/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_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:43:29,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:29,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:29,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:29,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:29,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:29,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:29,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:29,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:29,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:29,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:29,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:29,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:29,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:29,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:29,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:29,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:29,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:29,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:29,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:29,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:29,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:29,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:29,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:29,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:43:29,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:29,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:29,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:29,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:43:29,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:29,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:29,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:29,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:29,895 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:29,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:29,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:29,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:29,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:29,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:29,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:29,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:29,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:29,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:29,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:29,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:29,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:29,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:29,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:29,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:29,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:29,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:29,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:29,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:29,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:29,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:29,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:29,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:29,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:29,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:30,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:30,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:30,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:30,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:30,432 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:30,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-09-04 13:43:30,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5692d5231/110a8dc3d8e84a4abca0a6977ca5d9a5/FLAG3f3ab70bd [2020-09-04 13:43:31,070 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:31,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-09-04 13:43:31,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5692d5231/110a8dc3d8e84a4abca0a6977ca5d9a5/FLAG3f3ab70bd [2020-09-04 13:43:31,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5692d5231/110a8dc3d8e84a4abca0a6977ca5d9a5 [2020-09-04 13:43:31,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:31,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:31,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:31,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:31,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:31,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31, skipping insertion in model container [2020-09-04 13:43:31,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:31,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:31,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:31,728 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:31,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:31,761 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:31,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31 WrapperNode [2020-09-04 13:43:31,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:31,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:31,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:31,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:31,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:31,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:31,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:31,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:31,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-04 13:43:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-04 13:43:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:32,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:32,158 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:43:32,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:32 BoogieIcfgContainer [2020-09-04 13:43:32,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:32,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:32,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:32,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:32,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:31" (1/3) ... [2020-09-04 13:43:32,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7c08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:32, skipping insertion in model container [2020-09-04 13:43:32,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (2/3) ... [2020-09-04 13:43:32,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7c08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:32, skipping insertion in model container [2020-09-04 13:43:32,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:32" (3/3) ... [2020-09-04 13:43:32,173 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-09-04 13:43:32,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:32,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:32,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:32,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:32,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:32,264 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:32,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:32,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:32,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:32,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:32,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-09-04 13:43:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:43:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:32,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2020-09-04 13:43:32,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984909833] [2020-09-04 13:43:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984909833] [2020-09-04 13:43:32,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:32,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:43:32,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947180179] [2020-09-04 13:43:32,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:43:32,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:43:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:43:32,568 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-09-04 13:43:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:32,647 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2020-09-04 13:43:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:43:32,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-04 13:43:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:32,661 INFO L225 Difference]: With dead ends: 37 [2020-09-04 13:43:32,661 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 13:43:32,666 INFO L675 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 [2020-09-04 13:43:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 13:43:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-09-04 13:43:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-04 13:43:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-04 13:43:32,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-09-04 13:43:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:32,715 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-04 13:43:32,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:43:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-04 13:43:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:43:32,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:32,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:32,718 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2020-09-04 13:43:32,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172769670] [2020-09-04 13:43:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:43:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172769670] [2020-09-04 13:43:32,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:32,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:43:32,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114520378] [2020-09-04 13:43:32,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:32,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:32,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:32,857 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-09-04 13:43:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:32,979 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-09-04 13:43:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:32,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-04 13:43:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:32,981 INFO L225 Difference]: With dead ends: 17 [2020-09-04 13:43:32,981 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:43:32,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:43:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:43:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:43:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:43:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:43:32,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-04 13:43:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:32,987 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:43:32,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:43:32,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:43:32,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:32,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:43:33,091 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:33,091 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-09-04 13:43:33,092 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:33,092 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-09-04 13:43:33,092 INFO L268 CegarLoopResult]: For program point L14-1(lines 12 19) no Hoare annotation was computed. [2020-09-04 13:43:33,092 INFO L268 CegarLoopResult]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2020-09-04 13:43:33,093 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:33,093 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2020-09-04 13:43:33,093 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:43:33,093 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:33,094 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-04 13:43:33,094 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-09-04 13:43:33,094 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-09-04 13:43:33,095 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-09-04 13:43:33,095 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2020-09-04 13:43:33,095 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2020-09-04 13:43:33,095 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2020-09-04 13:43:33,095 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-04 13:43:33,096 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-04 13:43:33,096 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-04 13:43:33,096 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-04 13:43:33,096 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-04 13:43:33,097 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-04 13:43:33,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:33 BoogieIcfgContainer [2020-09-04 13:43:33,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:33,109 INFO L168 Benchmark]: Toolchain (without parser) took 1660.16 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 123.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:33,110 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:43:33,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.73 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:33,112 INFO L168 Benchmark]: Boogie Preprocessor took 141.40 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.7 MB in the beginning and 183.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:33,113 INFO L168 Benchmark]: RCFGBuilder took 258.86 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 171.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:33,115 INFO L168 Benchmark]: TraceAbstraction took 940.64 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 123.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:33,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.73 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.40 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.7 MB in the beginning and 183.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.86 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 171.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 940.64 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 123.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 23 SDslu, 26 SDs, 0 SdLazy, 14 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 44 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...