/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/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:35:42,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:35:42,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:35:42,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:35:42,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:35:42,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:35:43,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:35:43,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:35:43,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:35:43,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:35:43,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:35:43,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:35:43,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:35:43,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:35:43,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:35:43,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:35:43,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:35:43,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:35:43,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:35:43,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:35:43,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:35:43,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:35:43,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:35:43,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:35:43,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:35:43,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:35:43,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:35:43,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:35:43,065 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 00:35:43,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:35:43,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:35:43,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:35:43,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:35:43,087 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:35:43,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:35:43,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:35:43,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:35:43,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:35:43,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:35:43,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:35:43,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:35:43,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:35:43,090 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:35:43,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:35:43,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:35:43,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:35:43,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:35:43,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:35:43,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:35:43,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:35:43,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:43,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:35:43,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:35:43,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:35:43,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:35:43,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:35:43,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:35:43,093 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 00:35:43,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:35:43,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:35:43,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:35:43,435 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:35:43,435 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:35:43,436 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2019-11-07 00:35:43,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f011baade/f02f7afa0bee4633acc1f32e9193c3b9/FLAGf2db7fc82 [2019-11-07 00:35:43,921 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:35:43,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2019-11-07 00:35:43,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f011baade/f02f7afa0bee4633acc1f32e9193c3b9/FLAGf2db7fc82 [2019-11-07 00:35:44,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f011baade/f02f7afa0bee4633acc1f32e9193c3b9 [2019-11-07 00:35:44,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:35:44,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:35:44,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:44,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:35:44,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:35:44,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7a63ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44, skipping insertion in model container [2019-11-07 00:35:44,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,424 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:35:44,470 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:35:44,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:44,835 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:35:44,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:44,872 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:35:44,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44 WrapperNode [2019-11-07 00:35:44,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:44,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:35:44,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:35:44,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:35:44,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (1/1) ... [2019-11-07 00:35:44,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:35:44,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:35:45,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:35:45,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:35:45,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (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 00:35:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:35:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:35:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:35:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:35:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:35:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:35:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:35:45,265 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:35:45,266 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:35:45,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:45 BoogieIcfgContainer [2019-11-07 00:35:45,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:35:45,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:35:45,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:35:45,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:35:45,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:35:44" (1/3) ... [2019-11-07 00:35:45,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47def4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:45, skipping insertion in model container [2019-11-07 00:35:45,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:44" (2/3) ... [2019-11-07 00:35:45,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47def4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:45, skipping insertion in model container [2019-11-07 00:35:45,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:45" (3/3) ... [2019-11-07 00:35:45,275 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-11-07 00:35:45,285 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:35:45,292 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:35:45,308 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:35:45,378 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:35:45,379 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:35:45,379 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:35:45,379 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:35:45,379 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:35:45,379 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:35:45,379 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:35:45,380 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:35:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-07 00:35:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 00:35:45,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:45,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:45,414 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1526440521, now seen corresponding path program 1 times [2019-11-07 00:35:45,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:45,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740408194] [2019-11-07 00:35:45,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:45,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740408194] [2019-11-07 00:35:45,579 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:45,579 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:35:45,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677053244] [2019-11-07 00:35:45,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:35:45,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:45,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:35:45,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:45,604 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-07 00:35:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:45,625 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-07 00:35:45,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:35:45,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-07 00:35:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:45,637 INFO L225 Difference]: With dead ends: 28 [2019-11-07 00:35:45,637 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 00:35:45,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 00:35:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 00:35:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 00:35:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 00:35:45,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 00:35:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:45,678 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 00:35:45,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:35:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 00:35:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:35:45,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:45,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:45,680 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash -281053369, now seen corresponding path program 1 times [2019-11-07 00:35:45,681 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:45,681 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186566489] [2019-11-07 00:35:45,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:45,779 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186566489] [2019-11-07 00:35:45,779 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:45,780 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:35:45,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954637299] [2019-11-07 00:35:45,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:35:45,782 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:35:45,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:35:45,783 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-07 00:35:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:45,818 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-07 00:35:45,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:35:45,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-07 00:35:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:45,820 INFO L225 Difference]: With dead ends: 20 [2019-11-07 00:35:45,820 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 00:35:45,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:35:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 00:35:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 00:35:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 00:35:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-07 00:35:45,826 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-11-07 00:35:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:45,827 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-07 00:35:45,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:35:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-07 00:35:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 00:35:45,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:45,828 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:45,828 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1999502604, now seen corresponding path program 1 times [2019-11-07 00:35:45,829 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:45,829 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294992079] [2019-11-07 00:35:45,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:45,912 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:274) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) 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 00:35:45,920 INFO L168 Benchmark]: Toolchain (without parser) took 1534.66 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 107.3 MB in the beginning and 137.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,922 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 125.4 MB in the beginning and 125.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.60 ms. Allocated memory is still 144.7 MB. Free memory was 107.1 MB in the beginning and 97.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,925 INFO L168 Benchmark]: Boogie Preprocessor took 125.61 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 97.2 MB in the beginning and 181.6 MB in the end (delta: -84.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,928 INFO L168 Benchmark]: RCFGBuilder took 267.96 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 168.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,929 INFO L168 Benchmark]: TraceAbstraction took 646.76 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 137.6 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:45,937 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 125.4 MB in the beginning and 125.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 489.60 ms. Allocated memory is still 144.7 MB. Free memory was 107.1 MB in the beginning and 97.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.61 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 97.2 MB in the beginning and 181.6 MB in the end (delta: -84.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.96 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 168.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 646.76 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 137.6 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...