/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:28:03,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:28:03,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:28:03,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:28:03,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:28:03,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:28:03,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:28:03,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:28:03,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:28:03,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:28:03,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:28:03,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:28:03,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:28:03,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:28:03,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:28:03,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:28:03,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:28:03,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:28:03,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:28:03,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:28:03,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:28:03,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:28:03,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:28:03,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:28:03,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:28:03,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:28:03,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:28:03,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:28:03,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:28:03,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:28:03,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:28:03,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:28:03,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:28:03,134 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:28:03,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:28:03,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:28:03,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:28:03,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:28:03,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:28:03,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:28:03,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:28:03,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:28:03,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:28:03,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:28:03,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:28:03,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:28:03,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:28:03,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:28:03,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:28:03,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:28:03,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:28:03,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:28:03,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:28:03,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:28:03,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:28:03,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:28:03,439 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:28:03,439 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:28:03,440 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-11-06 22:28:03,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab51905a/8bb5e1907aa24812853115a2155fda96/FLAG739fc03b5 [2019-11-06 22:28:03,983 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:28:03,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-11-06 22:28:03,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab51905a/8bb5e1907aa24812853115a2155fda96/FLAG739fc03b5 [2019-11-06 22:28:04,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab51905a/8bb5e1907aa24812853115a2155fda96 [2019-11-06 22:28:04,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:28:04,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:28:04,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:28:04,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:28:04,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:28:04,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46742f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04, skipping insertion in model container [2019-11-06 22:28:04,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,399 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:28:04,419 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:28:04,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:28:04,611 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:28:04,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:28:04,639 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:28:04,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04 WrapperNode [2019-11-06 22:28:04,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:28:04,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:28:04,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:28:04,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:28:04,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... [2019-11-06 22:28:04,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:28:04,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:28:04,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:28:04,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:28:04,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:28:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:28:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:28:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:28:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:28:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:28:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:28:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:28:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:28:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:28:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:28:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:28:05,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:28:05,055 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 22:28:05,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:05 BoogieIcfgContainer [2019-11-06 22:28:05,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:28:05,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:28:05,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:28:05,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:28:05,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:04" (1/3) ... [2019-11-06 22:28:05,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459f008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:05, skipping insertion in model container [2019-11-06 22:28:05,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:04" (2/3) ... [2019-11-06 22:28:05,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459f008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:05, skipping insertion in model container [2019-11-06 22:28:05,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:05" (3/3) ... [2019-11-06 22:28:05,070 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2019-11-06 22:28:05,081 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:28:05,090 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:28:05,103 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:28:05,127 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:28:05,127 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:28:05,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:28:05,127 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:28:05,127 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:28:05,127 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:28:05,128 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:28:05,128 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:28:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-06 22:28:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:28:05,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:28:05,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:28:05,157 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:28:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:05,165 INFO L82 PathProgramCache]: Analyzing trace with hash -516860939, now seen corresponding path program 1 times [2019-11-06 22:28:05,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:28:05,174 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708174807] [2019-11-06 22:28:05,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:28:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:05,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708174807] [2019-11-06 22:28:05,308 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:28:05,309 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:28:05,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487064385] [2019-11-06 22:28:05,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:28:05,316 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:28:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:28:05,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:28:05,335 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-06 22:28:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:28:05,359 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-06 22:28:05,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:28:05,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-06 22:28:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:28:05,370 INFO L225 Difference]: With dead ends: 41 [2019-11-06 22:28:05,370 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 22:28:05,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:28:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 22:28:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 22:28:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 22:28:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-06 22:28:05,415 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-11-06 22:28:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:28:05,416 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-06 