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:53:12,335 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438007189] [2019-11-06 22:53:12,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:53:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:53:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:53:12,535 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438007189] [2019-11-06 22:53:12,536 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353572160] [2019-11-06 22:53:12,536 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 22:53:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:53:12,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:53:12,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:53:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:53:12,760 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:53:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:53:12,903 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [882038818] [2019-11-06 22:53:12,911 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 172 [2019-11-06 22:53:12,963 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:53:12,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:53:14,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:53:14,782 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Performed 209 root evaluator evaluations with a maximum evaluation depth of 12. Performed 209 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Never found a fixpoint. Largest state had 24 variables. [2019-11-06 22:53:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:53:14,787 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:53:16,091 INFO L227 lantSequenceWeakener]: Weakened 152 states. On average, predicates are now at 77.49% of their original sizes. [2019-11-06 22:53:16,092 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:53:16,163 INFO L553 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2019-11-06 22:53:16,164 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:53:16,164 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:53:16,165 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 5, 5] total 20 [2019-11-06 22:53:16,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301000768] [2019-11-06 22:53:16,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:53:16,166 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:53:16,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:53:16,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:53:16,167 INFO L87 Difference]: Start difference. First operand 3839 states and 5043 transitions. Second operand 10 states. [2019-11-06 22:53:16,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:53:16,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:53:16,370 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: 19806#true or 21184#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= (+ ~a0~0 44) 0) (= |old(~inputA~0)| 1) (= |old(~a2~0)| 1) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (<= main_~input~0 2147483647) (= (+ |old(~a0~0)| 44) 0) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= ~a2~0 1) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= (+ ~a4~0 89) 0) (= |old(~inputC~0)| 3) (= ~inputB~0 2) (= (+ |old(~a29~0)| 127) 0) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= (+ |old(~a4~0)| 89) 0) (= (+ ~a29~0 127) 0)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~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]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a4~0 = [-89;-89]; old(~a4~0) = [-89;-89]; ~a2~0 = [1;1]; old(~a2~0) = [1;1]; ~a0~0 = [-44;-44]; old(~a0~0) = [-44;-44]; ~a29~0 = [-127;-127]; old(~a29~0) = [-127;-127]; 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 22:53:16,378 INFO L168 Benchmark]: Toolchain (without parser) took 26241.73 ms. Allocated memory was 144.2 MB in the beginning and 537.4 MB in the end (delta: 393.2 MB). Free memory was 95.1 MB in the beginning and 383.2 MB in the end (delta: -288.2 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,379 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1495.63 ms. Allocated memory was 144.2 MB in the beginning and 208.1 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 119.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,382 INFO L168 Benchmark]: Boogie Preprocessor took 211.63 ms. Allocated memory is still 208.1 MB. Free memory was 119.8 MB in the beginning and 107.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,387 INFO L168 Benchmark]: RCFGBuilder took 3483.27 ms. Allocated memory was 208.1 MB in the beginning and 261.6 MB in the end (delta: 53.5 MB). Free memory was 107.1 MB in the beginning and 204.0 MB in the end (delta: -96.9 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,388 INFO L168 Benchmark]: TraceAbstraction took 21046.87 ms. Allocated memory was 261.6 MB in the beginning and 537.4 MB in the end (delta: 275.8 MB). Free memory was 204.0 MB in the beginning and 383.2 MB in the end (delta: -179.2 MB). Peak memory consumption was 96.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:53:16,394 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1495.63 ms. Allocated memory was 144.2 MB in the beginning and 208.1 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 119.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.63 ms. Allocated memory is still 208.1 MB. Free memory was 119.8 MB in the beginning and 107.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3483.27 ms. Allocated memory was 208.1 MB in the beginning and 261.6 MB in the end (delta: 53.5 MB). Free memory was 107.1 MB in the beginning and 204.0 MB in the end (delta: -96.9 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21046.87 ms. Allocated memory was 261.6 MB in the beginning and 537.4 MB in the end (delta: 275.8 MB). Free memory was 204.0 MB in the beginning and 383.2 MB in the end (delta: -179.2 MB). Peak memory consumption was 96.5 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: 19806#true or 21184#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= (+ ~a0~0 44) 0) (= |old(~inputA~0)| 1) (= |old(~a2~0)| 1) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (<= main_~input~0 2147483647) (= (+ |old(~a0~0)| 44) 0) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= ~a2~0 1) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= (+ ~a4~0 89) 0) (= |old(~inputC~0)| 3) (= ~inputB~0 2) (= (+ |old(~a29~0)| 127) 0) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= (+ |old(~a4~0)| 89) 0) (= (+ ~a29~0 127) 0)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~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]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a4~0 = [-89;-89]; old(~a4~0) = [-89;-89]; ~a2~0 = [1;1]; old(~a2~0) = [1;1]; ~a0~0 = [-44;-44]; old(~a0~0) = [-44;-44]; ~a29~0 = [-127;-127]; old(~a29~0) = [-127;-127]; main_~output~0 = [-1;-1]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 19806#true or 21184#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= (+ ~a0~0 44) 0) (= |old(~inputA~0)| 1) (= |old(~a2~0)| 1) (= (+ main_~output~0 1) 0) (= ~inputD~0 4) (<= main_~input~0 2147483647) (= (+ |old(~a0~0)| 44) 0) (<= 0 (+ main_~input~0 2147483648)) (= |old(~inputE~0)| 5) (= ~a2~0 1) (= |old(~inputB~0)| 2) (= |old(~inputF~0)| 6) (= (+ ~a4~0 89) 0) (= |old(~inputC~0)| 3) (= ~inputB~0 2) (= (+ |old(~a29~0)| 127) 0) (= ~inputE~0 5) (= |old(~inputD~0)| 4) (= (+ |old(~a4~0)| 89) 0) (= (+ ~a29~0 127) 0)) ([#1{~inputA~0 = [1;1]; old(~inputA~0) = [1;1]; ~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]; ~inputD~0 = [4;4]; old(~inputD~0) = [4;4]; main_~input~0 = [-2147483648;2147483647]; ~inputE~0 = [5;5]; old(~inputE~0) = [5;5]; ~a4~0 = [-89;-89]; old(~a4~0) = [-89;-89]; ~a2~0 = [1;1]; old(~a2~0) = [1;1]; ~a0~0 = [-44;-44]; old(~a0~0) = [-44;-44]; ~a29~0 = [-127;-127]; old(~a29~0) = [-127;-127]; 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...