/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:48,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:48,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:48,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:48,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:48,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:48,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:48,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:48,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:48,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:48,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:48,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:48,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:48,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:48,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:48,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:48,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:48,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:48,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:48,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:48,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:48,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:48,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:48,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:48,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:23:48,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:48,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:48,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:48,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:48,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:48,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:48,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:48,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:48,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:48,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:48,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:48,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:48,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:48,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:48,552 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:48,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:48,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:48,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:48,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:48,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:48,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:48,553 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:48,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:48,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:48,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:48,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:48,884 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:48,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2020-07-07 13:23:48,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16684c83/af85283cd91f49149853f86062fb6687/FLAGc6d6b27f3 [2020-07-07 13:23:49,508 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:49,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2020-07-07 13:23:49,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16684c83/af85283cd91f49149853f86062fb6687/FLAGc6d6b27f3 [2020-07-07 13:23:49,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16684c83/af85283cd91f49149853f86062fb6687 [2020-07-07 13:23:49,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:49,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:49,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:49,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:49,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:49,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:49" (1/1) ... [2020-07-07 13:23:49,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f626611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:49, skipping insertion in model container [2020-07-07 13:23:49,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:49" (1/1) ... [2020-07-07 13:23:49,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:49,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:50,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:50,140 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:50,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:50,173 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:50,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50 WrapperNode [2020-07-07 13:23:50,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:50,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:50,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:50,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:50,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (1/1) ... [2020-07-07 13:23:50,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:50,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:50,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:50,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:50,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (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 [2020-07-07 13:23:50,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 13:23:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2020-07-07 13:23:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2020-07-07 13:23:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:50,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:50,524 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:23:50,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:50 BoogieIcfgContainer [2020-07-07 13:23:50,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:50,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:50,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:50,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:50,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:49" (1/3) ... [2020-07-07 13:23:50,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1c7701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:50, skipping insertion in model container [2020-07-07 13:23:50,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:50" (2/3) ... [2020-07-07 13:23:50,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1c7701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:50, skipping insertion in model container [2020-07-07 13:23:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:50" (3/3) ... [2020-07-07 13:23:50,536 INFO L109 eAbstractionObserver]: Analyzing ICFG oomInt.c_1.i [2020-07-07 13:23:50,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:50,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:50,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:50,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:50,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:50,625 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:50,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:50,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:50,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:50,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:50,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-07 13:23:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:23:50,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:50,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:50,681 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash -874370234, now seen corresponding path program 1 times [2020-07-07 13:23:50,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:50,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834932756] [2020-07-07 13:23:50,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:50,963 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:50,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834932756] [2020-07-07 13:23:50,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:50,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:50,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961245242] [2020-07-07 13:23:50,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:50,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:50,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:50,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:50,995 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2020-07-07 13:23:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:51,201 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-07-07 13:23:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:23:51,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-07 13:23:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:51,213 INFO L225 Difference]: With dead ends: 