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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:05,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:05,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:05,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:05,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:05,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:05,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:05,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:05,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:05,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:05,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:05,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:05,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:05,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:05,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:05,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:05,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:05,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:05,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:05,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:05,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:05,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:05,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:05,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:17:05,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:05,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:05,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:05,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:17:05,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:05,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:05,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:05,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:05,834 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:05,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:05,835 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:05,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:05,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:05,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:05,836 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:05,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:05,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:05,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:05,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:05,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:05,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:05,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:05,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:05,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:05,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:05,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:05,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:05,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:06,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:06,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:06,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:06,126 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:06,127 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:06,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-10-14 23:17:06,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f818351/28532521ab5248e2b40aeae27e342147/FLAGd6027f477 [2019-10-14 23:17:06,650 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:06,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-10-14 23:17:06,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f818351/28532521ab5248e2b40aeae27e342147/FLAGd6027f477 [2019-10-14 23:17:07,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f818351/28532521ab5248e2b40aeae27e342147 [2019-10-14 23:17:07,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:07,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:07,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:07,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:07,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa71a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,137 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:07,153 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:07,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,340 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:07,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,363 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:07,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07 WrapperNode [2019-10-14 23:17:07,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:07,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:07,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:07,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:07,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:07,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (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 [2019-10-14 23:17:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:07,652 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:07,653 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:07,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:07 BoogieIcfgContainer [2019-10-14 23:17:07,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:07,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:07,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:07,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:07,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:07" (1/3) ... [2019-10-14 23:17:07,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379945d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (2/3) ... [2019-10-14 23:17:07,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379945d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:07" (3/3) ... [2019-10-14 23:17:07,662 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2019-10-14 23:17:07,672 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:07,679 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:07,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:07,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:07,715 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:07,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:07,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:07,716 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:07,716 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:07,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:07,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-14 23:17:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:07,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:07,739 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:07,741 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-10-14 23:17:07,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:07,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206904313] [2019-10-14 23:17:07,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:07,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206904313] [2019-10-14 23:17:07,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:07,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:07,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678936804] [2019-10-14 23:17:07,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:07,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:07,864 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-14 23:17:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:07,886 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2019-10-14 23:17:07,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:07,888 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:07,896 INFO L225 Difference]: With dead ends: 26 [2019-10-14 23:17:07,897 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:17:07,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:17:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:17:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:17:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-14 23:17:07,938 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-10-14 23:17:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:07,938 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-14 23:17:07,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-14 23:17:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:07,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:07,939 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:07,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-10-14 23:17:07,941 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:07,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651983659] [2019-10-14 23:17:07,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:08,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651983659] [2019-10-14 23:17:08,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:08,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:08,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108944342] [2019-10-14 23:17:08,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:08,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:08,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:08,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:08,151 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-10-14 23:17:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:08,203 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-14 23:17:08,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:08,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:17:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:08,205 INFO L225 Difference]: With dead ends: 13 [2019-10-14 23:17:08,205 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:08,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:08,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-14 23:17:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:08,209 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:08,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:08,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:08,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:08,242 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,243 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,244 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,244 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,244 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2019-10-14 23:17:08,244 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2019-10-14 23:17:08,245 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2019-10-14 23:17:08,245 INFO L439 ceAbstractionStarter]: At program point L14-1(lines 12 15) the Hoare annotation is: (= main_~x~0 0) [2019-10-14 23:17:08,245 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2019-10-14 23:17:08,245 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 15) the Hoare annotation is: false [2019-10-14 23:17:08,246 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:17:08,246 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,246 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,246 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,247 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:17:08,247 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:08 BoogieIcfgContainer [2019-10-14 23:17:08,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:08,266 INFO L168 Benchmark]: Toolchain (without parser) took 1144.70 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 103.0 MB in the beginning and 141.7 MB in the end (delta: -38.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,268 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-14 23:17:08,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.14 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,273 INFO L168 Benchmark]: Boogie Preprocessor took 108.50 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,276 INFO L168 Benchmark]: RCFGBuilder took 181.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 172.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,278 INFO L168 Benchmark]: TraceAbstraction took 607.28 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 141.7 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,288 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.14 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.50 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 181.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 172.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 607.28 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 141.7 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...