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/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:46:15,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:46:15,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:46:15,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:46:15,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:46:15,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:46:15,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:46:15,334 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 [2019-09-10 01:46:15,349 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:46:15,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:46:15,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:46:15,349 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:46:15,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:46:15,350 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:46:15,351 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:46:15,351 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:46:15,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:46:15,351 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:46:15,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:46:15,352 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:46:15,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:46:15,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:46:15,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:46:15,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:46:15,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:46:15,353 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:46:15,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:46:15,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:46:15,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:46:15,354 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:46:15,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:46:15,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:46:15,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:46:15,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:46:15,355 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:46:15,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:46:15,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:46:15,356 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:46:15,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:46:15,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:46:15,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:46:15,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:46:15,416 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:46:15,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-09-10 01:46:15,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f84bb190/d969811bf0c0498f96a6c43e284e07da/FLAG41a7353a6 [2019-09-10 01:46:15,906 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:46:15,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-09-10 01:46:15,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f84bb190/d969811bf0c0498f96a6c43e284e07da/FLAG41a7353a6 [2019-09-10 01:46:16,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f84bb190/d969811bf0c0498f96a6c43e284e07da [2019-09-10 01:46:16,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:46:16,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:46:16,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:16,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:46:16,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:46:16,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6c6cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16, skipping insertion in model container [2019-09-10 01:46:16,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,356 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:46:16,378 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:46:16,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:16,587 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:46:16,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:16,627 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:46:16,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16 WrapperNode [2019-09-10 01:46:16,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:16,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:46:16,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:46:16,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:46:16,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (1/1) ... [2019-09-10 01:46:16,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:46:16,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:46:16,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:46:16,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:46:16,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (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 [2019-09-10 01:46:16,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:46:16,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:46:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-09-10 01:46:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:46:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:46:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:46:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 01:46:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-09-10 01:46:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:46:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:46:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 01:46:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:46:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:46:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:46:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:46:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:46:17,093 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:46:17,093 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:46:17,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:17 BoogieIcfgContainer [2019-09-10 01:46:17,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:46:17,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:46:17,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:46:17,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:46:17,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:46:16" (1/3) ... [2019-09-10 01:46:17,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ed2f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:17, skipping insertion in model container [2019-09-10 01:46:17,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:16" (2/3) ... [2019-09-10 01:46:17,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ed2f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:17, skipping insertion in model container [2019-09-10 01:46:17,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:17" (3/3) ... [2019-09-10 01:46:17,111 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-09-10 01:46:17,132 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:46:17,146 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:46:17,175 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:46:17,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:46:17,201 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:46:17,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:46:17,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:46:17,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:46:17,202 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:46:17,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:46:17,202 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:46:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-10 01:46:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:46:17,228 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:17,229 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:17,231 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash -722462527, now seen corresponding path program 1 times [2019-09-10 01:46:17,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:17,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:17,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,286 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:17,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:17,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:46:17,467 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:17,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:46:17,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:46:17,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:46:17,490 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-09-10 01:46:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:17,569 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-10 01:46:17,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:46:17,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-10 01:46:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:17,583 INFO L225 Difference]: With dead ends: 23 [2019-09-10 01:46:17,584 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:46:17,588 INFO L628 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 [2019-09-10 01:46:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:46:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:46:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:46:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-10 01:46:17,642 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-09-10 01:46:17,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:17,643 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-10 01:46:17,643 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:46:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-10 01:46:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:46:17,645 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:17,646 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:17,646 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1499811687, now seen corresponding path program 1 times [2019-09-10 01:46:17,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:17,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,650 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:17,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:17,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:46:17,845 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:17,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:46:17,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:46:17,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:46:17,848 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2019-09-10 01:46:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:17,901 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-10 01:46:17,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:46:17,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-10 01:46:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:17,903 INFO L225 Difference]: With dead ends: 19 [2019-09-10 01:46:17,903 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:46:17,905 INFO L628 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 [2019-09-10 01:46:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:46:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:46:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:46:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-10 01:46:17,909 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2019-09-10 01:46:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:17,909 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-10 01:46:17,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:46:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-10 01:46:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:46:17,911 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:17,911 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:17,911 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash -750476091, now seen corresponding path program 1 times [2019-09-10 01:46:17,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:17,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:17,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:17,913 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:17,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:17,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:46:17,998 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:17,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:46:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:46:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:46:18,000 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2019-09-10 01:46:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:18,022 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-10 01:46:18,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:46:18,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-10 01:46:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:18,023 INFO L225 Difference]: With dead ends: 17 [2019-09-10 01:46:18,023 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:46:18,023 INFO L628 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 [2019-09-10 01:46:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:46:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:46:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:46:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:46:18,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-10 01:46:18,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:18,025 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:46:18,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:46:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:46:18,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:46:18,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:46:18 BoogieIcfgContainer [2019-09-10 01:46:18,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:46:18,036 INFO L168 Benchmark]: Toolchain (without parser) took 1695.86 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 89.7 MB in the beginning and 112.8 MB in the end (delta: -23.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,037 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 79.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,039 INFO L168 Benchmark]: Boogie Preprocessor took 125.65 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.9 MB in the beginning and 176.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,040 INFO L168 Benchmark]: RCFGBuilder took 340.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 160.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,043 INFO L168 Benchmark]: TraceAbstraction took 934.10 ms. Allocated memory is still 200.8 MB. Free memory was 160.9 MB in the beginning and 112.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:18,049 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 79.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.65 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.9 MB in the beginning and 176.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 160.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 934.10 ms. Allocated memory is still 200.8 MB. Free memory was 160.9 MB in the beginning and 112.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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, 23 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 23 SDslu, 106 SDs, 0 SdLazy, 20 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...