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/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:38,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:38,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:38,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:38,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:38,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:38,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:38,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:38,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:38,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:38,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:38,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:38,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:38,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:38,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:38,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:38,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:38,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:38,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:38,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:38,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:38,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:38,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:38,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:38,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:28:38,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:38,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:38,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:38,595 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 [2019-09-20 13:28:38,611 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:38,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:38,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:38,612 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:38,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:38,613 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:38,613 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:38,614 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:38,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:38,614 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:38,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:38,615 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:38,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:38,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:38,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:38,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:38,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:38,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:38,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:38,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:38,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:38,617 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:38,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:38,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:38,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:38,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:38,618 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:38,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:38,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:38,619 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:38,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:38,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:38,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:38,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:38,683 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:38,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2019-09-20 13:28:38,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720650e30/16d5c36ec6af40c8a85166a2d029517a/FLAG3894b3aee [2019-09-20 13:28:39,226 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:39,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2019-09-20 13:28:39,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720650e30/16d5c36ec6af40c8a85166a2d029517a/FLAG3894b3aee [2019-09-20 13:28:39,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720650e30/16d5c36ec6af40c8a85166a2d029517a [2019-09-20 13:28:39,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:39,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:39,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:39,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:39,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:39,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:39,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a17818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39, skipping insertion in model container [2019-09-20 13:28:39,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:39,634 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:39,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:39,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:39,862 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:39,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:39,894 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:39,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39 WrapperNode [2019-09-20 13:28:39,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:39,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:39,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:39,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:39,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:39,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (1/1) ... [2019-09-20 13:28:40,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:40,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:40,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:40,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:40,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (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 [2019-09-20 13:28:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-09-20 13:28:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:28:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:40,309 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:40,310 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:40,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:40 BoogieIcfgContainer [2019-09-20 13:28:40,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:40,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:40,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:40,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:40,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:39" (1/3) ... [2019-09-20 13:28:40,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e5b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:40, skipping insertion in model container [2019-09-20 13:28:40,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:39" (2/3) ... [2019-09-20 13:28:40,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e5b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:40, skipping insertion in model container [2019-09-20 13:28:40,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:40" (3/3) ... [2019-09-20 13:28:40,319 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2019-09-20 13:28:40,332 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:40,341 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:40,361 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:40,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:40,395 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:40,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:40,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:40,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:40,395 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:40,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:40,396 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-20 13:28:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:28:40,425 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:40,426 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:40,429 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2019-09-20 13:28:40,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:40,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:40,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:40,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:40,485 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:40,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:40,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:40,642 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:40,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:40,663 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-09-20 13:28:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:40,710 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-20 13:28:40,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:28:40,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-20 13:28:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:40,721 INFO L225 Difference]: With dead ends: 22 [2019-09-20 13:28:40,721 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:28:40,723 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:28:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:28:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:28:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-20 13:28:40,754 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2019-09-20 13:28:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:40,755 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-20 13:28:40,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-20 13:28:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:40,756 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:40,756 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:40,757 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2019-09-20 13:28:40,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:40,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:40,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:40,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:40,760 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:40,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:40,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:28:40,906 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:40,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:28:40,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:28:40,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:28:40,909 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-09-20 13:28:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:40,972 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-09-20 13:28:40,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:40,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-20 13:28:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:40,974 INFO L225 Difference]: With dead ends: 16 [2019-09-20 13:28:40,974 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:40,975 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:28:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:40,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:28:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:40,977 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:40,977 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:28:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:40,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:40,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:40 BoogieIcfgContainer [2019-09-20 13:28:40,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:40,986 INFO L168 Benchmark]: Toolchain (without parser) took 1372.03 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 89.3 MB in the beginning and 121.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,988 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.71 ms. Allocated memory is still 133.7 MB. Free memory was 89.1 MB in the beginning and 79.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,990 INFO L168 Benchmark]: Boogie Preprocessor took 122.26 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.3 MB in the beginning and 175.6 MB in the end (delta: -96.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,991 INFO L168 Benchmark]: RCFGBuilder took 293.31 ms. Allocated memory is still 199.8 MB. Free memory was 175.6 MB in the beginning and 160.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,992 INFO L168 Benchmark]: TraceAbstraction took 671.20 ms. Allocated memory is still 199.8 MB. Free memory was 159.6 MB in the beginning and 121.0 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,996 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 133.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.71 ms. Allocated memory is still 133.7 MB. Free memory was 89.1 MB in the beginning and 79.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.26 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.3 MB in the beginning and 175.6 MB in the end (delta: -96.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.31 ms. Allocated memory is still 199.8 MB. Free memory was 175.6 MB in the beginning and 160.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 671.20 ms. Allocated memory is still 199.8 MB. Free memory was 159.6 MB in the beginning and 121.0 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 4 procedures, 22 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 17 SDslu, 74 SDs, 0 SdLazy, 13 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 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...