/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/reducercommutativity/sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:04:22,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:04:22,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:04:22,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:04:22,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:04:22,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:04:22,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:04:22,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:04:22,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:04:22,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:04:22,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:04:22,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:04:22,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:04:22,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:04:22,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:04:22,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:04:22,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:04:22,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:04:22,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:04:22,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:04:22,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:04:22,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:04:22,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:04:22,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:04:22,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:04:22,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:04:22,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:04:22,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:04:22,778 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 [2019-11-07 01:04:22,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:04:22,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:04:22,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:04:22,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:04:22,796 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:04:22,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:04:22,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:04:22,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:04:22,797 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:04:22,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:04:22,798 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:04:22,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:04:22,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:04:22,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:04:22,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:04:22,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:04:22,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:04:22,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:04:22,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:04:22,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:04:22,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:04:22,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:04:22,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:04:22,801 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 [2019-11-07 01:04:23,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:04:23,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:04:23,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:04:23,150 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:04:23,150 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:04:23,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum.i [2019-11-07 01:04:23,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3f2b656/4c5139ae38f3464b9234d676227f9225/FLAG9a1afed32 [2019-11-07 01:04:23,651 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:04:23,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum.i [2019-11-07 01:04:23,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3f2b656/4c5139ae38f3464b9234d676227f9225/FLAG9a1afed32 [2019-11-07 01:04:24,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3f2b656/4c5139ae38f3464b9234d676227f9225 [2019-11-07 01:04:24,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:04:24,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:04:24,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:24,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:04:24,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:04:24,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68301452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24, skipping insertion in model container [2019-11-07 01:04:24,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,065 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:04:24,088 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:04:24,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:24,299 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:04:24,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:24,333 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:04:24,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24 WrapperNode [2019-11-07 01:04:24,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:24,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:04:24,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:04:24,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:04:24,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (1/1) ... [2019-11-07 01:04:24,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:04:24,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:04:24,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:04:24,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:04:24,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (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 [2019-11-07 01:04:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:04:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:04:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-07 01:04:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:04:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:04:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:04:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:04:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:04:24,838 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:04:24,838 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 01:04:24,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:24 BoogieIcfgContainer [2019-11-07 01:04:24,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:04:24,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:04:24,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:04:24,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:04:24,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:24" (1/3) ... [2019-11-07 01:04:24,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b42531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:24, skipping insertion in model container [2019-11-07 01:04:24,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:24" (2/3) ... [2019-11-07 01:04:24,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b42531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:24, skipping insertion in model container [2019-11-07 01:04:24,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:24" (3/3) ... [2019-11-07 01:04:24,848 INFO L109 eAbstractionObserver]: Analyzing ICFG sum.i [2019-11-07 01:04:24,864 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:04:24,874 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:04:24,887 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:04:24,920 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:04:24,920 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:04:24,920 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:04:24,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:04:24,920 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:04:24,920 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:04:24,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:04:24,921 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:04:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-07 01:04:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 01:04:24,951 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:24,953 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:24,954 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1754504496, now seen corresponding path program 1 times [2019-11-07 01:04:24,968 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:24,968 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958956458] [2019-11-07 01:04:24,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:04:25,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958956458] [2019-11-07 01:04:25,133 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324292449] [2019-11-07 01:04:25,133 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 [2019-11-07 01:04:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:25,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 01:04:25,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:25,270 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:04:25,346 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:04:25,346 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-11-07 01:04:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192514592] [2019-11-07 01:04:25,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 01:04:25,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:25,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 01:04:25,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 01:04:25,375 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-11-07 01:04:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:25,400 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2019-11-07 