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/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:46:11,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:46:11,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:46:11,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 12:46:11,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:46:11,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:46:11,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:46:11,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:46:11,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:46:11,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:46:11,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:46:11,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:46:11,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:46:11,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:46:11,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:46:11,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:46:11,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:46:11,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:46:11,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:46:11,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:46:11,711 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 12:46:11,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:46:11,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:46:11,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:46:11,727 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:46:11,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:46:11,728 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:46:11,728 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:46:11,728 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:46:11,729 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:46:11,729 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:46:11,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:46:11,730 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:46:11,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:46:11,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:46:11,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:46:11,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:46:11,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:46:11,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:46:11,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:46:11,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:46:11,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:46:11,732 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:46:11,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:46:11,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:46:11,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:46:11,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:46:11,733 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:46:11,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:46:11,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:46:11,733 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:46:11,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:46:11,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:46:11,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:46:11,782 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:46:11,783 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:46:11,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2019-09-05 12:46:11,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad336b67/cdcd7e82bb584e84bb8a3c155188c136/FLAGd82456715 [2019-09-05 12:46:12,309 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:46:12,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2019-09-05 12:46:12,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad336b67/cdcd7e82bb584e84bb8a3c155188c136/FLAGd82456715 [2019-09-05 12:46:12,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad336b67/cdcd7e82bb584e84bb8a3c155188c136 [2019-09-05 12:46:12,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:46:12,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:46:12,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:12,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:46:12,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:46:12,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:12,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12, skipping insertion in model container [2019-09-05 12:46:12,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:12,667 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:46:12,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:46:12,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:12,910 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:46:12,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:12,942 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:46:12,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12 WrapperNode [2019-09-05 12:46:12,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:12,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:46:12,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:46:12,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:46:13,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (1/1) ... [2019-09-05 12:46:13,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:46:13,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:46:13,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:46:13,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:46:13,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (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 12:46:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:46:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:46:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:46:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:46:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:46:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:46:13,364 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:46:13,365 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:46:13,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:13 BoogieIcfgContainer [2019-09-05 12:46:13,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:46:13,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:46:13,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:46:13,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:46:13,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:46:12" (1/3) ... [2019-09-05 12:46:13,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb2f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:13, skipping insertion in model container [2019-09-05 12:46:13,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:12" (2/3) ... [2019-09-05 12:46:13,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb2f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:13, skipping insertion in model container [2019-09-05 12:46:13,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:13" (3/3) ... [2019-09-05 12:46:13,391 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2019-09-05 12:46:13,414 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:46:13,422 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:46:13,441 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:46:13,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:46:13,481 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:46:13,481 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:46:13,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:46:13,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:46:13,482 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:46:13,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:46:13,482 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:46:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-05 12:46:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:46:13,506 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:13,507 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:13,509 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2019-09-05 12:46:13,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:13,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:13,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:13,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:13,557 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:13,625 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 12:46:13,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:13,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:46:13,629 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:13,634 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:46:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:46:13,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:13,649 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-05 12:46:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:13,665 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-05 12:46:13,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:46:13,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 12:46:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:13,674 INFO L225 Difference]: With dead ends: 21 [2019-09-05 12:46:13,675 INFO L226 Difference]: Without dead ends: 14 [2019-09-05 12:46:13,677 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 12:46:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-05 12:46:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-05 12:46:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-05 12:46:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-09-05 12:46:13,720 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-09-05 12:46:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:13,720 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-09-05 12:46:13,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:46:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-09-05 12:46:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:46:13,723 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:13,723 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:13,724 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2019-09-05 12:46:13,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:13,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:13,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:13,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:13,730 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:46:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:46:13,855 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-05 12:46:13,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:46:13 BoogieIcfgContainer [2019-09-05 12:46:13,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:46:13,877 INFO L168 Benchmark]: Toolchain (without parser) took 1228.22 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 86.3 MB in the beginning and 143.4 MB in the end (delta: -57.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,878 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.57 ms. Allocated memory is still 137.4 MB. Free memory was 86.1 MB in the beginning and 76.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,880 INFO L168 Benchmark]: Boogie Preprocessor took 129.70 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 76.6 MB in the beginning and 177.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,881 INFO L168 Benchmark]: RCFGBuilder took 296.34 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 164.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,882 INFO L168 Benchmark]: TraceAbstraction took 501.64 ms. Allocated memory is still 199.8 MB. Free memory was 164.3 MB in the beginning and 143.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:13,886 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.57 ms. Allocated memory is still 137.4 MB. Free memory was 86.1 MB in the beginning and 76.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.70 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 76.6 MB in the beginning and 177.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.34 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 164.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 501.64 ms. Allocated memory is still 199.8 MB. Free memory was 164.3 MB in the beginning and 143.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L16] unsigned int d1=1, d2=1, d3=1; [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=2, c2=3, d1=1, d2=1, d3=1, x1=0, x2=0, x3=1] [L28] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...