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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:09:25,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:09:25,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:09:25,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 07:09:25,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 07:09:25,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 07:09:25,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 07:09:25,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 07:09:25,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:09:25,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:09:25,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:09:25,594 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:09:25,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:09:25,595 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:09:25,595 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:09:25,595 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:09:25,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:09:25,596 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:09:25,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:09:25,597 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:09:25,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:09:25,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:09:25,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:09:25,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:09:25,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:09:25,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:09:25,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:09:25,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:09:25,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:09:25,599 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:09:25,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:09:25,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:09:25,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:09:25,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:09:25,600 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:09:25,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:09:25,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:09:25,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:09:25,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:09:25,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:09:25,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:09:25,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:09:25,644 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:09:25,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label59.c [2019-09-09 07:09:25,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aa4a9b57/d5217dd0af3b4c609b5f0c755c311b4c/FLAGa8e7b4b7e [2019-09-09 07:09:26,263 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:09:26,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label59.c [2019-09-09 07:09:26,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aa4a9b57/d5217dd0af3b4c609b5f0c755c311b4c/FLAGa8e7b4b7e [2019-09-09 07:09:26,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aa4a9b57/d5217dd0af3b4c609b5f0c755c311b4c [2019-09-09 07:09:26,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:09:26,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:09:26,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:09:26,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:09:26,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:09:26,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:09:26" (1/1) ... [2019-09-09 07:09:26,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b33bf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:26, skipping insertion in model container [2019-09-09 07:09:26,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:09:26" (1/1) ... [2019-09-09 07:09:26,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:09:26,649 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:09:27,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:09:27,181 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:09:27,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:09:27,336 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:09:27,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27 WrapperNode [2019-09-09 07:09:27,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:09:27,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:09:27,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:09:27,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:09:27,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (1/1) ... [2019-09-09 07:09:27,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:09:27,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:09:27,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:09:27,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:09:27,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (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 [2019-09-09 07:09:27,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:09:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:09:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:09:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:09:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:09:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:09:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:09:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:09:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:09:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:09:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:09:28,940 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:09:28,941 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:09:28,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:09:28 BoogieIcfgContainer [2019-09-09 07:09:28,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:09:28,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:09:28,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:09:28,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:09:28,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:09:26" (1/3) ... [2019-09-09 07:09:28,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13592061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:09:28, skipping insertion in model container [2019-09-09 07:09:28,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:09:27" (2/3) ... [2019-09-09 07:09:28,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13592061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:09:28, skipping insertion in model container [2019-09-09 07:09:28,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:09:28" (3/3) ... [2019-09-09 07:09:28,959 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label59.c [2019-09-09 07:09:28,973 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:09:28,985 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:09:29,004 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:09:29,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:09:29,043 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:09:29,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:09:29,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:09:29,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:09:29,044 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:09:29,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:09:29,045 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:09:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-09-09 07:09:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-09 07:09:29,104 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:09:29,106 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:09:29,108 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:09:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:09:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1246520719, now seen corresponding path program 1 times [2019-09-09 07:09:29,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:09:29,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:29,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:09:29,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:29,153 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:09:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:09:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:09:29,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:09:29,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:09:29,510 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:09:29,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:09:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:09:29,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:09:29,540 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-09-09 07:09:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:09:30,378 INFO L93 Difference]: Finished difference Result 394 states and 575 transitions. [2019-09-09 07:09:30,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:09:30,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-09-09 07:09:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:09:30,397 INFO L225 Difference]: With dead ends: 394 [2019-09-09 07:09:30,397 INFO L226 Difference]: Without dead ends: 326 [2019-09-09 07:09:30,399 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:09:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-09-09 07:09:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-09-09 07:09:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-09-09 07:09:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 467 transitions. [2019-09-09 07:09:30,467 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 467 transitions. Word has length 89 [2019-09-09 