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/eca-rers2012/Problem10_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 18:59:27,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 18:59:27,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 18:59:27,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 18:59:27,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 18:59:27,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 18:59:27,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 18:59:27,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 18:59:27,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 18:59:27,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 18:59:27,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 18:59:27,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 18:59:27,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 18:59:27,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 18:59:27,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 18:59:27,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 18:59:27,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 18:59:27,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 18:59:27,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 18:59:27,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 18:59:27,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 18:59:27,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 18:59:27,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 18:59:27,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 18:59:27,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 18:59:27,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 18:59:27,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 18:59:27,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 18:59:27,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 18:59:27,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 18:59:27,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 18:59:27,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 18:59:27,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 18:59:27,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 18:59:27,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 18:59:27,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 18:59:27,493 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 [2019-10-02 18:59:27,510 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 18:59:27,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 18:59:27,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 18:59:27,511 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 18:59:27,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 18:59:27,512 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 18:59:27,513 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 18:59:27,513 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 18:59:27,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 18:59:27,513 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 18:59:27,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 18:59:27,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 18:59:27,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 18:59:27,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 18:59:27,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 18:59:27,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 18:59:27,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 18:59:27,516 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 18:59:27,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 18:59:27,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 18:59:27,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 18:59:27,517 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 18:59:27,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 18:59:27,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 18:59:27,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 18:59:27,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 18:59:27,518 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 18:59:27,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 18:59:27,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 18:59:27,519 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 18:59:27,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 18:59:27,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 18:59:27,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 18:59:27,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 18:59:27,581 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 18:59:27,582 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2019-10-02 18:59:27,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e3c1e9/cf47ad93ea78405d8bda658f4012426a/FLAG3b07d73fe [2019-10-02 18:59:28,248 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 18:59:28,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2019-10-02 18:59:28,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e3c1e9/cf47ad93ea78405d8bda658f4012426a/FLAG3b07d73fe [2019-10-02 18:59:28,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e3c1e9/cf47ad93ea78405d8bda658f4012426a [2019-10-02 18:59:28,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 18:59:28,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 18:59:28,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 18:59:28,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 18:59:28,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 18:59:28,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:59:28" (1/1) ... [2019-10-02 18:59:28,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f542093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:28, skipping insertion in model container [2019-10-02 18:59:28,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:59:28" (1/1) ... [2019-10-02 18:59:28,575 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 18:59:28,622 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 18:59:29,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:59:29,176 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 18:59:29,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:59:29,350 INFO L192 MainTranslator]: Completed translation [2019-10-02 18:59:29,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29 WrapperNode [2019-10-02 18:59:29,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 18:59:29,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 18:59:29,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 18:59:29,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 18:59:29,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... [2019-10-02 18:59:29,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 18:59:29,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 18:59:29,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 18:59:29,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 18:59:29,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 18:59:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 18:59:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 18:59:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 18:59:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 18:59:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 18:59:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 18:59:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 18:59:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 18:59:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 18:59:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 18:59:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 18:59:30,813 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 18:59:30,813 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 18:59:30,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:59:30 BoogieIcfgContainer [2019-10-02 18:59:30,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 18:59:30,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 18:59:30,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 18:59:30,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 18:59:30,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 06:59:28" (1/3) ... [2019-10-02 18:59:30,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eebf2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:59:30, skipping insertion in model container [2019-10-02 18:59:30,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:59:29" (2/3) ... [2019-10-02 18:59:30,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eebf2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:59:30, skipping insertion in model container [2019-10-02 18:59:30,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:59:30" (3/3) ... [2019-10-02 18:59:30,824 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2019-10-02 18:59:30,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 18:59:30,843 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 18:59:30,860 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 18:59:30,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 18:59:30,888 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 18:59:30,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 18:59:30,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 18:59:30,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 18:59:30,889 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 18:59:30,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 18:59:30,889 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 18:59:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-02 18:59:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-02 18:59:30,922 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:59:30,923 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:59:30,925 