/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:39:17,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:39:17,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:39:17,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:39:17,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:39:17,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:39:17,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:39:17,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:39:17,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:39:17,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:39:17,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:39:17,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:39:17,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:39:17,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:39:17,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:39:17,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:39:17,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:39:17,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:39:17,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:39:17,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:39:17,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:39:17,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:39:17,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:39:17,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:39:17,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:39:17,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:39:17,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:39:17,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:39:17,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:39:17,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:39:17,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:39:17,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:39:17,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:39:17,399 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:39:17,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:39:17,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:39:17,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:39:17,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:39:17,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:39:17,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:39:17,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:39:17,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:39:17,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:39:17,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:39:17,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:39:17,810 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:39:17,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-10-24 00:39:17,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6c3ad51/4a4212c70684458fb05f4c5a399d585b/FLAG1fe1d326a [2020-10-24 00:39:18,591 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:39:18,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-10-24 00:39:18,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6c3ad51/4a4212c70684458fb05f4c5a399d585b/FLAG1fe1d326a [2020-10-24 00:39:18,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6c3ad51/4a4212c70684458fb05f4c5a399d585b [2020-10-24 00:39:18,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:39:18,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:39:18,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:39:18,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:39:18,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:39:18,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:39:18" (1/1) ... [2020-10-24 00:39:18,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa3e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:18, skipping insertion in model container [2020-10-24 00:39:18,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:39:18" (1/1) ... [2020-10-24 00:39:18,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:39:18,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:39:19,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:39:19,160 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:39:19,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:39:19,193 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:39:19,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19 WrapperNode [2020-10-24 00:39:19,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:39:19,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:39:19,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:39:19,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:39:19,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (1/1) ... [2020-10-24 00:39:19,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:39:19,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:39:19,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:39:19,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:39:19,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (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 [2020-10-24 00:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-24 00:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-10-24 00:39:19,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:39:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:39:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:39:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:39:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:39:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-24 00:39:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-10-24 00:39:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:39:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:39:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:39:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:39:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:39:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:39:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:39:19,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:39:19,681 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:39:19,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:39:19 BoogieIcfgContainer [2020-10-24 00:39:19,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:39:19,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:39:19,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:39:19,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:39:19,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:39:18" (1/3) ... [2020-10-24 00:39:19,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c126c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:39:19, skipping insertion in model container [2020-10-24 00:39:19,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:39:19" (2/3) ... [2020-10-24 00:39:19,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c126c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:39:19, skipping insertion in model container [2020-10-24 00:39:19,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:39:19" (3/3) ... [2020-10-24 00:39:19,693 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-10-24 00:39:19,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:39:19,718 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:39:19,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:39:19,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:39:19,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:39:19,784 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:39:19,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:39:19,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:39:19,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:39:19,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:39:19,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:39:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-24 00:39:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 00:39:19,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:39:19,824 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, 1, 1] [2020-10-24 00:39:19,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:39:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:39:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash -590267415, now seen corresponding path program 1 times [2020-10-24 00:39:19,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:39:19,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458061446] [2020-10-24 00:39:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:39:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:39:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:39:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:39:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-24 00:39:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:39:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:39:20,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458061446] [2020-10-24 00:39:20,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:39:20,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 00:39:20,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355776109] [2020-10-24 00:39:20,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 00:39:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:39:20,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 00:39:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:39:20,437 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2020-10-24 00:39:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:39:20,678 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-24 00:39:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 00:39:20,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-24 00:39:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:39:20,690 INFO L225 Difference]: With dead ends: 49 [2020-10-24 00:39:20,690 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 00:39:20,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 00:39:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 00:39:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 00:39:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 00:39:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 00:39:20,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-24 00:39:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:39:20,753 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 00:39:20,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 00:39:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 00:39:20,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 00:39:20,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:39:20,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 00:39:21,083 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,083 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,083 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,084 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,084 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,084 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,084 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,084 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,085 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,085 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,085 INFO L270 CegarLoopResult]: 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|)) [2020-10-24 00:39:21,085 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,086 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 00:39:21,086 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,086 INFO L270 CegarLoopResult]: At program point fFINAL(lines 8 13) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-24 00:39:21,086 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,087 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,087 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,087 INFO L270 CegarLoopResult]: At program point L11-1(lines 8 13) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,087 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-24 00:39:21,088 INFO L270 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,088 INFO L270 CegarLoopResult]: At program point L10-2(line 10) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-24 00:39:21,088 INFO L270 CegarLoopResult]: At program point fEXIT(lines 8 13) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-24 00:39:21,088 INFO L277 CegarLoopResult]: At program point fENTRY(lines 8 13) the Hoare annotation is: true [2020-10-24 00:39:21,089 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,089 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,089 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,089 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 00:39:21,089 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 22 24) the Hoare annotation is: true [2020-10-24 00:39:21,090 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 22 24) the Hoare annotation is: true [2020-10-24 00:39:21,090 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 22 24) the Hoare annotation is: true [2020-10-24 00:39:21,090 INFO L277 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-10-24 00:39:21,090 INFO L277 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-10-24 00:39:21,091 INFO L277 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-10-24 00:39:21,091 INFO L277 CegarLoopResult]: At program point L18-1(lines 15 20) the Hoare annotation is: true [2020-10-24 00:39:21,091 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-24 00:39:21,091 INFO L277 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-10-24 00:39:21,091 INFO L277 CegarLoopResult]: At program point f2EXIT(lines 15 20) the Hoare annotation is: true [2020-10-24 00:39:21,092 INFO L277 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-10-24 00:39:21,092 INFO L277 CegarLoopResult]: At program point f2ENTRY(lines 15 20) the Hoare annotation is: true [2020-10-24 00:39:21,092 INFO L277 CegarLoopResult]: At program point f2FINAL(lines 15 20) the Hoare annotation is: true [2020-10-24 00:39:21,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:39:21 BoogieIcfgContainer [2020-10-24 00:39:21,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:39:21,114 INFO L168 Benchmark]: Toolchain (without parser) took 2165.44 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 108.6 MB in the beginning and 136.9 MB in the end (delta: -28.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:39:21,115 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:39:21,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.68 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 127.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:39:21,117 INFO L168 Benchmark]: Boogie Preprocessor took 33.21 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 126.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:39:21,118 INFO L168 Benchmark]: RCFGBuilder took 454.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 122.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:39:21,120 INFO L168 Benchmark]: TraceAbstraction took 1425.45 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 121.8 MB in the beginning and 136.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:39:21,124 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 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.68 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 127.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.21 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 126.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 122.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1425.45 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 121.8 MB in the beginning and 136.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for f Derived contract for procedure f: !(\old(n) == 2) || 2 == n - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for f2 Derived contract for procedure f2: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 9 SDslu, 33 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 41 LocationsWithAnnotation, 55 PreInvPairs, 61 NumberOfFragments, 110 HoareAnnotationTreeSize, 55 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 230 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...