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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:41:32,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:41:32,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:41:32,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:41:32,311 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 [2019-10-02 17:41:32,334 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:41:32,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:41:32,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:41:32,336 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:41:32,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:41:32,337 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:41:32,337 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:41:32,337 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:41:32,337 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:41:32,338 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:41:32,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:41:32,339 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:41:32,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:41:32,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:41:32,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:41:32,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:41:32,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:41:32,341 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:41:32,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:41:32,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:41:32,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:41:32,342 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:41:32,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:41:32,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:41:32,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:41:32,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:41:32,343 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:41:32,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:41:32,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:41:32,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:41:32,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:41:32,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:41:32,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:41:32,413 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:41:32,413 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:41:32,414 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2019-10-02 17:41:32,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c0ab800/7402e875105d49d7a8adca4cde3c1324/FLAGa6a8e6e2c [2019-10-02 17:41:33,085 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:41:33,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2019-10-02 17:41:33,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c0ab800/7402e875105d49d7a8adca4cde3c1324/FLAGa6a8e6e2c [2019-10-02 17:41:33,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c0ab800/7402e875105d49d7a8adca4cde3c1324 [2019-10-02 17:41:33,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:41:33,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:41:33,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:41:33,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:41:33,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:41:33,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:41:33" (1/1) ... [2019-10-02 17:41:33,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c3d37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:33, skipping insertion in model container [2019-10-02 17:41:33,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:41:33" (1/1) ... [2019-10-02 17:41:33,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:41:33,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:41:33,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:41:33,949 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:41:34,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:41:34,104 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:41:34,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34 WrapperNode [2019-10-02 17:41:34,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:41:34,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:41:34,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:41:34,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:41:34,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... [2019-10-02 17:41:34,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:41:34,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:41:34,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:41:34,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:41:34,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:41:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:41:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:41:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:41:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:41:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:41:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:41:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:41:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:41:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:41:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:41:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:41:35,614 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:41:35,614 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:41:35,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:41:35 BoogieIcfgContainer [2019-10-02 17:41:35,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:41:35,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:41:35,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:41:35,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:41:35,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:41:33" (1/3) ... [2019-10-02 17:41:35,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8963a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:41:35, skipping insertion in model container [2019-10-02 17:41:35,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:41:34" (2/3) ... [2019-10-02 17:41:35,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8963a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:41:35, skipping insertion in model container [2019-10-02 17:41:35,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:41:35" (3/3) ... [2019-10-02 17:41:35,628 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2019-10-02 17:41:35,639 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:41:35,648 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:41:35,664 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:41:35,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:41:35,690 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:41:35,690 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:41:35,690 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:41:35,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:41:35,691 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:41:35,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:41:35,691 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:41:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-02 17:41:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-02 17:41:35,730 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:41:35,731 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:41:35,734 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:41:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:41:35,740 INFO L82 PathProgramCache]: Analyzing trace with hash -667012847, now seen corresponding path program 1 times [2019-10-02 17:41:35,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:41:35,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:35,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:41:35,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:35,791 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:41:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:41:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:41:36,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:41:36,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:41:36,147 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:41:36,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:41:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:41:36,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:41:36,172 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-02 17:41:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:41:37,225 INFO L93 Difference]: Finished difference Result 388 states and 591 transitions. [2019-10-02 17:41:37,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:41:37,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-10-02 