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 -i ../../../trunk/examples/svcomp/loops/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:17:41,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:17:41,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:17:41,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:17:41,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:17:41,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:17:41,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:17:41,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:17:41,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:17:41,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:17:41,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:17:41,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:17:41,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:17:41,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:17:41,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:17:41,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:17:41,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:17:41,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:17:41,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:17:41,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:17:41,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:17:41,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:17:41,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:17:41,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:17:41,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:17:41,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:17:41,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:17:41,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:17:41,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:17:41,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:17:41,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:17:41,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:17:41,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:17:41,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:17:41,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:17:41,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:17:41,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:17:41,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:17:41,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:17:41,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:17:41,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:17:41,427 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 [2019-10-13 19:17:41,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:17:41,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:17:41,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:17:41,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:17:41,442 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:17:41,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:17:41,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:17:41,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:17:41,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:17:41,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:17:41,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:17:41,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:17:41,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:17:41,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:17:41,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:17:41,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:17:41,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:17:41,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:17:41,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:17:41,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:17:41,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:17:41,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:17:41,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:17:41,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:17:41,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:17:41,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:17:41,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:17:41,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:17:41,729 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:17:41,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2019-10-13 19:17:41,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a37f361/28db85e0e01243aebb46c7921acf561d/FLAG595e2f1fd [2019-10-13 19:17:42,233 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:17:42,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2019-10-13 19:17:42,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a37f361/28db85e0e01243aebb46c7921acf561d/FLAG595e2f1fd [2019-10-13 19:17:42,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a37f361/28db85e0e01243aebb46c7921acf561d [2019-10-13 19:17:42,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:17:42,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:17:42,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:42,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:17:42,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:17:42,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:42,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472088b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42, skipping insertion in model container [2019-10-13 19:17:42,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:42,653 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:17:42,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:17:42,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:42,849 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:17:42,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:42,890 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:17:42,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42 WrapperNode [2019-10-13 19:17:42,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:42,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:17:42,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:17:42,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:17:42,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:42,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:42,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:42,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:43,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:43,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:43,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (1/1) ... [2019-10-13 19:17:43,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:17:43,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:17:43,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:17:43,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:17:43,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (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 [2019-10-13 19:17:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:17:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:17:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:17:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:17:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:17:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:17:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:17:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:17:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:17:43,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:17:43,303 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:17:43,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:43 BoogieIcfgContainer [2019-10-13 19:17:43,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:17:43,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:17:43,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:17:43,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:17:43,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:42" (1/3) ... [2019-10-13 19:17:43,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160eb02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:43, skipping insertion in model container [2019-10-13 19:17:43,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:42" (2/3) ... [2019-10-13 19:17:43,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160eb02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:43, skipping insertion in model container [2019-10-13 19:17:43,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:43" (3/3) ... [2019-10-13 19:17:43,323 INFO L109 eAbstractionObserver]: Analyzing ICFG nec40.c [2019-10-13 19:17:43,333 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:17:43,340 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:17:43,360 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:17:43,389 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:17:43,389 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:17:43,389 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:17:43,389 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:17:43,389 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:17:43,390 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:17:43,390 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:17:43,390 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:17:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 19:17:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:17:43,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:43,412 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:43,414 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash -91485938, now seen corresponding path program 1 times [2019-10-13 19:17:43,428 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:43,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301549109] [2019-10-13 19:17:43,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:43,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:43,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:43,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301549109] [2019-10-13 19:17:43,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:43,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:17:43,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746438164] [2019-10-13 19:17:43,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:17:43,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:17:43,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:17:43,682 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 19:17:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:43,759 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-13 19:17:43,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:17:43,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 19:17:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:43,770 INFO L225 Difference]: With dead ends: 38 [2019-10-13 19:17:43,770 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 19:17:43,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:17:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 19:17:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 19:17:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 19:17:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-13 19:17:43,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2019-10-13 19:17:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:43,818 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-13 19:17:43,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:17:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-13 19:17:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:17:43,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:43,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:43,820 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:43,821 INFO L82 PathProgramCache]: Analyzing trace with hash 883179888, now seen corresponding path program 1 times [2019-10-13 19:17:43,821 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:43,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141368796] [2019-10-13 19:17:43,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:43,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:43,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:43,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141368796] [2019-10-13 19:17:43,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:43,959 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:17:43,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819698332] [2019-10-13 19:17:43,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:17:43,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:43,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:17:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:17:43,962 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2019-10-13 19:17:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:44,076 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-10-13 19:17:44,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:17:44,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-13 19:17:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:44,078 INFO L225 Difference]: With dead ends: 26 [2019-10-13 19:17:44,078 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 19:17:44,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:17:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 19:17:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 19:17:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 19:17:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-13 19:17:44,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-10-13 19:17:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:44,086 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-13 19:17:44,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:17:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-13 19:17:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:17:44,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:44,089 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:44,090 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:44,091 INFO L82 PathProgramCache]: Analyzing trace with hash 975532875, now seen corresponding path program 1 times [2019-10-13 19:17:44,091 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:44,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576168393] [2019-10-13 19:17:44,091 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:44,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:44,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:44,181 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.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) 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.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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) [2019-10-13 19:17:44,186 INFO L168 Benchmark]: Toolchain (without parser) took 1548.42 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 107.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,188 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.02 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,190 INFO L168 Benchmark]: Boogie Preprocessor took 123.68 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 178.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,191 INFO L168 Benchmark]: RCFGBuilder took 289.46 ms. Allocated memory is still 200.8 MB. Free memory was 178.3 MB in the beginning and 164.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,192 INFO L168 Benchmark]: TraceAbstraction took 870.98 ms. Allocated memory is still 200.8 MB. Free memory was 163.3 MB in the beginning and 107.6 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:44,198 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.02 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.68 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 178.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.46 ms. Allocated memory is still 200.8 MB. Free memory was 178.3 MB in the beginning and 164.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 870.98 ms. Allocated memory is still 200.8 MB. Free memory was 163.3 MB in the beginning and 107.6 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 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...