49 [2020-07-07 13:23:51,214 INFO L226 Difference]: Without dead ends: 19 [2020-07-07 13:23:51,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:23:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-07 13:23:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-07 13:23:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-07 13:23:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-07-07 13:23:51,280 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 18 [2020-07-07 13:23:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:51,281 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-07-07 13:23:51,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-07-07 13:23:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:23:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:51,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:51,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:51,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -587338874, now seen corresponding path program 1 times [2020-07-07 13:23:51,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:51,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489724974] [2020-07-07 13:23:51,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:51,413 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:51,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489724974] [2020-07-07 13:23:51,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:51,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:23:51,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993564558] [2020-07-07 13:23:51,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:23:51,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:51,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:23:51,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:51,417 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 6 states. [2020-07-07 13:23:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:51,459 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-07 13:23:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:23:51,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-07 13:23:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:51,461 INFO L225 Difference]: With dead ends: 19 [2020-07-07 13:23:51,461 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:23:51,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:23:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:23:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:23:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:23:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:23:51,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-07 13:23:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:51,464 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:23:51,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:23:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:23:51,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:23:51,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:51,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:23:51,683 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,683 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-07-07 13:23:51,684 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,684 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: true [2020-07-07 13:23:51,684 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 5 8) the Hoare annotation is: true [2020-07-07 13:23:51,684 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 5 8) the Hoare annotation is: true [2020-07-07 13:23:51,685 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 5 8) the Hoare annotation is: true [2020-07-07 13:23:51,685 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,685 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,685 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,685 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:23:51,686 INFO L264 CegarLoopResult]: At program point L17(lines 17 23) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= 0 (+ abs_int_~i 3))) [2020-07-07 13:23:51,686 INFO L264 CegarLoopResult]: At program point abs_intEXIT(lines 15 24) the Hoare annotation is: (and (or (not (= 0 (+ |abs_int_#in~i| 3))) (<= 3 |abs_int_#res|)) (or (= |abs_int_#in~i| abs_int_~i) (= 0 (+ abs_int_~i 3)))) [2020-07-07 13:23:51,686 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (not (= 0 (+ abs_int_~i 3))) (= |abs_int_#in~i| abs_int_~i)) [2020-07-07 13:23:51,687 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= 0 (+ abs_int_~i 3))) [2020-07-07 13:23:51,687 INFO L271 CegarLoopResult]: At program point abs_intENTRY(lines 15 24) the Hoare annotation is: true [2020-07-07 13:23:51,687 INFO L264 CegarLoopResult]: At program point abs_intFINAL(lines 15 24) the Hoare annotation is: (and (or (not (= 0 (+ |abs_int_#in~i| 3))) (<= 3 |abs_int_#res|)) (or (= |abs_int_#in~i| abs_int_~i) (= 0 (+ abs_int_~i 3)))) [2020-07-07 13:23:51,687 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= 1 ~p~0) [2020-07-07 13:23:51,688 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret0|)) [2020-07-07 13:23:51,688 INFO L264 CegarLoopResult]: At program point firstFunctionENTRY(lines 26 30) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-07-07 13:23:51,688 INFO L264 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret0|)) [2020-07-07 13:23:51,688 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-07-07 13:23:51,689 INFO L264 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret0|) (<= 1 ~p~0)) [2020-07-07 13:23:51,689 INFO L271 CegarLoopResult]: At program point L29-3(lines 26 30) the Hoare annotation is: true [2020-07-07 13:23:51,689 INFO L271 CegarLoopResult]: At program point firstFunctionEXIT(lines 26 30) the Hoare annotation is: true [2020-07-07 13:23:51,689 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 32 35) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-07-07 13:23:51,690 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 32 35) the Hoare annotation is: true [2020-07-07 13:23:51,690 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 32 35) the Hoare annotation is: true [2020-07-07 13:23:51,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:23:51 BoogieIcfgContainer [2020-07-07 13:23:51,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:23:51,715 INFO L168 Benchmark]: Toolchain (without parser) took 1769.92 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 82.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,716 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 134.7 MB. Free memory was 116.9 MB in the beginning and 116.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.94 ms. Allocated memory is still 134.7 MB. Free memory was 98.6 MB in the beginning and 89.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,718 INFO L168 Benchmark]: Boogie Preprocessor took 26.83 ms. Allocated memory is still 134.7 MB. Free memory was 89.3 MB in the beginning and 88.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,719 INFO L168 Benchmark]: RCFGBuilder took 325.64 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 88.0 MB in the beginning and 166.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,720 INFO L168 Benchmark]: TraceAbstraction took 1182.68 ms. Allocated memory is still 198.7 MB. Free memory was 166.2 MB in the beginning and 82.3 MB in the end (delta: 83.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:51,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 134.7 MB. Free memory was 116.9 MB in the beginning and 116.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.94 ms. Allocated memory is still 134.7 MB. Free memory was 98.6 MB in the beginning and 89.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.83 ms. Allocated memory is still 134.7 MB. Free memory was 89.3 MB in the beginning and 88.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.64 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 88.0 MB in the beginning and 166.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1182.68 ms. Allocated memory is still 198.7 MB. Free memory was 166.2 MB in the beginning and 82.3 MB in the end (delta: 83.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 5]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for abs_int Derived contract for procedure abs_int: (!(0 == \old(i) + 3) || 3 <= \result) && (\old(i) == i || 0 == i + 3) - ProcedureContractResult [Line: 26]: Procedure Contract for firstFunction Derived contract for procedure firstFunction: 1 - ProcedureContractResult [Line: 32]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 28 SDslu, 73 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 28 LocationsWithAnnotation, 32 PreInvPairs, 50 NumberOfFragments, 117 HoareAnnotationTreeSize, 32 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...