17:41:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:41:37,264 INFO L225 Difference]: With dead ends: 388 [2019-10-02 17:41:37,264 INFO L226 Difference]: Without dead ends: 320 [2019-10-02 17:41:37,268 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:41:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-02 17:41:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2019-10-02 17:41:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-02 17:41:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 470 transitions. [2019-10-02 17:41:37,350 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 470 transitions. Word has length 97 [2019-10-02 17:41:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:41:37,351 INFO L475 AbstractCegarLoop]: Abstraction has 318 states and 470 transitions. [2019-10-02 17:41:37,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:41:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 470 transitions. [2019-10-02 17:41:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-02 17:41:37,363 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:41:37,364 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:41:37,364 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:41:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:41:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash -438524216, now seen corresponding path program 1 times [2019-10-02 17:41:37,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:41:37,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:37,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:41:37,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:37,369 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:41:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:41:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:41:37,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:41:37,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:41:37,528 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:41:37,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:41:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:41:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:41:37,530 INFO L87 Difference]: Start difference. First operand 318 states and 470 transitions. Second operand 3 states. [2019-10-02 17:41:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:41:38,170 INFO L93 Difference]: Finished difference Result 608 states and 876 transitions. [2019-10-02 17:41:38,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:41:38,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-02 17:41:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:41:38,176 INFO L225 Difference]: With dead ends: 608 [2019-10-02 17:41:38,176 INFO L226 Difference]: Without dead ends: 608 [2019-10-02 17:41:38,177 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:41:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-02 17:41:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-02 17:41:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-02 17:41:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 876 transitions. [2019-10-02 17:41:38,232 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 876 transitions. Word has length 110 [2019-10-02 17:41:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:41:38,233 INFO L475 AbstractCegarLoop]: Abstraction has 608 states and 876 transitions. [2019-10-02 17:41:38,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:41:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 876 transitions. [2019-10-02 17:41:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-02 17:41:38,237 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:41:38,238 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:41:38,238 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:41:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:41:38,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1696293539, now seen corresponding path program 1 times [2019-10-02 17:41:38,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:41:38,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:38,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:41:38,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:41:38,241 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:41:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:41:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:41:38,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 17:41:38,408 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 17:41:38,409 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2019-10-02 17:41:38,411 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [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], [336], [341], [343], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [455], [457], [863], [867], [876], [880], [882], [887], [888], [889], [891], [892] [2019-10-02 17:41:38,479 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 17:41:38,479 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 17:43:34,247 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 17:43:34,249 INFO L272 AbstractInterpreter]: Visited 98 different actions 98 times. Never merged. Never widened. Performed 163 root evaluator evaluations with a maximum evaluation depth of 18. Performed 163 inverse root evaluator evaluations with a maximum inverse evaluation depth of 18. Never found a fixpoint. Largest state had 38 variables. [2019-10-02 17:43:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:43:34,253 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 17:46:01,389 INFO L227 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 80.5% of their original sizes. [2019-10-02 17:46:01,390 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 17:46:01,464 INFO L420 sIntCurrentIteration]: We unified 181 AI predicates to 181 [2019-10-02 17:46:01,464 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 17:46:01,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 17:46:01,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 17:46:01,466 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:46:01,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 17:46:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 17:46:01,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-02 17:46:01,467 INFO L87 Difference]: Start difference. First operand 608 states and 876 transitions. Second operand 10 states. [2019-10-02 17:46:14,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 17:46:14,791 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:708) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:637) 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) [2019-10-02 17:46:14,798 INFO L168 Benchmark]: Toolchain (without parser) took 281479.02 ms. Allocated memory was 137.9 MB in the beginning and 380.1 MB in the end (delta: 242.2 MB). Free memory was 82.7 MB in the beginning and 171.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 153.8 MB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,799 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 102.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.65 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 82.5 MB in the beginning and 168.0 MB in the end (delta: -85.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,801 INFO L168 Benchmark]: Boogie Preprocessor took 132.68 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 163.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,802 INFO L168 Benchmark]: RCFGBuilder took 1377.03 ms. Allocated memory was 202.4 MB in the beginning and 222.3 MB in the end (delta: 19.9 MB). Free memory was 163.2 MB in the beginning and 180.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,803 INFO L168 Benchmark]: TraceAbstraction took 279177.23 ms. Allocated memory was 222.3 MB in the beginning and 380.1 MB in the end (delta: 157.8 MB). Free memory was 178.7 MB in the beginning and 171.1 MB in the end (delta: 7.6 MB). Peak memory consumption was 165.4 MB. Max. memory is 7.1 GB. [2019-10-02 17:46:14,808 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 137.9 MB. Free memory was 102.6 MB in the beginning and 102.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.65 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 82.5 MB in the beginning and 168.0 MB in the end (delta: -85.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.68 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 163.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1377.03 ms. Allocated memory was 202.4 MB in the beginning and 222.3 MB in the end (delta: 19.9 MB). Free memory was 163.2 MB in the beginning and 180.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 279177.23 ms. Allocated memory was 222.3 MB in the beginning and 380.1 MB in the end (delta: 157.8 MB). Free memory was 178.7 MB in the beginning and 171.1 MB in the end (delta: 7.6 MB). Peak memory consumption was 165.4 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...