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/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:45:36,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:45:36,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:45:36,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:45:36,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:45:36,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:45:36,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:45:36,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:45:36,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:45:36,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:45:36,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:45:36,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:45:36,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:45:36,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:45:36,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:45:36,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:45:36,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:45:36,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:45:36,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:45:36,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:45:36,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:45:36,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:45:36,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:45:36,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:45:36,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:45:36,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:45:36,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:45:36,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:45:36,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:45:36,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:45:36,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:45:36,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:45:36,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:45:36,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:45:36,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:45:36,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:45:36,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:45:36,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:45:36,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:45:36,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:45:36,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:45:36,518 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 16:45:36,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:45:36,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:45:36,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:45:36,538 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:45:36,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:45:36,540 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:45:36,540 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:45:36,540 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:45:36,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:45:36,540 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:45:36,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:45:36,541 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:45:36,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:45:36,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:45:36,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:45:36,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:45:36,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:45:36,544 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:45:36,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:45:36,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:45:36,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:45:36,545 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:45:36,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:45:36,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:45:36,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:45:36,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:45:36,546 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:45:36,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:45:36,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:45:36,546 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:45:36,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:45:36,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:45:36,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:45:36,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:45:36,601 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:45:36,602 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2019-10-02 16:45:36,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a756a6f3c/ec7c8e9eb6bc42caaa8b7b351acdce35/FLAGbb1a34563 [2019-10-02 16:45:37,278 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:45:37,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2019-10-02 16:45:37,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a756a6f3c/ec7c8e9eb6bc42caaa8b7b351acdce35/FLAGbb1a34563 [2019-10-02 16:45:37,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a756a6f3c/ec7c8e9eb6bc42caaa8b7b351acdce35 [2019-10-02 16:45:37,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:45:37,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:45:37,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:37,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:45:37,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:45:37,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:37" (1/1) ... [2019-10-02 16:45:37,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e7d651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:37, skipping insertion in model container [2019-10-02 16:45:37,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:37" (1/1) ... [2019-10-02 16:45:37,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:45:37,622 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:45:38,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:38,186 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:45:38,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:38,312 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:45:38,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38 WrapperNode [2019-10-02 16:45:38,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:38,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:45:38,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:45:38,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:45:38,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (1/1) ... [2019-10-02 16:45:38,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:45:38,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:45:38,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:45:38,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:45:38,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (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 16:45:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:45:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:45:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 16:45:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:45:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:45:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:45:39,716 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:45:39,717 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 16:45:39,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:39 BoogieIcfgContainer [2019-10-02 16:45:39,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:45:39,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:45:39,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:45:39,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:45:39,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:45:37" (1/3) ... [2019-10-02 16:45:39,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227e4784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:39, skipping insertion in model container [2019-10-02 16:45:39,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:38" (2/3) ... [2019-10-02 16:45:39,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227e4784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:39, skipping insertion in model container [2019-10-02 16:45:39,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:39" (3/3) ... [2019-10-02 16:45:39,729 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2019-10-02 16:45:39,740 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:45:39,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:45:39,770 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:45:39,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:45:39,801 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:45:39,801 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:45:39,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:45:39,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:45:39,802 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:45:39,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:45:39,802 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:45:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 16:45:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-02 16:45:39,838 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:39,839 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, 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 16:45:39,841 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:39,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:39,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1379021910, now seen corresponding path program 1 times [2019-10-02 16:45:39,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:39,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:39,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:39,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:39,897 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:40,333 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 16:45:40,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:40,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:45:40,336 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:40,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:45:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:45:40,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:45:40,366 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2019-10-02 16:45:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:41,472 INFO L93 Difference]: Finished difference Result 346 states and 505 transitions. [2019-10-02 16:45:41,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:45:41,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-10-02 16:45:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:41,490 INFO L225 Difference]: With dead ends: 346 [2019-10-02 16:45:41,491 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 16:45:41,493 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:45:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 16:45:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 16:45:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 16:45:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-10-02 16:45:41,567 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 98 [2019-10-02 16:45:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:41,568 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-10-02 16:45:41,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:45:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-10-02 16:45:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-02 16:45:41,574 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:41,574 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:45:41,575 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1132011565, now seen corresponding path program 1 times [2019-10-02 16:45:41,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:41,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:41,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:41,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:41,577 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:41,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:41,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:45:41,689 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:41,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:45:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:45:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:45:41,694 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 6 states. [2019-10-02 16:45:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:42,500 INFO L93 Difference]: Finished difference Result 429 states and 635 transitions. [2019-10-02 16:45:42,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:45:42,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-10-02 16:45:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:42,501 INFO L225 Difference]: With dead ends: 429 [2019-10-02 16:45:42,501 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:45:42,502 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 16:45:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:45:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:45:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:45:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:45:42,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-10-02 16:45:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:42,504 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:45:42,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:45:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:45:42,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:45:42,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:45:42 BoogieIcfgContainer [2019-10-02 16:45:42,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:45:42,513 INFO L168 Benchmark]: Toolchain (without parser) took 4982.26 ms. Allocated memory was 141.0 MB in the beginning and 264.8 MB in the end (delta: 123.7 MB). Free memory was 86.5 MB in the beginning and 160.7 MB in the end (delta: -74.2 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,514 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.39 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 86.3 MB in the beginning and 168.3 MB in the end (delta: -82.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,516 INFO L168 Benchmark]: Boogie Preprocessor took 100.97 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 163.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,517 INFO L168 Benchmark]: RCFGBuilder took 1303.98 ms. Allocated memory was 203.4 MB in the beginning and 230.2 MB in the end (delta: 26.7 MB). Free memory was 162.9 MB in the beginning and 178.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,518 INFO L168 Benchmark]: TraceAbstraction took 2790.03 ms. Allocated memory was 230.2 MB in the beginning and 264.8 MB in the end (delta: 34.6 MB). Free memory was 178.0 MB in the beginning and 160.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:45:42,523 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.39 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 86.3 MB in the beginning and 168.3 MB in the end (delta: -82.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.97 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 163.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1303.98 ms. Allocated memory was 203.4 MB in the beginning and 230.2 MB in the end (delta: 26.7 MB). Free memory was 162.9 MB in the beginning and 178.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2790.03 ms. Allocated memory was 230.2 MB in the beginning and 264.8 MB in the end (delta: 34.6 MB). Free memory was 178.0 MB in the beginning and 160.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: 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, 207 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 647 SDslu, 69 SDs, 0 SdLazy, 1182 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 94814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 7/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...