/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:16:00,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:16:00,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:16:00,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:16:00,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:16:00,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:16:00,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:16:00,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:16:00,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:16:00,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:16:00,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:16:00,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:16:00,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:16:00,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:16:00,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:16:00,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:16:00,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:16:00,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:16:00,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:16:00,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:16:00,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:16:00,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:16:00,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:16:00,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:16:00,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:16:00,845 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:16:00,845 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:16:01,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:16:01,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:16:01,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:16:01,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:16:01,185 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:16:01,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2021-05-02 23:16:01,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc51c0d67/65b286b239b247e4b2e418ac82af4d3b/FLAGdcb3f764c [2021-05-02 23:16:01,745 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:16:01,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2021-05-02 23:16:01,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc51c0d67/65b286b239b247e4b2e418ac82af4d3b/FLAGdcb3f764c [2021-05-02 23:16:02,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc51c0d67/65b286b239b247e4b2e418ac82af4d3b [2021-05-02 23:16:02,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:16:02,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:16:02,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:16:02,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:16:02,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:16:02,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02, skipping insertion in model container [2021-05-02 23:16:02,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:16:02,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:16:02,301 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c[333,346] [2021-05-02 23:16:02,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:16:02,316 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:16:02,327 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c[333,346] [2021-05-02 23:16:02,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:16:02,340 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:16:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02 WrapperNode [2021-05-02 23:16:02,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:16:02,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:16:02,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:16:02,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:16:02,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (1/1) ... [2021-05-02 23:16:02,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:16:02,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:16:02,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:16:02,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:16:02,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (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 [2021-05-02 23:16:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:16:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:16:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:16:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:16:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:16:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:16:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:16:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:16:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:16:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:16:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:16:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:16:02,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:16:02,779 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:16:02,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:16:02 BoogieIcfgContainer [2021-05-02 23:16:02,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:16:02,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:16:02,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:16:02,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:16:02,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:16:02" (1/3) ... [2021-05-02 23:16:02,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46202f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:16:02, skipping insertion in model container [2021-05-02 23:16:02,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:16:02" (2/3) ... [2021-05-02 23:16:02,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46202f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:16:02, skipping insertion in model container [2021-05-02 23:16:02,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:16:02" (3/3) ... [2021-05-02 23:16:02,793 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2021-05-02 23:16:02,814 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:16:02,818 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:16:02,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:16:02,871 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:16:02,871 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:16:02,871 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:16:02,872 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:16:02,872 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:16:02,872 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:16:02,872 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:16:02,872 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:16:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 23:16:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:16:02,892 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:16:02,893 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:16:02,894 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:16:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:16:02,899 INFO L82 PathProgramCache]: Analyzing trace with hash 612371967, now seen corresponding path program 1 times [2021-05-02 23:16:02,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:16:02,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378249363] [2021-05-02 23:16:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:16:02,963 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:16:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:16:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:16:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:16:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:16:03,329 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:16:03,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378249363] [2021-05-02 23:16:03,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [378249363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:16:03,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:16:03,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:16:03,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574923667] [2021-05-02 23:16:03,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:16:03,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:16:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:16:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:16:03,351 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:16:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:16:03,657 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-05-02 23:16:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:16:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:16:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:16:03,667 INFO L225 Difference]: With dead ends: 25 [2021-05-02 23:16:03,667 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:16:03,674 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 328.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:16:03,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:16:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:16:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 23:16:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:16:03,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-02 23:16:03,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:16:03,695 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:16:03,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:16:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:16:03,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:16:03,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:16:03,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:16:03,982 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 23:16:03,997 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 23:16:03,997 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 23:16:03,997 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:16:03,998 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 23:16:03,998 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:16:03,998 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2021-05-02 23:16:03,998 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:16:03,998 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:16:03,998 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2021-05-02 23:16:03,998 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2021-05-02 23:16:03,998 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 11 20) the Hoare annotation is: false [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= main_~x~0 0) [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point L16-1(lines 14 17) the Hoare annotation is: (= main_~x~0 0) [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 11 20) the Hoare annotation is: false [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point L14-2(lines 14 17) the Hoare annotation is: false [2021-05-02 23:16:03,999 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:16:03,999 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:16:04,000 INFO L194 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:16:04,000 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:16:04,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:16:04 BoogieIcfgContainer [2021-05-02 23:16:04,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:16:04,016 INFO L168 Benchmark]: Toolchain (without parser) took 1857.33 ms. Allocated memory is still 184.5 MB. Free memory was 150.4 MB in the beginning and 129.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. [2021-05-02 23:16:04,017 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 184.5 MB. Free memory is still 167.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:16:04,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.32 ms. Allocated memory is still 184.5 MB. Free memory was 150.2 MB in the beginning and 141.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:16:04,018 INFO L168 Benchmark]: Boogie Preprocessor took 52.71 ms. Allocated memory is still 184.5 MB. Free memory was 141.0 MB in the beginning and 169.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:16:04,019 INFO L168 Benchmark]: RCFGBuilder took 385.75 ms. Allocated memory is still 184.5 MB. Free memory was 169.2 MB in the beginning and 157.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:16:04,019 INFO L168 Benchmark]: TraceAbstraction took 1232.41 ms. Allocated memory is still 184.5 MB. Free memory was 156.6 MB in the beginning and 129.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:16:04,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 184.5 MB. Free memory is still 167.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 179.32 ms. Allocated memory is still 184.5 MB. Free memory was 150.2 MB in the beginning and 141.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.71 ms. Allocated memory is still 184.5 MB. Free memory was 141.0 MB in the beginning and 169.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 385.75 ms. Allocated memory is still 184.5 MB. Free memory was 169.2 MB in the beginning and 157.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1232.41 ms. Allocated memory is still 184.5 MB. Free memory was 156.6 MB in the beginning and 129.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 827.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 335.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 285.2ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 10 SDslu, 16 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 328.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 19 LocationsWithAnnotation, 31 PreInvPairs, 35 NumberOfFragments, 78 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 70.1ms HoareSimplificationTime, 19 FomulaSimplificationsInter, 235 FormulaSimplificationTreeSizeReductionInter, 202.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...