/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/just_assert.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:20:54,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:20:54,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:20:54,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:20:54,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:20:54,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:20:54,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:20:54,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:20:54,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:20:54,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:20:54,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:20:54,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:20:54,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:20:54,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:20:54,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:20:54,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:20:54,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:20:54,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:20:54,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:20:54,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:20:54,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:20:54,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:20:54,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:20:54,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:20:54,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:20:54,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:20:54,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:20:54,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:20:54,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:20:54,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:20:54,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:20:54,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:20:54,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:20:54,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:20:54,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:20:54,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:20:54,415 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:20:54,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:20:54,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:20:54,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:20:54,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:20:54,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:20:54,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:20:54,417 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:20:54,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:20:54,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:20:54,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:20:54,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:20:54,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:20:54,896 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:20:54,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/just_assert.i [2021-02-24 04:20:54,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e5ee8bf/82f715eb2fca4d0683de38c51f0c4210/FLAGb8c0097d2 [2021-02-24 04:20:55,706 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:20:55,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i [2021-02-24 04:20:55,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e5ee8bf/82f715eb2fca4d0683de38c51f0c4210/FLAGb8c0097d2 [2021-02-24 04:20:56,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e5ee8bf/82f715eb2fca4d0683de38c51f0c4210 [2021-02-24 04:20:56,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:20:56,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:20:56,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:20:56,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:20:56,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:20:56,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11366dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56, skipping insertion in model container [2021-02-24 04:20:56,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:20:56,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:20:56,278 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/just_assert.i[300,313] [2021-02-24 04:20:56,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:20:56,299 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:20:56,318 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/just_assert.i[300,313] [2021-02-24 04:20:56,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:20:56,341 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:20:56,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56 WrapperNode [2021-02-24 04:20:56,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:20:56,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:20:56,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:20:56,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:20:56,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (1/1) ... [2021-02-24 04:20:56,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:20:56,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:20:56,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:20:56,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:20:56,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (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 [2021-02-24 04:20:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:20:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:20:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:20:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:20:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:20:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:20:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:20:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:20:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:20:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:20:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:20:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:20:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:20:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:20:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:20:56,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:20:56,718 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:20:56,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:20:56 BoogieIcfgContainer [2021-02-24 04:20:56,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:20:56,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:20:56,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:20:56,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:20:56,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:20:56" (1/3) ... [2021-02-24 04:20:56,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123633b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:20:56, skipping insertion in model container [2021-02-24 04:20:56,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:56" (2/3) ... [2021-02-24 04:20:56,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123633b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:20:56, skipping insertion in model container [2021-02-24 04:20:56,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:20:56" (3/3) ... [2021-02-24 04:20:56,732 INFO L111 eAbstractionObserver]: Analyzing ICFG just_assert.i [2021-02-24 04:20:56,755 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:20:56,770 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:20:56,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:20:56,892 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:20:56,893 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:20:56,893 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:20:56,893 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:20:56,893 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:20:56,893 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:20:56,894 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:20:56,894 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:20:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-02-24 04:20:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-24 04:20:56,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:56,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:56,926 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1600702992, now seen corresponding path program 1 times [2021-02-24 04:20:56,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:56,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460805507] [2021-02-24 04:20:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:57,062 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:57,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:57,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:57,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:57,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:57,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:57,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:20:57,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460805507] [2021-02-24 04:20:57,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:57,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:20:57,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509656653] [2021-02-24 04:20:57,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:20:57,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:57,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:20:57,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:20:57,455 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2021-02-24 04:20:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:57,566 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-02-24 04:20:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:20:57,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-02-24 04:20:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:57,595 INFO L225 Difference]: With dead ends: 26 [2021-02-24 04:20:57,596 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:20:57,605 INFO L677 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 [2021-02-24 04:20:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:20:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:20:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:20:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:20:57,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-24 04:20:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:57,646 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:20:57,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:20:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:20:57,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:20:57,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:20:57,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:20:57,889 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:20:57,890 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:20:57,890 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:20:57,890 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,891 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,891 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,891 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,891 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,891 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,892 INFO L185 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|)) [2021-02-24 04:20:57,892 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,892 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:20:57,892 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,892 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,893 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,893 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,893 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:20:57,893 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: false [2021-02-24 04:20:57,893 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 7 13) the Hoare annotation is: true [2021-02-24 04:20:57,894 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 7 13) the Hoare annotation is: true [2021-02-24 04:20:57,894 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: false [2021-02-24 04:20:57,894 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: false [2021-02-24 04:20:57,894 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 7 13) the Hoare annotation is: true [2021-02-24 04:20:57,894 INFO L192 CegarLoopUtils]: At program point L9-1(lines 9 11) the Hoare annotation is: true [2021-02-24 04:20:57,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:20:57 BoogieIcfgContainer [2021-02-24 04:20:57,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:20:57,917 INFO L168 Benchmark]: Toolchain (without parser) took 1824.33 ms. Allocated memory is still 152.0 MB. Free memory was 128.4 MB in the beginning and 104.6 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:57,927 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:20:57,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.66 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 118.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:57,939 INFO L168 Benchmark]: Boogie Preprocessor took 38.13 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:57,942 INFO L168 Benchmark]: RCFGBuilder took 337.79 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 105.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:57,944 INFO L168 Benchmark]: TraceAbstraction took 1187.47 ms. Allocated memory is still 152.0 MB. Free memory was 104.7 MB in the beginning and 104.6 MB in the end (delta: 73.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:20:57,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.66 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 118.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.13 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 337.79 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 105.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1187.47 ms. Allocated memory is still 152.0 MB. Free memory was 104.7 MB in the beginning and 104.6 MB in the end (delta: 73.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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 - ProcedureContractResult [Line: 7]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 21 LocationsWithAnnotation, 21 PreInvPairs, 26 NumberOfFragments, 51 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...