/usr/bin/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_4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:25:33,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:25:33,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:25:33,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:25:33,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:25:33,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:25:33,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:25:33,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:25:33,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:25:33,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:25:33,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:25:33,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:25:33,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:25:33,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:25:33,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:25:33,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:25:33,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:25:33,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:25:33,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:25:33,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:25:33,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:25:33,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:25:33,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:25:33,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:25:33,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:25:33,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:25:33,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:25:33,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:25:33,750 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 [2019-11-06 21:25:33,763 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:25:33,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:25:33,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:25:33,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:25:33,765 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:25:33,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:25:33,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:25:33,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:25:33,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:25:33,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:25:33,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:25:33,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:25:33,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:25:33,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:25:33,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:25:33,769 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:25:33,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:25:33,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:25:33,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:25:33,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:25:33,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:25:33,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:25:33,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:25:33,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:25:33,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:25:33,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:25:33,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:25:33,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:25:33,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:25:34,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:25:34,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:25:34,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:25:34,084 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:25:34,084 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:25:34,085 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c [2019-11-06 21:25:34,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b777b64e7/4201c5696b8b415abf66c74f62b70178/FLAG065b7264a [2019-11-06 21:25:34,603 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:25:34,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c [2019-11-06 21:25:34,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b777b64e7/4201c5696b8b415abf66c74f62b70178/FLAG065b7264a [2019-11-06 21:25:34,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b777b64e7/4201c5696b8b415abf66c74f62b70178 [2019-11-06 21:25:34,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:25:34,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:25:34,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:34,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:25:34,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:25:34,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:34" (1/1) ... [2019-11-06 21:25:34,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f6a27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:34, skipping insertion in model container [2019-11-06 21:25:34,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:34" (1/1) ... [2019-11-06 21:25:34,995 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:25:35,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:25:35,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:35,207 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:25:35,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:35,234 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:25:35,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35 WrapperNode [2019-11-06 21:25:35,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:35,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:25:35,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:25:35,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:25:35,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (1/1) ... [2019-11-06 21:25:35,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:25:35,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:25:35,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:25:35,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:25:35,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (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 [2019-11-06 21:25:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:25:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:25:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:25:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-06 21:25:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:25:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:25:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:25:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-06 21:25:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:25:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:25:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:25:35,530 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:25:35,530 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:25:35,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:35 BoogieIcfgContainer [2019-11-06 21:25:35,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:25:35,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:25:35,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:25:35,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:25:35,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:25:34" (1/3) ... [2019-11-06 21:25:35,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5007435f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:35, skipping insertion in model container [2019-11-06 21:25:35,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:35" (2/3) ... [2019-11-06 21:25:35,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5007435f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:35, skipping insertion in model container [2019-11-06 21:25:35,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:35" (3/3) ... [2019-11-06 21:25:35,541 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-11-06 21:25:35,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:25:35,559 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:25:35,572 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:25:35,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:25:35,600 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:25:35,600 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:25:35,600 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:25:35,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:25:35,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:25:35,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:25:35,602 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:25:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-06 21:25:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:25:35,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:35,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:35,639 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2019-11-06 21:25:35,673 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:35,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394993457] [2019-11-06 21:25:35,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:35,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394993457] [2019-11-06 21:25:35,837 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:35,837 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:25:35,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078146563] [2019-11-06 21:25:35,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:25:35,842 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:35,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:25:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:25:35,856 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-06 21:25:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:35,934 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2019-11-06 21:25:35,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:25:35,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-06 21:25:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:35,945 INFO L225 Difference]: With dead ends: 37 [2019-11-06 21:25:35,946 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:25:35,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:25:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:25:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-11-06 21:25:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-06 21:25:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-06 21:25:35,988 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-06 21:25:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:35,988 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-06 21:25:35,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:25:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-06 21:25:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:25:35,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:35,990 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:35,990 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2019-11-06 21:25:35,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:35,992 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304434488] [2019-11-06 21:25:35,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:36,040 INFO L172 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-06 21:25:36,040 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-06 21:25:36,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:25:36 BoogieIcfgContainer [2019-11-06 21:25:36,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:25:36,062 INFO L168 Benchmark]: Toolchain (without parser) took 1081.19 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 142.6 MB in the end (delta: -41.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,063 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.06 ms. Allocated memory is still 136.3 MB. Free memory was 100.9 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,065 INFO L168 Benchmark]: Boogie Preprocessor took 103.78 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,066 INFO L168 Benchmark]: RCFGBuilder took 192.09 ms. Allocated memory is still 199.8 MB. Free memory was 179.1 MB in the beginning and 168.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,067 INFO L168 Benchmark]: TraceAbstraction took 525.95 ms. Allocated memory is still 199.8 MB. Free memory was 168.2 MB in the beginning and 142.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:36,070 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.06 ms. Allocated memory is still 136.3 MB. Free memory was 100.9 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.78 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 192.09 ms. Allocated memory is still 199.8 MB. Free memory was 179.1 MB in the beginning and 168.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 525.95 ms. Allocated memory is still 199.8 MB. Free memory was 168.2 MB in the beginning and 142.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; VAL [\old(x)=1, x=0] [L24] COND TRUE 1 VAL [\old(x)=0, x=0] [L26] CALL eval() VAL [\old(x)=0, x=0] [L14] COND TRUE 1 [L15] x=1 VAL [\old(x)=0, x=1] [L26] RET eval() VAL [\old(x)=0, x=1] [L27] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 6 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...