22:28:05,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:28:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-06 22:28:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:28:05,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:28:05,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:28:05,418 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:28:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1546915729, now seen corresponding path program 1 times [2019-11-06 22:28:05,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:28:05,419 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670184826] [2019-11-06 22:28:05,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:28:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:05,549 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670184826] [2019-11-06 22:28:05,550 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:28:05,550 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:28:05,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515626665] [2019-11-06 22:28:05,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:28:05,553 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:28:05,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:28:05,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:28:05,554 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-11-06 22:28:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:28:05,607 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-11-06 22:28:05,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:28:05,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-06 22:28:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:28:05,609 INFO L225 Difference]: With dead ends: 32 [2019-11-06 22:28:05,610 INFO L226 Difference]: Without dead ends: 21 [2019-11-06 22:28:05,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:28:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-06 22:28:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-06 22:28:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-06 22:28:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-06 22:28:05,620 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-11-06 22:28:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:28:05,620 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-06 22:28:05,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:28:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-06 22:28:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:28:05,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:28:05,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:28:05,624 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:28:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:05,627 INFO L82 PathProgramCache]: Analyzing trace with hash -586037587, now seen corresponding path program 1 times [2019-11-06 22:28:05,627 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:28:05,628 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429233162] [2019-11-06 22:28:05,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:28:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:06,087 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429233162] [2019-11-06 22:28:06,087 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:28:06,087 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:28:06,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120169580] [2019-11-06 22:28:06,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:28:06,091 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:28:06,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:28:06,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:28:06,092 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2019-11-06 22:28:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:28:06,261 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-06 22:28:06,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:28:06,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-06 22:28:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:28:06,263 INFO L225 Difference]: With dead ends: 31 [2019-11-06 22:28:06,264 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 22:28:06,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:28:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 22:28:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-06 22:28:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:28:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-06 22:28:06,273 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-11-06 22:28:06,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:28:06,274 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-06 22:28:06,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:28:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-06 22:28:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:28:06,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:28:06,276 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:28:06,276 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:28:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:06,277 INFO L82 PathProgramCache]: Analyzing trace with hash -798788415, now seen corresponding path program 1 times [2019-11-06 22:28:06,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:28:06,277 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321717864] [2019-11-06 22:28:06,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:28:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:06,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321717864] [2019-11-06 22:28:06,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346309868] [2019-11-06 22:28:06,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:28:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:06,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-06 22:28:06,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:28:06,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:28:06,754 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-11-06 22:28:06,755 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-11-06 22:28:06,756 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:06,772 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:06,773 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:06,774 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-11-06 22:28:07,195 INFO L341 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2019-11-06 22:28:07,196 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2019-11-06 22:28:07,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:07,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:07,202 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-06 22:28:07,232 INFO L567 ElimStorePlain]: treesize reduction 50, result has 23.1 percent of original size [2019-11-06 22:28:07,233 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:07,234 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:7 [2019-11-06 22:28:07,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:07,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:28:07,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:28:07,530 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [516239954] [2019-11-06 22:28:07,540 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-11-06 22:28:07,584 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:28:07,584 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:28:07,681 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:28:07,683 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 25 variables. [2019-11-06 22:28:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:07,687 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:28:07,730 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-11-06 22:28:07,730 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:28:07,741 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-11-06 22:28:07,741 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:28:07,742 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:28:07,742 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 13, 10] total 29 [2019-11-06 22:28:07,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764136755] [2019-11-06 22:28:07,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:28:07,743 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:28:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:28:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:28:07,745 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-11-06 22:28:07,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:28:07,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:28:07,952 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 285#true or 484#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:28:07,961 INFO L168 Benchmark]: Toolchain (without parser) took 3575.85 ms. Allocated memory was 146.3 MB in the beginning and 234.9 MB in the end (delta: 88.6 MB). Free memory was 102.9 MB in the beginning and 85.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,963 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.79 ms. Allocated memory is still 146.3 MB. Free memory was 102.7 MB in the beginning and 92.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,971 INFO L168 Benchmark]: Boogie Preprocessor took 125.03 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,972 INFO L168 Benchmark]: RCFGBuilder took 290.84 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,973 INFO L168 Benchmark]: TraceAbstraction took 2892.75 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.6 MB in the beginning and 85.5 MB in the end (delta: 81.1 MB). Peak memory consumption was 112.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:07,984 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.79 ms. Allocated memory is still 146.3 MB. Free memory was 102.7 MB in the beginning and 92.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.03 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.84 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2892.75 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.6 MB in the beginning and 85.5 MB in the end (delta: 81.1 MB). Peak memory consumption was 112.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 285#true or 484#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 285#true or 484#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...