/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/mbpr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:45,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:45,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:45,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:45,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:45,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:45,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:45,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:45,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:45,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:45,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:45,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:45,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:45,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:45,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:45,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:45,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:45,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:45,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:45,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:45,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:45,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:45,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:45,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:45,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:45,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:45,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:45,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:45,851 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 22:27:45,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:45,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:45,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:45,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:45,887 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:45,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:45,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:45,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:45,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:45,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:45,889 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:45,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:45,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:45,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:45,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:45,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:45,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:45,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:45,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:45,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:45,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:45,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:45,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:45,897 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 22:27:46,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:46,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:46,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:46,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:46,216 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:46,217 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr5.c [2019-11-06 22:27:46,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a74120d4/a21a36e56ff44baf914223658c6a982c/FLAG465d8cc77 [2019-11-06 22:27:46,744 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:46,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr5.c [2019-11-06 22:27:46,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a74120d4/a21a36e56ff44baf914223658c6a982c/FLAG465d8cc77 [2019-11-06 22:27:47,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a74120d4/a21a36e56ff44baf914223658c6a982c [2019-11-06 22:27:47,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:47,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:47,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:47,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:47,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:47,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11edcc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47, skipping insertion in model container [2019-11-06 22:27:47,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,154 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:47,176 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:47,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:47,414 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:47,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:47,587 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47 WrapperNode [2019-11-06 22:27:47,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:47,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:47,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:47,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:47,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (1/1) ... [2019-11-06 22:27:47,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:47,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:47,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:47,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:47,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (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 22:27:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:27:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:48,154 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:48,154 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-06 22:27:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:48 BoogieIcfgContainer [2019-11-06 22:27:48,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:48,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:48,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:48,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:48,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:47" (1/3) ... [2019-11-06 22:27:48,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475d54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:48, skipping insertion in model container [2019-11-06 22:27:48,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:47" (2/3) ... [2019-11-06 22:27:48,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475d54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:48, skipping insertion in model container [2019-11-06 22:27:48,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:48" (3/3) ... [2019-11-06 22:27:48,163 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2019-11-06 22:27:48,173 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:48,181 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:48,192 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:48,216 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:48,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:48,217 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:48,217 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:48,217 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:48,217 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:48,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:48,218 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-06 22:27:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:27:48,244 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:48,245 INFO L410 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] [2019-11-06 22:27:48,246 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1208064678, now seen corresponding path program 1 times [2019-11-06 22:27:48,258 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:48,259 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900158981] [2019-11-06 22:27:48,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:48,432 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 22:27:48,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900158981] [2019-11-06 22:27:48,434 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:48,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:48,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280205275] [2019-11-06 22:27:48,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:48,444 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:48,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:48,463 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-11-06 22:27:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:48,498 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2019-11-06 22:27:48,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:48,499 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-11-06 22:27:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:48,507 INFO L225 Difference]: With dead ends: 88 [2019-11-06 22:27:48,507 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 22:27:48,510 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 22:27:48,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 22:27:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-06 22:27:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:27:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-11-06 22:27:48,550 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 24 [2019-11-06 22:27:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:48,551 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-11-06 22:27:48,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-11-06 22:27:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:27:48,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:48,553 INFO L410 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] [2019-11-06 22:27:48,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash 625586285, now seen corresponding path program 1 times [2019-11-06 22:27:48,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:48,555 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69264372] [2019-11-06 22:27:48,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:48,693 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 22:27:48,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69264372] [2019-11-06 22:27:48,694 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:48,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:27:48,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460767464] [2019-11-06 22:27:48,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:27:48,697 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:48,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:48,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:27:48,698 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2019-11-06 22:27:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:48,768 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2019-11-06 22:27:48,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:27:48,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-06 22:27:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:48,771 INFO L225 Difference]: With dead ends: 52 [2019-11-06 22:27:48,771 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 22:27:48,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:27:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 22:27:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2019-11-06 22:27:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-06 22:27:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2019-11-06 22:27:48,783 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 24 [2019-11-06 22:27:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:48,783 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2019-11-06 22:27:48,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:27:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2019-11-06 22:27:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:27:48,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:48,785 INFO L410 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] [2019-11-06 22:27:48,785 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash 627433327, now seen corresponding path program 1 times [2019-11-06 22:27:48,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:48,786 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045911063] [2019-11-06 22:27:48,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:49,022 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 22:27:49,022 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045911063] [2019-11-06 22:27:49,023 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:49,023 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:27:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649083333] [2019-11-06 22:27:49,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:49,024 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:49,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:49,025 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2019-11-06 22:27:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:49,180 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2019-11-06 22:27:49,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:49,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-06 22:27:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:49,184 INFO L225 Difference]: With dead ends: 90 [2019-11-06 22:27:49,184 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 22:27:49,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 22:27:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-11-06 22:27:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-06 22:27:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2019-11-06 22:27:49,211 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 24 [2019-11-06 22:27:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:49,214 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2019-11-06 22:27:49,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:27:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2019-11-06 22:27:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-06 22:27:49,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:49,215 INFO L410 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] [2019-11-06 22:27:49,216 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash 506953876, now seen corresponding path program 1 times [2019-11-06 22:27:49,218 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:49,218 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341192244] [2019-11-06 22:27:49,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:49,391 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341192244] [2019-11-06 22:27:49,391 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687122357] [2019-11-06 22:27:49,391 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 22:27:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:49,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:27:49,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:49,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:49,545 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:49,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:27:49,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:49,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:49,655 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1286937978] [2019-11-06 22:27:49,673 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 29 [2019-11-06 22:27:49,751 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:49,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:49,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:49,834 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 22 root evaluator evaluations with a maximum evaluation depth of 2. Performed 22 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 32 variables. [2019-11-06 22:27:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:49,837 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:49,874 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:27:49,875 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:49,879 INFO L553 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2019-11-06 22:27:49,879 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:49,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:49,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5, 5] total 10 [2019-11-06 22:27:49,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347053652] [2019-11-06 22:27:49,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:49,882 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:27:49,882 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 3 states. [2019-11-06 22:27:49,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:50,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:50,089 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: 537#true or 750#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]) 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 22:27:50,098 INFO L168 Benchmark]: Toolchain (without parser) took 2959.13 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 104.1 MB in the beginning and 154.5 MB in the end (delta: -50.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,099 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.10 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.9 MB in the beginning and 181.2 MB in the end (delta: -77.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,103 INFO L168 Benchmark]: Boogie Preprocessor took 53.77 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 178.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,104 INFO L168 Benchmark]: RCFGBuilder took 513.41 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 154.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,107 INFO L168 Benchmark]: TraceAbstraction took 1938.66 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 153.9 MB in the beginning and 154.5 MB in the end (delta: -594.6 kB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:50,116 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 449.10 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.9 MB in the beginning and 181.2 MB in the end (delta: -77.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.77 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 178.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.41 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 154.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1938.66 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 153.9 MB in the beginning and 154.5 MB in the end (delta: -594.6 kB). Peak memory consumption was 31.4 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: 537#true or 750#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 537#true or 750#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]): 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...