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/array-tiling/rewnifrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:36,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:36,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:36,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:36,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:36,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:36,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:36,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:36,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:36,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:36,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:36,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:36,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:36,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:36,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:36,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:36,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:36,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:36,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:36,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:36,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:36,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:36,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:36,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:36,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:36,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:36,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:36,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:36,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:36,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:36,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:36,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:36,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:36,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:36,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:36,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:36,759 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 16:30:36,778 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:36,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:36,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:36,779 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:36,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:36,779 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:36,780 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:36,780 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:36,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:36,780 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:36,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:36,781 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:36,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:36,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:36,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:36,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:36,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:36,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:36,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:36,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:36,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:36,783 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:36,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:36,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:36,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:36,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:36,784 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:36,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:36,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:36,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:36,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:36,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:36,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:36,849 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:36,851 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:36,852 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev.c [2019-10-02 16:30:36,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa238387/8e7b34d82bd048cd92b91bf0711bc08f/FLAG522ef4902 [2019-10-02 16:30:37,370 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:37,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev.c [2019-10-02 16:30:37,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa238387/8e7b34d82bd048cd92b91bf0711bc08f/FLAG522ef4902 [2019-10-02 16:30:37,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa238387/8e7b34d82bd048cd92b91bf0711bc08f [2019-10-02 16:30:37,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:37,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:37,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:37,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:37,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:37,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:37" (1/1) ... [2019-10-02 16:30:37,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1f4eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:37, skipping insertion in model container [2019-10-02 16:30:37,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:37" (1/1) ... [2019-10-02 16:30:37,770 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:37,787 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:37,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:37,982 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:38,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:38,018 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:38,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38 WrapperNode [2019-10-02 16:30:38,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:38,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:38,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:38,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:38,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (1/1) ... [2019-10-02 16:30:38,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:38,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:38,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:38,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:38,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (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 16:30:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:30:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:30:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:38,463 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:38,463 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:38,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:38 BoogieIcfgContainer [2019-10-02 16:30:38,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:38,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:38,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:38,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:38,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:37" (1/3) ... [2019-10-02 16:30:38,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320d9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:38, skipping insertion in model container [2019-10-02 16:30:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:38" (2/3) ... [2019-10-02 16:30:38,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320d9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:38, skipping insertion in model container [2019-10-02 16:30:38,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:38" (3/3) ... [2019-10-02 16:30:38,473 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnifrev.c [2019-10-02 16:30:38,483 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:38,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:38,509 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:38,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:38,545 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:38,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:38,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:38,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:38,546 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:38,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:38,546 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-02 16:30:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 16:30:38,567 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:38,568 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:38,570 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:38,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:38,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1294486485, now seen corresponding path program 1 times [2019-10-02 16:30:38,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:38,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:38,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:38,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:38,627 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:38,726 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 16:30:38,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:38,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:38,728 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:38,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:38,753 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-02 16:30:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:38,767 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-02 16:30:38,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:38,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-02 16:30:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:38,779 INFO L225 Difference]: With dead ends: 27 [2019-10-02 16:30:38,779 INFO L226 Difference]: Without dead ends: 22 [2019-10-02 16:30:38,781 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-02 16:30:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-02 16:30:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-02 16:30:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-02 16:30:38,821 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2019-10-02 16:30:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:38,822 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-02 16:30:38,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-02 16:30:38,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 16:30:38,823 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:38,823 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:38,824 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:38,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1653126776, now seen corresponding path program 1 times [2019-10-02 