/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/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:56,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:56,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:56,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:56,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:56,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:56,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:56,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:56,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:56,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:56,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:56,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:56,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:56,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:56,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:56,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:56,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:56,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:56,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:56,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:56,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:56,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:56,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:56,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:56,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:56,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:56,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:56,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:56,640 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 22:27:56,673 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:56,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:56,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:56,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:56,675 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:56,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:56,676 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:56,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:56,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:56,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:56,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:56,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:56,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:56,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:56,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:56,678 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:56,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:56,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:56,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:56,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:56,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:56,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:56,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:56,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:56,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:56,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:56,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:56,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:56,681 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 22:27:56,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:56,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:56,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:56,981 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:56,981 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:56,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2019-11-06 22:27:57,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b11ab926/c933234eda6e4b668b723ae896b79efb/FLAGdcac1f661 [2019-11-06 22:27:57,529 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:57,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c [2019-11-06 22:27:57,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b11ab926/c933234eda6e4b668b723ae896b79efb/FLAGdcac1f661 [2019-11-06 22:27:57,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b11ab926/c933234eda6e4b668b723ae896b79efb [2019-11-06 22:27:57,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:57,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:57,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:57,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:57,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:57,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:57" (1/1) ... [2019-11-06 22:27:57,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed1c93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:57, skipping insertion in model container [2019-11-06 22:27:57,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:57" (1/1) ... [2019-11-06 22:27:57,934 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:57,956 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:58,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:58,164 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:58,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:58,280 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:58,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58 WrapperNode [2019-11-06 22:27:58,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:58,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:58,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:58,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:58,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (1/1) ... [2019-11-06 22:27:58,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:58,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:58,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:58,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:58,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (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 22:27:58,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:27:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:58,706 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:58,706 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 22:27:58,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:58 BoogieIcfgContainer [2019-11-06 22:27:58,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:58,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:58,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:58,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:58,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:57" (1/3) ... [2019-11-06 22:27:58,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df6b106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:58, skipping insertion in model container [2019-11-06 22:27:58,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:58" (2/3) ... [2019-11-06 22:27:58,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df6b106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:58, skipping insertion in model container [2019-11-06 22:27:58,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:58" (3/3) ... [2019-11-06 22:27:58,723 INFO L109 eAbstractionObserver]: Analyzing ICFG pr4.c [2019-11-06 22:27:58,733 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:58,740 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:58,752 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:58,778 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:58,778 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:58,778 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:58,778 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:58,779 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:58,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:58,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:58,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:58,800 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-06 22:27:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:27:58,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:58,806 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:58,807 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:58,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1387739323, now seen corresponding path program 1 times [2019-11-06 22:27:58,820 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:58,820 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056073052] [2019-11-06 22:27:58,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:59,021 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 22:27:59,022 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056073052] [2019-11-06 22:27:59,023 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:59,023 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:27:59,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121543853] [2019-11-06 22:27:59,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:27:59,029 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:27:59,046 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2019-11-06 22:27:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:59,144 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2019-11-06 22:27:59,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:27:59,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-06 22:27:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:59,156 INFO L225 Difference]: With dead ends: 56 [2019-11-06 22:27:59,156 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 22:27:59,160 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 22:27:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 22:27:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-06 22:27:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:27:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-11-06 22:27:59,197 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2019-11-06 22:27:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:59,198 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-06 22:27:59,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:27:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-11-06 22:27:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:27:59,199 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:59,199 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:59,200 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1385892281, now seen corresponding path program 1 times [2019-11-06 22:27:59,201 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:59,201 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486974799] [2019-11-06 22:27:59,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:59,442 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 22:27:59,442 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486974799] [2019-11-06 22:27:59,442 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:59,443 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:27:59,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706876455] [2019-11-06 22:27:59,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:59,445 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:59,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:59,446 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2019-11-06 22:27:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:59,527 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2019-11-06 22:27:59,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:59,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-06 22:27:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:59,531 INFO L225 Difference]: With dead ends: 54 [2019-11-06 22:27:59,531 INFO L226 Difference]: Without dead ends: 37 [2019-11-06 22:27:59,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-06 22:27:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2019-11-06 22:27:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 22:27:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-06 22:27:59,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2019-11-06 22:27:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:59,542 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-06 22:27:59,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:27:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-06 22:27:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 22:27:59,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:59,543 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] [2019-11-06 22:27:59,543 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:59,544 INFO L82 PathProgramCache]: Analyzing trace with hash 830594452, now seen corresponding path program 1 times [2019-11-06 22:27:59,544 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:59,544 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194611609] [2019-11-06 22:27:59,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:59,987 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 22:27:59,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194611609] [2019-11-06 22:27:59,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552212297] [2019-11-06 22:27:59,988 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 22:28:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:28:00,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-06 22:28:00,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:28:00,148 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-06 22:28:00,149 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,168 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,169 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,169 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2019-11-06 22:28:00,205 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:28:00,206 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-11-06 22:28:00,207 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,216 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,217 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,218 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-11-06 22:28:00,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:28:00,234 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-11-06 22:28:00,235 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,245 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,246 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,246 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-11-06 22:28:00,254 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:28:00,256 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-06 22:28:00,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,267 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,268 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,268 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2019-11-06 22:28:00,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:00,342 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 22:28:00,342 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:28:00,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:28:00,482 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2019-11-06 22:28:00,490 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-11-06 22:28:00,491 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,494 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,497 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:28:00,497 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:28:00,497 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:8 [2019-11-06 22:28:00,523 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 22:28:00,524 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [533989621] [2019-11-06 22:28:00,530 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-11-06 22:28:00,580 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:28:00,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:28:00,660 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:28:00,662 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 27 variables. [2019-11-06 22:28:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:28:00,667 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:28:00,703 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:28:00,704 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:28:00,709 INFO L553 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-11-06 22:28:00,709 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:28:00,710 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:28:00,710 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 8, 6] total 19 [2019-11-06 22:28:00,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407808918] [2019-11-06 22:28:00,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:28:00,712 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:28:00,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:28:00,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:28:00,713 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2019-11-06 22:28:00,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:28:00,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:28:00,923 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: 269#true or 449#(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 22:28:00,929 INFO L168 Benchmark]: Toolchain (without parser) took 3011.01 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.2 MB in the beginning and 129.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:00,929 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 139.5 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:28:00,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.21 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 181.9 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:00,931 INFO L168 Benchmark]: Boogie Preprocessor took 39.21 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:00,932 INFO L168 Benchmark]: RCFGBuilder took 384.75 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 162.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:00,933 INFO L168 Benchmark]: TraceAbstraction took 2211.40 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.8 MB in the beginning and 129.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:28:00,937 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 139.5 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.21 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 181.9 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.21 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.75 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 162.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2211.40 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.8 MB in the beginning and 129.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 65.4 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: 269#true or 449#(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: 269#true or 449#(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...