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:59:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:59:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1877810762, now seen corresponding path program 1 times [2019-10-02 18:59:30,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:59:30,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:30,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:59:30,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:30,985 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:59:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:59:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:59:31,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:59:31,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 18:59:31,261 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:59:31,268 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 18:59:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 18:59:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 18:59:31,286 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-02 18:59:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:59:32,346 INFO L93 Difference]: Finished difference Result 362 states and 555 transitions. [2019-10-02 18:59:32,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 18:59:32,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-02 18:59:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:59:32,367 INFO L225 Difference]: With dead ends: 362 [2019-10-02 18:59:32,367 INFO L226 Difference]: Without dead ends: 294 [2019-10-02 18:59:32,371 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 18:59:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-02 18:59:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-02 18:59:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-02 18:59:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-10-02 18:59:32,449 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 31 [2019-10-02 18:59:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:59:32,451 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-10-02 18:59:32,451 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 18:59:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-10-02 18:59:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-02 18:59:32,458 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:59:32,459 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:59:32,459 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:59:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:59:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash 583914154, now seen corresponding path program 1 times [2019-10-02 18:59:32,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:59:32,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:32,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:59:32,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:32,462 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:59:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:59:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:59:32,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:59:32,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 18:59:32,651 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:59:32,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 18:59:32,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 18:59:32,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 18:59:32,655 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2019-10-02 18:59:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:59:33,620 INFO L93 Difference]: Finished difference Result 602 states and 882 transitions. [2019-10-02 18:59:33,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 18:59:33,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-10-02 18:59:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:59:33,626 INFO L225 Difference]: With dead ends: 602 [2019-10-02 18:59:33,626 INFO L226 Difference]: Without dead ends: 602 [2019-10-02 18:59:33,627 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 18:59:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-02 18:59:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 592. [2019-10-02 18:59:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-02 18:59:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 867 transitions. [2019-10-02 18:59:33,702 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 867 transitions. Word has length 113 [2019-10-02 18:59:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:59:33,702 INFO L475 AbstractCegarLoop]: Abstraction has 592 states and 867 transitions. [2019-10-02 18:59:33,702 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 18:59:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 867 transitions. [2019-10-02 18:59:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-02 18:59:33,707 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:59:33,708 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:59:33,708 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:59:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:59:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1247397430, now seen corresponding path program 1 times [2019-10-02 18:59:33,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:59:33,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:33,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:59:33,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:59:33,713 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:59:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:59:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:59:33,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:59:33,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 18:59:33,986 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:59:33,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 18:59:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 18:59:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 18:59:33,987 INFO L87 Difference]: Start difference. First operand 592 states and 867 transitions. Second operand 6 states. [2019-10-02 18:59:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:59:34,957 INFO L93 Difference]: Finished difference Result 902 states and 1343 transitions. [2019-10-02 18:59:34,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 18:59:34,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-10-02 18:59:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:59:34,959 INFO L225 Difference]: With dead ends: 902 [2019-10-02 18:59:34,959 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 18:59:34,960 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 18:59:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 18:59:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 18:59:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 18:59:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 18:59:34,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2019-10-02 18:59:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:59:34,961 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 18:59:34,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 18:59:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 18:59:34,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 18:59:34,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 06:59:34 BoogieIcfgContainer [2019-10-02 18:59:34,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 18:59:34,971 INFO L168 Benchmark]: Toolchain (without parser) took 6411.32 ms. Allocated memory was 137.4 MB in the beginning and 338.7 MB in the end (delta: 201.3 MB). Free memory was 83.8 MB in the beginning and 263.8 MB in the end (delta: -180.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,972 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.84 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 83.6 MB in the beginning and 156.1 MB in the end (delta: -72.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,974 INFO L168 Benchmark]: Boogie Preprocessor took 121.96 ms. Allocated memory is still 198.7 MB. Free memory was 156.1 MB in the beginning and 151.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,975 INFO L168 Benchmark]: RCFGBuilder took 1341.22 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 150.8 MB in the beginning and 167.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,976 INFO L168 Benchmark]: TraceAbstraction took 4151.58 ms. Allocated memory was 218.6 MB in the beginning and 338.7 MB in the end (delta: 120.1 MB). Free memory was 165.8 MB in the beginning and 263.8 MB in the end (delta: -98.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-10-02 18:59:34,980 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 791.84 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 83.6 MB in the beginning and 156.1 MB in the end (delta: -72.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.96 ms. Allocated memory is still 198.7 MB. Free memory was 156.1 MB in the beginning and 151.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1341.22 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 150.8 MB in the beginning and 167.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4151.58 ms. Allocated memory was 218.6 MB in the beginning and 338.7 MB in the end (delta: 120.1 MB). Free memory was 165.8 MB in the beginning and 263.8 MB in the end (delta: -98.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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, 215 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 992 SDslu, 81 SDs, 0 SdLazy, 1716 SolverSat, 383 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 131900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 48/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...