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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:46:10,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:46:10,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:46:10,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 12:46:10,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:46:10,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:46:10,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:46:10,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:46:10,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:46:10,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:46:10,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:46:10,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:46:10,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:46:10,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:46:10,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:46:10,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:46:10,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:46:10,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 12:46:10,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:46:10,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:46:10,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:46:10,594 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:46:10,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:46:10,594 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:46:10,595 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:46:10,595 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:46:10,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:46:10,595 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:46:10,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:46:10,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:46:10,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:46:10,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:46:10,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:46:10,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:46:10,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:46:10,597 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:46:10,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:46:10,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:46:10,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:46:10,598 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:46:10,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:46:10,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:46:10,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:46:10,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:46:10,599 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:46:10,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:46:10,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:46:10,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:46:10,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:46:10,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:46:10,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:46:10,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:46:10,644 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:46:10,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2019-09-05 12:46:10,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6244177/8590eefe922142409569873e026877f3/FLAG65d01fdd9 [2019-09-05 12:46:11,111 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:46:11,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2019-09-05 12:46:11,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6244177/8590eefe922142409569873e026877f3/FLAG65d01fdd9 [2019-09-05 12:46:11,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6244177/8590eefe922142409569873e026877f3 [2019-09-05 12:46:11,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:46:11,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:46:11,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:11,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:46:11,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:46:11,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17114e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11, skipping insertion in model container [2019-09-05 12:46:11,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,554 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:46:11,572 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:46:11,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:11,775 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:46:11,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:11,798 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:46:11,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11 WrapperNode [2019-09-05 12:46:11,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:11,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:46:11,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:46:11,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:46:11,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (1/1) ... [2019-09-05 12:46:11,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:46:11,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:46:11,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:46:11,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:46:11,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (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 [2019-09-05 12:46:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:46:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:46:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:46:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-09-05 12:46:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-09-05 12:46:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:46:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:46:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:46:12,131 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:46:12,131 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:46:12,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:12 BoogieIcfgContainer [2019-09-05 12:46:12,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:46:12,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:46:12,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:46:12,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:46:12,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:46:11" (1/3) ... [2019-09-05 12:46:12,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a15ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:12, skipping insertion in model container [2019-09-05 12:46:12,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:11" (2/3) ... [2019-09-05 12:46:12,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a15ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:12, skipping insertion in model container [2019-09-05 12:46:12,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:12" (3/3) ... [2019-09-05 12:46:12,141 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-09-05 12:46:12,151 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:46:12,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:46:12,179 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:46:12,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:46:12,212 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:46:12,212 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:46:12,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:46:12,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:46:12,213 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:46:12,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:46:12,213 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:46:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-05 12:46:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 12:46:12,233 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:12,233 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:12,235 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-09-05 12:46:12,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:12,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:12,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:12,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:12,283 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:12,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:12,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:46:12,343 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:12,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:46:12,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:46:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:12,359 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-05 12:46:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:12,372 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-09-05 12:46:12,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:46:12,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-05 12:46:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:12,382 INFO L225 Difference]: With dead ends: 24 [2019-09-05 12:46:12,382 INFO L226 Difference]: Without dead ends: 18 [2019-09-05 12:46:12,384 INFO L628 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 [2019-09-05 12:46:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-05 12:46:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-05 12:46:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-05 12:46:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-05 12:46:12,420 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-09-05 12:46:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:12,421 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-05 12:46:12,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:46:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-05 12:46:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 12:46:12,422 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:12,423 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:12,423 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-09-05 12:46:12,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:12,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:12,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:12,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:12,425 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:12,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:12,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:46:12,608 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:12,609 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:46:12,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:46:12,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:46:12,611 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-09-05 12:46:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:12,657 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-09-05 12:46:12,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:46:12,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-05 12:46:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:12,658 INFO L225 Difference]: With dead ends: 16 [2019-09-05 12:46:12,658 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:46:12,659 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-05 12:46:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:46:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:46:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:46:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:46:12,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-09-05 12:46:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:12,661 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:46:12,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:46:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:46:12,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:46:12,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:46:12 BoogieIcfgContainer [2019-09-05 12:46:12,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:46:12,673 INFO L168 Benchmark]: Toolchain (without parser) took 1131.14 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 87.7 MB in the beginning and 138.5 MB in the end (delta: -50.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,674 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 140.0 MB. Free memory was 87.5 MB in the beginning and 77.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,682 INFO L168 Benchmark]: Boogie Preprocessor took 124.00 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 77.9 MB in the beginning and 178.2 MB in the end (delta: -100.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,684 INFO L168 Benchmark]: RCFGBuilder took 209.83 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 166.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,685 INFO L168 Benchmark]: TraceAbstraction took 532.82 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 138.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:12,692 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 140.0 MB. Free memory was 87.5 MB in the beginning and 77.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.00 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 77.9 MB in the beginning and 178.2 MB in the end (delta: -100.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 209.83 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 166.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 532.82 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 138.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 6 SDslu, 41 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...