16:30:38,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:38,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:38,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:38,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:38,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:38,898 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 16:30:38,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:38,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:38,902 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:38,904 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:38,905 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2019-10-02 16:30:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:39,005 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-10-02 16:30:39,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:39,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-02 16:30:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:39,008 INFO L225 Difference]: With dead ends: 26 [2019-10-02 16:30:39,008 INFO L226 Difference]: Without dead ends: 26 [2019-10-02 16:30:39,009 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:30:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-02 16:30:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-10-02 16:30:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-02 16:30:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-02 16:30:39,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2019-10-02 16:30:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:39,017 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-02 16:30:39,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-02 16:30:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:30:39,018 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:39,019 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:39,020 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1007604157, now seen corresponding path program 1 times [2019-10-02 16:30:39,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:39,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:39,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,024 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:39,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:39,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:39,138 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:39,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:39,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:39,140 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-10-02 16:30:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:39,192 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-10-02 16:30:39,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:39,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-02 16:30:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:39,196 INFO L225 Difference]: With dead ends: 31 [2019-10-02 16:30:39,196 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:30:39,197 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:30:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:30:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-10-02 16:30:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-02 16:30:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-02 16:30:39,209 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2019-10-02 16:30:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:39,210 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-02 16:30:39,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-02 16:30:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:39,211 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:39,211 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:39,211 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:39,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2051596356, now seen corresponding path program 1 times [2019-10-02 16:30:39,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:39,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:39,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,214 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:39,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:39,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-02 16:30:39,556 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:39,557 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 16:30:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 16:30:39,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-02 16:30:39,558 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 10 states. [2019-10-02 16:30:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:39,760 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2019-10-02 16:30:39,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 16:30:39,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-10-02 16:30:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:39,775 INFO L225 Difference]: With dead ends: 37 [2019-10-02 16:30:39,775 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 16:30:39,776 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-02 16:30:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 16:30:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-10-02 16:30:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-02 16:30:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-10-02 16:30:39,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2019-10-02 16:30:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:39,782 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-10-02 16:30:39,782 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 16:30:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-10-02 16:30:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-02 16:30:39,783 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:39,783 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] [2019-10-02 16:30:39,783 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash -730987952, now seen corresponding path program 1 times [2019-10-02 16:30:39,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:39,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:39,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:39,786 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:40,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:40,072 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:40,073 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2019-10-02 16:30:40,075 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [19], [21], [23], [25], [29], [37], [39], [41], [50], [53], [55], [58], [60], [61], [62], [63], [65], [66] [2019-10-02 16:30:40,122 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:40,122 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:40,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:40,201 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 25 variables. [2019-10-02 16:30:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:40,206 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:40,282 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-02 16:30:40,283 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:40,304 INFO L420 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-10-02 16:30:40,304 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:40,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:40,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-02 16:30:40,307 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:40,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:40,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:40,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:40,309 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2019-10-02 16:30:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:40,312 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:40,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:40,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-02 16:30:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:40,313 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:40,314 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:40,314 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 16:30:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:40,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-02 16:30:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:40,316 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:40,316 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:40,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:40,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:40 BoogieIcfgContainer [2019-10-02 16:30:40,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:40,327 INFO L168 Benchmark]: Toolchain (without parser) took 2570.61 ms. Allocated memory was 132.1 MB in the beginning and 221.8 MB in the end (delta: 89.7 MB). Free memory was 87.9 MB in the beginning and 154.5 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,328 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.79 ms. Allocated memory is still 132.1 MB. Free memory was 87.7 MB in the beginning and 77.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,333 INFO L168 Benchmark]: Boogie Preprocessor took 120.14 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 77.7 MB in the beginning and 175.0 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,335 INFO L168 Benchmark]: RCFGBuilder took 324.58 ms. Allocated memory is still 199.2 MB. Free memory was 175.0 MB in the beginning and 160.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,336 INFO L168 Benchmark]: TraceAbstraction took 1856.74 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 159.6 MB in the beginning and 154.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:40,345 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.79 ms. Allocated memory is still 132.1 MB. Free memory was 87.7 MB in the beginning and 77.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.14 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 77.7 MB in the beginning and 175.0 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.58 ms. Allocated memory is still 199.2 MB. Free memory was 175.0 MB in the beginning and 160.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1856.74 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 159.6 MB in the beginning and 154.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 27 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 47 SDslu, 94 SDs, 0 SdLazy, 118 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9741379310344828 AbsIntWeakeningRatio, 0.7241379310344828 AbsIntAvgWeakeningVarsNumRemoved, 0.7586206896551724 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 9462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 13/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...