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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:50:44,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:50:44,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:50:44,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:50:44,726 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 06:50:44,740 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:50:44,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:50:44,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:50:44,741 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:50:44,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:50:44,742 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:50:44,742 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:50:44,742 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:50:44,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:50:44,743 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:50:44,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:50:44,743 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:50:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:50:44,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:50:44,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:50:44,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:50:44,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:50:44,745 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:50:44,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:50:44,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:50:44,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:50:44,745 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:50:44,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:50:44,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:50:44,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:50:44,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:50:44,747 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:50:44,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:50:44,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:50:44,747 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:50:44,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:50:44,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:50:44,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:50:44,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:50:44,818 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:50:44,819 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2019-09-09 06:50:44,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3151ea9/d1b743dd0cb44d13a424ef8980477a72/FLAG5aba4e002 [2019-09-09 06:50:45,423 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:50:45,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2019-09-09 06:50:45,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3151ea9/d1b743dd0cb44d13a424ef8980477a72/FLAG5aba4e002 [2019-09-09 06:50:45,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3151ea9/d1b743dd0cb44d13a424ef8980477a72 [2019-09-09 06:50:45,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:50:45,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:50:45,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:50:45,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:50:45,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:50:45,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:50:45" (1/1) ... [2019-09-09 06:50:45,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ddb41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:45, skipping insertion in model container [2019-09-09 06:50:45,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:50:45" (1/1) ... [2019-09-09 06:50:45,729 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:50:45,792 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:50:46,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:50:46,213 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:50:46,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:50:46,483 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:50:46,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46 WrapperNode [2019-09-09 06:50:46,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:50:46,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:50:46,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:50:46,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:50:46,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (1/1) ... [2019-09-09 06:50:46,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:50:46,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:50:46,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:50:46,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:50:46,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (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 06:50:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:50:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:50:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:50:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:50:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:50:47,804 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:50:47,804 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:50:47,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:50:47 BoogieIcfgContainer [2019-09-09 06:50:47,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:50:47,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:50:47,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:50:47,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:50:47,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:50:45" (1/3) ... [2019-09-09 06:50:47,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e54584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:50:47, skipping insertion in model container [2019-09-09 06:50:47,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:50:46" (2/3) ... [2019-09-09 06:50:47,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e54584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:50:47, skipping insertion in model container [2019-09-09 06:50:47,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:50:47" (3/3) ... [2019-09-09 06:50:47,816 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2019-09-09 06:50:47,826 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:50:47,834 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:50:47,851 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:50:47,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:50:47,877 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:50:47,878 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:50:47,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:50:47,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:50:47,880 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:50:47,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:50:47,881 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:50:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-09-09 06:50:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-09 06:50:47,920 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:50:47,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:50:47,923 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:50:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:50:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash 927745969, now seen corresponding path program 1 times [2019-09-09 06:50:47,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:50:47,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:47,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:50:47,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:47,967 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:50:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:50:48,344 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 06:50:48,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:50:48,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:50:48,347 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:50:48,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:50:48,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:50:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:50:48,370 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-09-09 06:50:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:50:49,271 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2019-09-09 06:50:49,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:50:49,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-09-09 