01:04:25,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:04:25,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-11-07 01:04:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:25,411 INFO L225 Difference]: With dead ends: 54 [2019-11-07 01:04:25,411 INFO L226 Difference]: Without dead ends: 25 [2019-11-07 01:04:25,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 01:04:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-07 01:04:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-07 01:04:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-07 01:04:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-07 01:04:25,458 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 32 [2019-11-07 01:04:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:25,459 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-07 01:04:25,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 01:04:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-07 01:04:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 01:04:25,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:25,462 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:25,665 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:25,665 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash 614035178, now seen corresponding path program 1 times [2019-11-07 01:04:25,666 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:25,666 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419398522] [2019-11-07 01:04:25,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 01:04:25,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419398522] [2019-11-07 01:04:25,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299196542] [2019-11-07 01:04:25,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:25,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:04:25,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:25,947 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 01:04:26,034 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:04:26,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2019-11-07 01:04:26,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948272400] [2019-11-07 01:04:26,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:04:26,036 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:04:26,038 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-11-07 01:04:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:26,116 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-11-07 01:04:26,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:04:26,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-07 01:04:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:26,118 INFO L225 Difference]: With dead ends: 44 [2019-11-07 01:04:26,119 INFO L226 Difference]: Without dead ends: 27 [2019-11-07 01:04:26,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:04:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-07 01:04:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-07 01:04:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-07 01:04:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-07 01:04:26,136 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 32 [2019-11-07 01:04:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:26,136 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-07 01:04:26,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:04:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-07 01:04:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 01:04:26,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:26,138 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:26,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:26,342 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:26,343 INFO L82 PathProgramCache]: Analyzing trace with hash 435243016, now seen corresponding path program 1 times [2019-11-07 01:04:26,343 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:26,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970574749] [2019-11-07 01:04:26,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 01:04:26,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970574749] [2019-11-07 01:04:26,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:04:26,435 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 01:04:26,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011202352] [2019-11-07 01:04:26,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:04:26,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:04:26,438 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2019-11-07 01:04:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:26,491 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-11-07 01:04:26,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:04:26,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-11-07 01:04:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:26,499 INFO L225 Difference]: With dead ends: 41 [2019-11-07 01:04:26,500 INFO L226 Difference]: Without dead ends: 28 [2019-11-07 01:04:26,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:04:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-07 01:04:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-07 01:04:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-07 01:04:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-11-07 01:04:26,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 38 [2019-11-07 01:04:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:26,509 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-11-07 01:04:26,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:04:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-11-07 01:04:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 01:04:26,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:26,511 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:26,511 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash 573397766, now seen corresponding path program 1 times [2019-11-07 01:04:26,512 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:26,512 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494863203] [2019-11-07 01:04:26,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 01:04:26,593 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494863203] [2019-11-07 01:04:26,593 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538864929] [2019-11-07 01:04:26,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:26,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:04:26,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 01:04:26,688 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 01:04:26,776 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1285837894] [2019-11-07 01:04:26,783 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 41 [2019-11-07 01:04:26,827 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 01:04:26,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 01:04:26,887 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 01:04:26,888 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 30 variables. [2019-11-07 01:04:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:26,892 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 01:04:26,933 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-07 01:04:26,933 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 01:04:26,938 INFO L553 sIntCurrentIteration]: We unified 39 AI predicates to 39 [2019-11-07 01:04:26,942 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 01:04:26,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 01:04:26,943 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5, 6] total 11 [2019-11-07 01:04:26,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533296965] [2019-11-07 01:04:26,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:26,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:26,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:04:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:04:26,946 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2019-11-07 01:04:26,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:04:27,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:27,148 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: 723#true or 1021#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~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) [2019-11-07 01:04:27,154 INFO L168 Benchmark]: Toolchain (without parser) took 3105.10 ms. Allocated memory was 144.7 MB in the beginning and 234.4 MB in the end (delta: 89.7 MB). Free memory was 102.7 MB in the beginning and 141.1 MB in the end (delta: -38.4 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,156 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.74 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,157 INFO L168 Benchmark]: Boogie Preprocessor took 148.88 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.1 MB in the beginning and 179.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,158 INFO L168 Benchmark]: RCFGBuilder took 356.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.1 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,159 INFO L168 Benchmark]: TraceAbstraction took 2311.15 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 141.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:27,174 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.74 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.88 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.1 MB in the beginning and 179.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.1 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2311.15 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 141.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 54.2 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: 723#true or 1021#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 723#true or 1021#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~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...