/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/ldv-regression/oomInt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:51:43,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:51:43,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:51:43,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:51:43,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:51:43,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:51:43,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:51:43,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:51:43,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:51:43,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:51:43,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:51:43,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:51:43,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:51:43,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:51:43,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:51:43,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:51:43,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:51:43,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:51:43,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:51:43,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:51:43,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:51:43,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:51:43,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:51:43,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:51:43,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:51:43,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:51:43,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:51:43,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:51:43,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:51:43,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:51:43,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:51:43,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:51:43,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:51:43,755 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:51:43,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:51:43,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:51:43,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:51:43,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:51:43,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:51:43,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:51:43,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:51:44,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:51:44,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:51:44,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:51:44,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:51:44,220 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:51:44,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.i [2020-11-07 00:51:44,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd96f2794/e12eb5e3823342ada2bc7b33b74c81ee/FLAG55e62fb27 [2020-11-07 00:51:45,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:51:45,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.i [2020-11-07 00:51:45,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd96f2794/e12eb5e3823342ada2bc7b33b74c81ee/FLAG55e62fb27 [2020-11-07 00:51:45,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd96f2794/e12eb5e3823342ada2bc7b33b74c81ee [2020-11-07 00:51:45,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:51:45,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:51:45,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:51:45,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:51:45,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:51:45,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695e05a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45, skipping insertion in model container [2020-11-07 00:51:45,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:51:45,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:51:45,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:51:45,639 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:51:45,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:51:45,673 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:51:45,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45 WrapperNode [2020-11-07 00:51:45,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:51:45,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:51:45,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:51:45,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:51:45,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (1/1) ... [2020-11-07 00:51:45,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:51:45,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:51:45,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:51:45,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:51:45,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (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 [2020-11-07 00:51:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:51:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:51:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:51:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 00:51:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2020-11-07 00:51:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2020-11-07 00:51:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:51:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:51:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:51:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:51:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:51:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 00:51:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2020-11-07 00:51:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2020-11-07 00:51:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:51:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:51:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:51:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:51:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:51:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:51:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:51:46,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:51:46,049 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:51:46,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:46 BoogieIcfgContainer [2020-11-07 00:51:46,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:51:46,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:51:46,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:51:46,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:51:46,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:45" (1/3) ... [2020-11-07 00:51:46,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bac51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:46, skipping insertion in model container [2020-11-07 00:51:46,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:45" (2/3) ... [2020-11-07 00:51:46,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bac51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:46, skipping insertion in model container [2020-11-07 00:51:46,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:46" (3/3) ... [2020-11-07 00:51:46,062 INFO L111 eAbstractionObserver]: Analyzing ICFG oomInt.i [2020-11-07 00:51:46,107 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:51:46,112 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:51:46,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:51:46,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:51:46,159 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:51:46,159 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:51:46,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:51:46,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:51:46,160 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:51:46,160 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:51:46,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:51:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-07 00:51:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 00:51:46,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:51:46,190 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] [2020-11-07 00:51:46,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:51:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:51:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash -893757991, now seen corresponding path program 1 times [2020-11-07 00:51:46,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:51:46,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89361739] [2020-11-07 00:51:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:51:46,301 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:51:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:51:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:51:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:51:46,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89361739] [2020-11-07 00:51:46,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:51:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:51:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565775356] [2020-11-07 00:51:46,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:51:46,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:51:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:51:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:51:46,795 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 9 states. [2020-11-07 00:51:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:51:47,396 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-11-07 00:51:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 00:51:47,399 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-07 00:51:47,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:51:47,411 INFO L225 Difference]: With dead ends: 68 [2020-11-07 