/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:13,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:13,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:13,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:01:13,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:13,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:13,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:13,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:01:13,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:13,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:13,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:13,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:13,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:13,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:13,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:13,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:13,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:13,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:13,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:13,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:13,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:13,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:13,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:13,211 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:13,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:13,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:13,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:13,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:13,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:13,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:13,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:13,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:13,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:13,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:13,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:13,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:13,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2020-10-23 22:01:13,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f4d709a/dae30e92f46945af816c5a996c2a7e88/FLAG00e87cb41 [2020-10-23 22:01:14,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:14,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2020-10-23 22:01:14,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f4d709a/dae30e92f46945af816c5a996c2a7e88/FLAG00e87cb41 [2020-10-23 22:01:14,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f4d709a/dae30e92f46945af816c5a996c2a7e88 [2020-10-23 22:01:14,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:14,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:14,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:14,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:14,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:14,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:14,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b1ef92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14, skipping insertion in model container [2020-10-23 22:01:14,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:14,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:14,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:14,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:14,944 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:14,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:14,998 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:14,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14 WrapperNode [2020-10-23 22:01:15,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:15,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:15,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:15,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:15,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (1/1) ... [2020-10-23 22:01:15,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:15,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:15,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:15,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:15,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (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 [2020-10-23 22:01:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:01:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:01:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:01:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:01:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:01:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:15,656 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:15,659 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:01:15,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:15 BoogieIcfgContainer [2020-10-23 22:01:15,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:15,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:15,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:15,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:15,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:14" (1/3) ... [2020-10-23 22:01:15,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3d066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:15, skipping insertion in model container [2020-10-23 22:01:15,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:14" (2/3) ... [2020-10-23 22:01:15,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3d066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:15, skipping insertion in model container [2020-10-23 22:01:15,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:15" (3/3) ... [2020-10-23 22:01:15,695 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2020-10-23 22:01:15,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:15,716 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:15,730 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:15,756 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:15,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:15,757 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:15,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:15,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:15,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:15,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:15,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-23 22:01:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:15,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:15,788 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, 1, 1, 1, 1, 1] [2020-10-23 22:01:15,788 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1383657491, now seen corresponding path program 1 times [2020-10-23 22:01:15,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:15,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560914414] [2020-10-23 22:01:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:15,890 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:16,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:16,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560914414] [2020-10-23 22:01:16,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:16,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:01:16,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190703262] [2020-10-23 22:01:16,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:01:16,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:16,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:01:16,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:01:16,291 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-10-23 22:01:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:16,985 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-23 22:01:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:01:16,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-23 22:01:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:16,995 INFO L225 Difference]: With dead ends: 61 [2020-10-23 22:01:16,995 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:01:17,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-23 22:01:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:01:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:01:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:01:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:01:17,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-23 22:01:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:17,034 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:01:17,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:01:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:01:17,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:01:17,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:17,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:01:17,481 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 15 [2020-10-23 22:01:18,264 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,264 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,264 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,264 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,265 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,265 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,265 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,265 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,265 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,266 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,266 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,266 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,266 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,267 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:01:18,268 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:01:18,268 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:01:18,268 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:18,268 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:18,268 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:18,268 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2020-10-23 22:01:18,269 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2020-10-23 22:01:18,269 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,270 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,270 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,270 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 22:01:18,270 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2020-10-23 22:01:18,270 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-23 22:01:18,271 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2020-10-23 22:01:18,271 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-10-23 22:01:18,271 INFO L270 CegarLoopResult]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2020-10-23 22:01:18,272 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2020-10-23 22:01:18,272 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-23 22:01:18,272 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,272 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-10-23 22:01:18,273 INFO L270 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,273 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-23 22:01:18,273 INFO L270 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (= main_~i~0 1) [2020-10-23 22:01:18,273 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:01:18,273 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:18,273 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:01:18,274 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:18,274 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:01:18,274 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:18,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:01:18 BoogieIcfgContainer [2020-10-23 22:01:18,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:01:18,297 INFO L168 Benchmark]: Toolchain (without parser) took 3586.84 ms. Allocated memory is still 155.2 MB. Free memory was 131.7 MB in the beginning and 64.6 MB in the end (delta: 67.1 MB). Peak memory consumption was 68.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:18,298 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.3 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:01:18,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.86 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:18,300 INFO L168 Benchmark]: Boogie Preprocessor took 64.49 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:18,301 INFO L168 Benchmark]: RCFGBuilder took 588.40 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 138.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:18,302 INFO L168 Benchmark]: TraceAbstraction took 2613.71 ms. Allocated memory is still 155.2 MB. Free memory was 138.1 MB in the beginning and 64.6 MB in the end (delta: 73.6 MB). Peak memory consumption was 74.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:18,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.3 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.86 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.49 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.40 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 138.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2613.71 ms. Allocated memory is still 155.2 MB. Free memory was 138.1 MB in the beginning and 64.6 MB in the end (delta: 73.6 MB). Peak memory consumption was 74.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((2 <= i && i + k <= 2) && 1 <= i + k) || ((k <= 1 && 0 <= k) && i == 1) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: ((2 <= i && i + k <= 2) && 1 <= i + k) || i == 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 35 SDslu, 78 SDs, 0 SdLazy, 126 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 43 LocationsWithAnnotation, 49 PreInvPairs, 65 NumberOfFragments, 238 HoareAnnotationTreeSize, 49 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 43 FomulaSimplificationsInter, 655 FormulaSimplificationTreeSizeReductionInter, 0.8s 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...