/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:57:21,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:57:21,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:57:21,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:57:21,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:57:21,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:57:21,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:57:21,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:57:21,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:57:21,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:57:21,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:57:21,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:57:21,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:57:21,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:57:21,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:57:21,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:57:21,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:57:21,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:57:21,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:57:21,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:57:21,840 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:57:21,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:57:21,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:57:21,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:57:21,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:57:21,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:57:21,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:57:21,842 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:57:21,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:57:22,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:57:22,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:57:22,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:57:22,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:57:22,270 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:57:22,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2021-02-22 01:57:22,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd814ddfe/8452165a76844a52a40b6f20640436ed/FLAG78db08b27 [2021-02-22 01:57:23,083 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:57:23,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c [2021-02-22 01:57:23,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd814ddfe/8452165a76844a52a40b6f20640436ed/FLAG78db08b27 [2021-02-22 01:57:23,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd814ddfe/8452165a76844a52a40b6f20640436ed [2021-02-22 01:57:23,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:57:23,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:57:23,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:57:23,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:57:23,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:57:23,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79977568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23, skipping insertion in model container [2021-02-22 01:57:23,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:57:23,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:57:23,676 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c[377,390] [2021-02-22 01:57:23,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:57:23,696 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:57:23,712 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c[377,390] [2021-02-22 01:57:23,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:57:23,735 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:57:23,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23 WrapperNode [2021-02-22 01:57:23,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:57:23,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:57:23,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:57:23,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:57:23,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (1/1) ... [2021-02-22 01:57:23,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:57:23,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:57:23,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:57:23,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:57:23,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (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 [2021-02-22 01:57:23,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:57:23,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:57:23,871 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:57:23,871 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-22 01:57:23,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:57:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:57:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:57:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:57:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:57:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:57:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:57:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:57:24,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:57:24,174 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:57:24,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:57:24 BoogieIcfgContainer [2021-02-22 01:57:24,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:57:24,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:57:24,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:57:24,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:57:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:57:23" (1/3) ... [2021-02-22 01:57:24,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392a32f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:57:24, skipping insertion in model container [2021-02-22 01:57:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:57:23" (2/3) ... [2021-02-22 01:57:24,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392a32f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:57:24, skipping insertion in model container [2021-02-22 01:57:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:57:24" (3/3) ... [2021-02-22 01:57:24,186 INFO L111 eAbstractionObserver]: Analyzing ICFG test13.c [2021-02-22 01:57:24,194 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:57:24,199 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:57:24,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:57:24,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:57:24,342 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:57:24,342 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:57:24,342 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:57:24,343 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:57:24,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:57:24,343 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:57:24,343 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:57:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-22 01:57:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-22 01:57:24,384 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:57:24,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:57:24,386 INFO L428 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:57:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:57:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1258297951, now seen corresponding path program 1 times [2021-02-22 01:57:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:57:24,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453065018] [2021-02-22 01:57:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:57:24,522 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:57:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:57:24,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:57:24,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:57:24,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:57:24,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:57:24,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:57:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:57:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:57:24,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:57:24,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:57:24,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:57:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:57:24,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453065018] [2021-02-22 01:57:24,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:57:24,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:57:24,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028012086] [2021-02-22 01:57:24,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:57:24,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:57:24,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:57:24,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:57:24,949 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2021-02-22 01:57:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:57:25,400 INFO L93 Difference]: Finished difference Result 39 states and 38 transitions. [2021-02-22 01:57:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:57:25,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-02-22 01:57:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:57:25,410 INFO L225 Difference]: With dead ends: 39 [2021-02-22 01:57:25,411 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:57:25,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:57:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:57:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:57:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:57:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:57:25,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-22 01:57:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:57:25,445 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:57:25,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:57:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:57:25,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:57:25,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:57:25,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:57:26,038 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:57:26,039 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:57:26,039 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:57:26,039 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,039 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,039 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:57:26,040 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,040 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:57:26,040 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,040 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,040 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,040 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-22 01:57:26,041 INFO L192 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: true [2021-02-22 01:57:26,041 INFO L192 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: true [2021-02-22 01:57:26,041 INFO L192 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: true [2021-02-22 01:57:26,041 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-22 01:57:26,042 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,042 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:57:26,042 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,042 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,042 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,043 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:57:26,043 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2021-02-22 01:57:26,043 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 19 22) the Hoare annotation is: true [2021-02-22 01:57:26,043 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 19 22) the Hoare annotation is: true [2021-02-22 01:57:26,043 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 19 22) the Hoare annotation is: true [2021-02-22 01:57:26,044 INFO L192 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: true [2021-02-22 01:57:26,044 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 6 14) the Hoare annotation is: true [2021-02-22 01:57:26,044 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,044 INFO L185 CegarLoopUtils]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,045 INFO L185 CegarLoopUtils]: At program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,045 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= ~pa~0.offset |~#a~0.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,045 INFO L185 CegarLoopUtils]: At program point checkFINAL(lines 6 14) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= ~pa~0.offset |~#a~0.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,045 INFO L185 CegarLoopUtils]: At program point L6(lines 6 14) the Hoare annotation is: (or (and (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset)) (not (= ~pa~0.base |~#a~0.base|)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= ~pa~0.offset |~#a~0.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,046 INFO L185 CegarLoopUtils]: At program point checkEXIT(lines 6 14) the Hoare annotation is: (or (not (= ~pa~0.base |~#a~0.base|)) (and (= check_~a.base check_~b.base) (= check_~a.base |check_#in~b.base|) (= |check_#in~b.offset| check_~a.offset) (= check_~a.offset check_~b.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= ~pa~0.offset |~#a~0.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2021-02-22 01:57:26,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:57:26 BoogieIcfgContainer [2021-02-22 01:57:26,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:57:26,070 INFO L168 Benchmark]: Toolchain (without parser) took 2626.76 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 139.7 MB in the beginning and 84.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 91.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:57:26,071 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 163.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:57:26,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.95 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 129.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:57:26,073 INFO L168 Benchmark]: Boogie Preprocessor took 32.65 ms. Allocated memory is still 163.6 MB. Free memory was 129.5 MB in the beginning and 128.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:57:26,073 INFO L168 Benchmark]: RCFGBuilder took 405.57 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 114.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:57:26,075 INFO L168 Benchmark]: TraceAbstraction took 1889.79 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 113.5 MB in the beginning and 84.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:57:26,078 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 163.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.95 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 129.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.65 ms. Allocated memory is still 163.6 MB. Free memory was 129.5 MB in the beginning and 128.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 405.57 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 114.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1889.79 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 113.5 MB in the beginning and 84.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((!(a == pa) || !(a == pa)) || !(b == a)) || !(a == b) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for check Derived contract for procedure check: (((!(pa == a) || (((a == b && a == b) && b == a) && a == b)) || !(b == a)) || !(pa == a)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 22 SDslu, 72 SDs, 0 SdLazy, 36 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 32 PreInvPairs, 39 NumberOfFragments, 280 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 32 FomulaSimplificationsInter, 623 FormulaSimplificationTreeSizeReductionInter, 0.3s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...