00:51:47,412 INFO L226 Difference]: Without dead ends: 29 [2020-11-07 00:51:47,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-07 00:51:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-07 00:51:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-07 00:51:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-07 00:51:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2020-11-07 00:51:47,477 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 28 [2020-11-07 00:51:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:51:47,477 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2020-11-07 00:51:47,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:51:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2020-11-07 00:51:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 00:51:47,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:51:47,479 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] [2020-11-07 00:51:47,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:51:47,480 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:51:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:51:47,482 INFO L82 PathProgramCache]: Analyzing trace with hash 65472025, now seen corresponding path program 1 times [2020-11-07 00:51:47,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:51:47,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618318297] [2020-11-07 00:51:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:51:47,487 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:51:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:51:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:51:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:51:47,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618318297] [2020-11-07 00:51:47,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:51:47,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:51:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375309454] [2020-11-07 00:51:47,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:51:47,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:51:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:51:47,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:51:47,662 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 5 states. [2020-11-07 00:51:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:51:47,784 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-11-07 00:51:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:51:47,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-07 00:51:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:51:47,786 INFO L225 Difference]: With dead ends: 29 [2020-11-07 00:51:47,786 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:51:47,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:51:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:51:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:51:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:51:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:51:47,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-07 00:51:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:51:47,790 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:51:47,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:51:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:51:47,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:51:47,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:51:47,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:51:48,428 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,429 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,429 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,429 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,429 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,429 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,430 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,430 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,430 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,430 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,430 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,431 INFO L262 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)|) (= ~p~0 |old(~p~0)|) (= |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|)) [2020-11-07 00:51:48,431 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,431 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 00:51:48,431 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,431 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,432 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,432 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,432 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:51:48,432 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 35 38) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-11-07 00:51:48,432 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 35 38) the Hoare annotation is: true [2020-11-07 00:51:48,432 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 35 38) the Hoare annotation is: true [2020-11-07 00:51:48,433 INFO L262 CegarLoopResult]: At program point abs_intEXIT(lines 18 27) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-11-07 00:51:48,433 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (not (= (+ |abs_int_#in~i| 3) 0)) (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0))) [2020-11-07 00:51:48,433 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-11-07 00:51:48,433 INFO L262 CegarLoopResult]: At program point L20(lines 20 26) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-11-07 00:51:48,434 INFO L269 CegarLoopResult]: At program point abs_intENTRY(lines 18 27) the Hoare annotation is: true [2020-11-07 00:51:48,434 INFO L262 CegarLoopResult]: At program point abs_intFINAL(lines 18 27) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-11-07 00:51:48,434 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (<= 1 ~p~0) [2020-11-07 00:51:48,434 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-11-07 00:51:48,434 INFO L262 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-11-07 00:51:48,435 INFO L262 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret7|) (<= 1 ~p~0)) [2020-11-07 00:51:48,435 INFO L262 CegarLoopResult]: At program point firstFunctionENTRY(lines 29 33) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-11-07 00:51:48,435 INFO L269 CegarLoopResult]: At program point firstFunctionFINAL(lines 29 33) the Hoare annotation is: true [2020-11-07 00:51:48,435 INFO L269 CegarLoopResult]: At program point firstFunctionEXIT(lines 29 33) the Hoare annotation is: true [2020-11-07 00:51:48,435 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 14) the Hoare annotation is: true [2020-11-07 00:51:48,436 INFO L262 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-11-07 00:51:48,436 INFO L262 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-11-07 00:51:48,436 INFO L262 CegarLoopResult]: At program point L10(lines 10 13) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-11-07 00:51:48,436 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 8 14) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-11-07 00:51:48,437 INFO L262 CegarLoopResult]: At program point L10-2(lines 8 14) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-11-07 00:51:48,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:51:48 BoogieIcfgContainer [2020-11-07 00:51:48,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:51:48,461 INFO L168 Benchmark]: Toolchain (without parser) took 3028.69 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 129.4 MB in the beginning and 90.5 MB in the end (delta: 38.9 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:51:48,462 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 127.3 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:51:48,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.31 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 119.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:51:48,465 INFO L168 Benchmark]: Boogie Preprocessor took 34.83 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 118.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:51:48,466 INFO L168 Benchmark]: RCFGBuilder took 340.41 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 105.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:51:48,467 INFO L168 Benchmark]: TraceAbstraction took 2404.24 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 104.5 MB in the beginning and 90.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:51:48,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 127.3 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 236.31 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 119.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.83 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 118.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 340.41 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 105.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2404.24 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 104.5 MB in the beginning and 90.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 47.3 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: 18]: Procedure Contract for abs_int Derived contract for procedure abs_int: ((\old(i) == i || i + 3 == 0) && 3 <= \result) || (!(\old(i) + 3 == 0) && (\old(i) == i || i + 3 == 0)) - ProcedureContractResult [Line: 29]: Procedure Contract for firstFunction Derived contract for procedure firstFunction: 1 - ProcedureContractResult [Line: 35]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= p) || \old(i) == 0) || !(i == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 42 SDslu, 170 SDs, 0 SdLazy, 127 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 51 PreInvPairs, 73 NumberOfFragments, 234 HoareAnnotationTreeSize, 51 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 559 FormulaSimplificationTreeSizeReductionInter, 0.4s 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...