07:09:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:09:30,468 INFO L475 AbstractCegarLoop]: Abstraction has 321 states and 467 transitions. [2019-09-09 07:09:30,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:09:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 467 transitions. [2019-09-09 07:09:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-09 07:09:30,474 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:09:30,474 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 07:09:30,475 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:09:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:09:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 784816566, now seen corresponding path program 1 times [2019-09-09 07:09:30,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:09:30,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:30,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:09:30,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:30,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:09:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:09:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:09:30,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:09:30,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:09:30,651 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:09:30,653 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:09:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:09:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:09:30,654 INFO L87 Difference]: Start difference. First operand 321 states and 467 transitions. Second operand 3 states. [2019-09-09 07:09:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:09:31,237 INFO L93 Difference]: Finished difference Result 612 states and 797 transitions. [2019-09-09 07:09:31,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:09:31,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-09-09 07:09:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:09:31,251 INFO L225 Difference]: With dead ends: 612 [2019-09-09 07:09:31,251 INFO L226 Difference]: Without dead ends: 612 [2019-09-09 07:09:31,252 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:09:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-09-09 07:09:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-09-09 07:09:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-09-09 07:09:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 797 transitions. [2019-09-09 07:09:31,320 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 797 transitions. Word has length 97 [2019-09-09 07:09:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:09:31,321 INFO L475 AbstractCegarLoop]: Abstraction has 612 states and 797 transitions. [2019-09-09 07:09:31,321 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:09:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 797 transitions. [2019-09-09 07:09:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-09 07:09:31,331 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:09:31,332 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:09:31,332 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:09:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:09:31,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1229109032, now seen corresponding path program 1 times [2019-09-09 07:09:31,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:09:31,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:31,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:09:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:09:31,339 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:09:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:09:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:09:31,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:09:31,477 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:09:31,478 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-09 07:09:31,480 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [391], [393], [863], [867], [876], [880], [882], [887], [888], [889], [891], [892] [2019-09-09 07:09:31,523 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:09:31,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 07:15:46,871 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 07:15:46,874 INFO L272 AbstractInterpreter]: Visited 92 different actions 178 times. Merged at 4 different actions 4 times. Never widened. Performed 409 root evaluator evaluations with a maximum evaluation depth of 18. Performed 409 inverse root evaluator evaluations with a maximum inverse evaluation depth of 18. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2019-09-09 07:15:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:15:46,879 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 07:18:36,179 INFO L227 lantSequenceWeakener]: Weakened 99 states. On average, predicates are now at 80.24% of their original sizes. [2019-09-09 07:18:36,180 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 07:18:36,367 INFO L420 sIntCurrentIteration]: We unified 101 AI predicates to 101 [2019-09-09 07:18:36,367 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 07:18:36,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 07:18:36,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2019-09-09 07:18:36,368 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:18:36,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-09 07:18:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-09 07:18:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2019-09-09 07:18:36,370 INFO L87 Difference]: Start difference. First operand 612 states and 797 transitions. Second operand 16 states. [2019-09-09 07:18:59,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 07:18:59,631 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: There is no value of variable ~a25~0. at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalState.getValue(NonrelationalState.java:147) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.SingletonVariableExpressionEvaluator.lambda$0(SingletonVariableExpressionEvaluator.java:83) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.util.typeutils.TypeUtils.applyVariableFunctionPerType(TypeUtils.java:114) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.util.typeutils.TypeUtils.applyVariableFunction(TypeUtils.java:103) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.SingletonVariableExpressionEvaluator.evaluate(SingletonVariableExpressionEvaluator.java:89) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.SingletonVariableExpressionEvaluator.evaluate(SingletonVariableExpressionEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:90) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:90) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:88) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.Evaluator.evaluate(Evaluator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalEvaluator.evaluate(NonrelationalEvaluator.java:81) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:297) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:156) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:250) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) 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.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) 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:696) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:625) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:467) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) 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) [2019-09-09 07:18:59,638 INFO L168 Benchmark]: Toolchain (without parser) took 573057.26 ms. Allocated memory was 133.7 MB in the beginning and 339.7 MB in the end (delta: 206.0 MB). Free memory was 87.3 MB in the beginning and 62.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 230.8 MB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,639 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.55 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 160.4 MB in the end (delta: -73.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,641 INFO L168 Benchmark]: Boogie Preprocessor took 152.27 ms. Allocated memory is still 200.8 MB. Free memory was 160.4 MB in the beginning and 155.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,642 INFO L168 Benchmark]: RCFGBuilder took 1455.29 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 155.4 MB in the beginning and 172.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,643 INFO L168 Benchmark]: TraceAbstraction took 570689.06 ms. Allocated memory was 227.0 MB in the beginning and 339.7 MB in the end (delta: 112.7 MB). Free memory was 172.9 MB in the beginning and 62.5 MB in the end (delta: 110.4 MB). Peak memory consumption was 223.2 MB. Max. memory is 7.1 GB. [2019-09-09 07:18:59,647 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.55 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 160.4 MB in the end (delta: -73.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.27 ms. Allocated memory is still 200.8 MB. Free memory was 160.4 MB in the beginning and 155.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1455.29 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 155.4 MB in the beginning and 172.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 570689.06 ms. Allocated memory was 227.0 MB in the beginning and 339.7 MB in the end (delta: 112.7 MB). Free memory was 172.9 MB in the beginning and 62.5 MB in the end (delta: 110.4 MB). Peak memory consumption was 223.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: There is no value of variable ~a25~0. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: There is no value of variable ~a25~0.: de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalState.getValue(NonrelationalState.java:147) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...