06:50:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:50:49,290 INFO L225 Difference]: With dead ends: 385 [2019-09-09 06:50:49,290 INFO L226 Difference]: Without dead ends: 317 [2019-09-09 06:50:49,292 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 06:50:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2019-09-09 06:50:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2019-09-09 06:50:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-09-09 06:50:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 478 transitions. [2019-09-09 06:50:49,387 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 478 transitions. Word has length 105 [2019-09-09 06:50:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:50:49,388 INFO L475 AbstractCegarLoop]: Abstraction has 317 states and 478 transitions. [2019-09-09 06:50:49,388 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:50:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 478 transitions. [2019-09-09 06:50:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-09 06:50:49,395 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:50:49,395 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:50:49,396 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:50:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:50:49,396 INFO L82 PathProgramCache]: Analyzing trace with hash -643989844, now seen corresponding path program 1 times [2019-09-09 06:50:49,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:50:49,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:49,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:50:49,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:49,398 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:50:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:50:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:50:49,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:50:49,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:50:49,512 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:50:49,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:50:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:50:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:50:49,515 INFO L87 Difference]: Start difference. First operand 317 states and 478 transitions. Second operand 6 states. [2019-09-09 06:50:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:50:50,379 INFO L93 Difference]: Finished difference Result 651 states and 992 transitions. [2019-09-09 06:50:50,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 06:50:50,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-09-09 06:50:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:50:50,388 INFO L225 Difference]: With dead ends: 651 [2019-09-09 06:50:50,388 INFO L226 Difference]: Without dead ends: 651 [2019-09-09 06:50:50,389 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 06:50:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-09-09 06:50:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 625. [2019-09-09 06:50:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-09-09 06:50:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 924 transitions. [2019-09-09 06:50:50,433 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 924 transitions. Word has length 120 [2019-09-09 06:50:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:50:50,433 INFO L475 AbstractCegarLoop]: Abstraction has 625 states and 924 transitions. [2019-09-09 06:50:50,433 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:50:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 924 transitions. [2019-09-09 06:50:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-09 06:50:50,442 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:50:50,442 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:50:50,443 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:50:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:50:50,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1294788921, now seen corresponding path program 1 times [2019-09-09 06:50:50,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:50:50,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:50,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:50:50,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:50:50,449 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:50:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:50:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-09 06:50:50,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:50:50,613 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:50:50,614 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2019-09-09 06:50:50,617 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [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], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [519], [521], [863], [867], [876], [880], [882], [887], [888], [889], [891], [892] [2019-09-09 06:50:50,678 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:50:50,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 06:52:47,868 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 06:52:47,870 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Performed 171 root evaluator evaluations with a maximum evaluation depth of 18. Performed 171 inverse root evaluator evaluations with a maximum inverse evaluation depth of 18. Never found a fixpoint. Largest state had 38 variables. [2019-09-09 06:52:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:47,873 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 06:54:11,650 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 80.66% of their original sizes. [2019-09-09 06:54:11,651 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 06:54:11,713 INFO L420 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2019-09-09 06:54:11,713 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 06:54:11,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 06:54:11,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 06:54:11,714 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:54:11,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 06:54:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 06:54:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-09-09 06:54:11,716 INFO L87 Difference]: Start difference. First operand 625 states and 924 transitions. Second operand 10 states. [2019-09-09 06:54:22,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 06:54:22,005 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 06:54:22,012 INFO L168 Benchmark]: Toolchain (without parser) took 216298.72 ms. Allocated memory was 134.2 MB in the beginning and 394.3 MB in the end (delta: 260.0 MB). Free memory was 89.3 MB in the beginning and 258.6 MB in the end (delta: -169.3 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,013 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.32 ms. Allocated memory was 134.2 MB in the beginning and 203.9 MB in the end (delta: 69.7 MB). Free memory was 89.1 MB in the beginning and 169.3 MB in the end (delta: -80.1 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,015 INFO L168 Benchmark]: Boogie Preprocessor took 109.14 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 164.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,016 INFO L168 Benchmark]: RCFGBuilder took 1214.78 ms. Allocated memory was 203.9 MB in the beginning and 230.7 MB in the end (delta: 26.7 MB). Free memory was 164.7 MB in the beginning and 183.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,017 INFO L168 Benchmark]: TraceAbstraction took 214200.14 ms. Allocated memory was 230.7 MB in the beginning and 394.3 MB in the end (delta: 163.6 MB). Free memory was 183.2 MB in the beginning and 258.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2019-09-09 06:54:22,022 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.32 ms. Allocated memory was 134.2 MB in the beginning and 203.9 MB in the end (delta: 69.7 MB). Free memory was 89.1 MB in the beginning and 169.3 MB in the end (delta: -80.1 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.14 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 164.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.78 ms. Allocated memory was 203.9 MB in the beginning and 230.7 MB in the end (delta: 26.7 MB). Free memory was 164.7 MB in the beginning and 183.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214200.14 ms. Allocated memory was 230.7 MB in the beginning and 394.3 MB in the end (delta: 163.6 MB). Free memory was 183.2 MB in the beginning and 258.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 88.1 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...