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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:05,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:05,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:05,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:05,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:05,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:05,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:05,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:05,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:05,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:05,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:05,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:05,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:05,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:05,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:05,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:05,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:05,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:05,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:05,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:05,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:05,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:05,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:05,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:05,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:17:05,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:05,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:05,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:05,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:05,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:05,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:05,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:05,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:05,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:05,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:05,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:05,952 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 23:17:05,968 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:05,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:05,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:05,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:05,970 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:05,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:05,970 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:05,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:05,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:05,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:05,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:05,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:05,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:05,972 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:05,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:05,972 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:05,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:05,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:05,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:05,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:05,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:05,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:05,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:05,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:05,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:05,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:05,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:05,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:05,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:06,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:06,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:06,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:06,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:06,293 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:06,294 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-10-14 23:17:06,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce0676f1/7dd0a82d77f64725b2eec01f8903378b/FLAG3173dbe41 [2019-10-14 23:17:06,824 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:06,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-10-14 23:17:06,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce0676f1/7dd0a82d77f64725b2eec01f8903378b/FLAG3173dbe41 [2019-10-14 23:17:07,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce0676f1/7dd0a82d77f64725b2eec01f8903378b [2019-10-14 23:17:07,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:07,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:07,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:07,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:07,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c31864b 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 23:17:07,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,245 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:07,266 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:07,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,462 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:07,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,496 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:07,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07 WrapperNode [2019-10-14 23:17:07,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:07,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:07,599 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 23:17:07,600 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 23:17:07,603 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 23:17:07,604 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 23:17:07,607 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 23:17:07,611 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 23:17:07,612 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 23:17:07,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:07,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:07,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:07,614 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 23:17:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:07,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:07,794 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:07,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:07 BoogieIcfgContainer [2019-10-14 23:17:07,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:07,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:07,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:07,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:07,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:07" (1/3) ... [2019-10-14 23:17:07,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34369142 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 23:17:07,803 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 23:17:07,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34369142 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 23:17:07,804 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 23:17:07,805 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2019-10-14 23:17:07,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:07,819 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:07,829 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:07,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:07,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:07,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:07,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:07,855 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:07,855 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:07,855 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:07,855 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-14 23:17:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:07,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:07,879 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:07,881 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-10-14 23:17:07,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:07,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913324818] [2019-10-14 23:17:07,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,988 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 23:17:07,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913324818] [2019-10-14 23:17:07,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:07,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:07,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344706343] [2019-10-14 23:17:07,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:07,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:08,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:08,010 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-14 23:17:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:08,033 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2019-10-14 23:17:08,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:08,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:08,042 INFO L225 Difference]: With dead ends: 26 [2019-10-14 23:17:08,042 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:17:08,045 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 23:17:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:17:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:17:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:17:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-14 23:17:08,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-10-14 23:17:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:08,079 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-14 23:17:08,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-14 23:17:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:08,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:08,080 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:08,080 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-10-14 23:17:08,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:08,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884884525] [2019-10-14 23:17:08,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:08,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:08,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,217 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 23:17:08,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884884525] [2019-10-14 23:17:08,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:08,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:08,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686194960] [2019-10-14 23:17:08,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:08,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:08,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:08,223 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-10-14 23:17:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:08,271 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-14 23:17:08,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:08,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:17:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:08,274 INFO L225 Difference]: With dead ends: 13 [2019-10-14 23:17:08,274 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:08,275 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:08,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-14 23:17:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:08,278 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:08,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:08,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:08,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:08,386 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,387 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,388 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,389 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,389 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,389 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,389 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2019-10-14 23:17:08,389 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2019-10-14 23:17:08,390 INFO L439 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2019-10-14 23:17:08,390 INFO L439 ceAbstractionStarter]: At program point L15-1(lines 13 16) the Hoare annotation is: (= main_~x~0 0) [2019-10-14 23:17:08,392 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2019-10-14 23:17:08,392 INFO L439 ceAbstractionStarter]: At program point L13-2(lines 13 16) the Hoare annotation is: false [2019-10-14 23:17:08,392 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:17:08,392 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,392 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,393 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:17:08,393 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,393 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:08 BoogieIcfgContainer [2019-10-14 23:17:08,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:08,413 INFO L168 Benchmark]: Toolchain (without parser) took 1187.87 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 137.3 MB in the end (delta: -36.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,414 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.11 ms. Allocated memory is still 135.3 MB. Free memory was 100.1 MB in the beginning and 91.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,416 INFO L168 Benchmark]: Boogie Preprocessor took 114.19 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 177.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,419 INFO L168 Benchmark]: RCFGBuilder took 182.18 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 168.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,420 INFO L168 Benchmark]: TraceAbstraction took 612.29 ms. Allocated memory is still 199.2 MB. Free memory was 167.9 MB in the beginning and 137.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,431 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.11 ms. Allocated memory is still 135.3 MB. Free memory was 100.1 MB in the beginning and 91.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.19 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 177.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 182.18 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 168.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 612.29 ms. Allocated memory is still 199.2 MB. Free memory was 167.9 MB in the beginning and 137.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 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: 13]: 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: 0.1s, 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, 0.0s 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, 0.1s 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...