/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:14:29,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:14:29,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:14:29,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 23:14:29,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:14:29,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:14:29,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:14:29,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:14:29,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:14:29,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:14:29,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:14:29,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:14:29,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:14:29,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:14:29,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:14:29,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:14:29,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:14:29,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:14:29,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:14:29,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:14:29,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:14:29,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:14:29,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:14:29,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:14:29,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:14:29,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:14:29,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:14:29,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:14:29,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:14:29,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:14:29,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:14:29,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:14:29,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:14:29,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:14:29,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:14:29,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:14:29,779 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:14:29,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:14:29,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:14:29,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:14:29,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:14:29,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:14:29,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:14:29,780 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:14:30,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:14:30,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:14:30,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:14:30,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:14:30,272 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:14:30,273 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-09-04 23:14:30,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe092c4b/49e667c7ad54476faf0f49475cc2c9c2/FLAG84ddd9f59 [2020-09-04 23:14:30,984 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:14:30,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-09-04 23:14:31,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe092c4b/49e667c7ad54476faf0f49475cc2c9c2/FLAG84ddd9f59 [2020-09-04 23:14:31,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe092c4b/49e667c7ad54476faf0f49475cc2c9c2 [2020-09-04 23:14:31,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:14:31,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:14:31,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:14:31,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:14:31,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:14:31,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e983976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31, skipping insertion in model container [2020-09-04 23:14:31,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:14:31,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:14:31,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:14:31,627 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:14:31,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:14:31,674 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:14:31,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31 WrapperNode [2020-09-04 23:14:31,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:14:31,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:14:31,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:14:31,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:14:31,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... [2020-09-04 23:14:31,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:14:31,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:14:31,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:14:31,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:14:31,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:14:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:14:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:14:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:14:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:14:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:14:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:14:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:14:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:14:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:14:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:14:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:14:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:14:32,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:14:32,181 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 23:14:32,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:14:32 BoogieIcfgContainer [2020-09-04 23:14:32,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:14:32,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:14:32,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:14:32,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:14:32,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:14:31" (1/3) ... [2020-09-04 23:14:32,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47528e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:14:32, skipping insertion in model container [2020-09-04 23:14:32,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:31" (2/3) ... [2020-09-04 23:14:32,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47528e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:14:32, skipping insertion in model container [2020-09-04 23:14:32,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:14:32" (3/3) ... [2020-09-04 23:14:32,200 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-09-04 23:14:32,224 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:14:32,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-04 23:14:32,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-04 23:14:32,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:14:32,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:14:32,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:14:32,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:14:32,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:14:32,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:14:32,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:14:32,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:14:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-04 23:14:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 23:14:32,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:14:32,372 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] [2020-09-04 23:14:32,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:14:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:14:32,383 INFO L82 PathProgramCache]: Analyzing trace with hash -627197159, now seen corresponding path program 1 times [2020-09-04 23:14:32,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:14:32,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351544618] [2020-09-04 23:14:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:14:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:14:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:14:32,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351544618] [2020-09-04 23:14:32,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:14:32,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:14:32,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991085252] [2020-09-04 23:14:32,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:14:32,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:14:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:14:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:14:32,869 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 6 states. [2020-09-04 23:14:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:14:33,161 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-09-04 23:14:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 23:14:33,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-04 23:14:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:14:33,178 INFO L225 Difference]: With dead ends: 61 [2020-09-04 23:14:33,179 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 23:14:33,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:14:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 23:14:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-04 23:14:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 23:14:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-04 23:14:33,255 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2020-09-04 23:14:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:14:33,256 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-04 23:14:33,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:14:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-04 23:14:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 23:14:33,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:14:33,258 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] [2020-09-04 23:14:33,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:14:33,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:14:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:14:33,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1662596629, now seen corresponding path program 1 times [2020-09-04 23:14:33,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:14:33,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921199655] [2020-09-04 23:14:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:14:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:14:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:14:33,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921199655] [2020-09-04 23:14:33,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:14:33,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:14:33,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569294957] [2020-09-04 23:14:33,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:14:33,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:14:33,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:14:33,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:14:33,399 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 6 states. [2020-09-04 23:14:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:14:33,640 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-04 23:14:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:14:33,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-04 23:14:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:14:33,654 INFO L225 Difference]: With dead ends: 46 [2020-09-04 23:14:33,656 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 23:14:33,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-04 23:14:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 23:14:33,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-04 23:14:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 23:14:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-09-04 23:14:33,671 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2020-09-04 23:14:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:14:33,672 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-09-04 23:14:33,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:14:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-09-04 23:14:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 23:14:33,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:14:33,674 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, 1, 1, 1, 1, 1, 1] [2020-09-04 23:14:33,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:14:33,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:14:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:14:33,675 INFO L82 PathProgramCache]: Analyzing trace with hash 792220297, now seen corresponding path program 1 times [2020-09-04 23:14:33,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:14:33,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436695969] [2020-09-04 23:14:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:14:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:33,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:14:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:14:33,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436695969] [2020-09-04 23:14:33,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:14:33,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 23:14:33,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491550076] [2020-09-04 23:14:33,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 23:14:33,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:14:33,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 23:14:33,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:14:33,823 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 8 states. [2020-09-04 23:14:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:14:34,379 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-09-04 23:14:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:14:34,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-04 23:14:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:14:34,381 INFO L225 Difference]: With dead ends: 72 [2020-09-04 23:14:34,381 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:14:34,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-09-04 23:14:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:14:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:14:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:14:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:14:34,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-04 23:14:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:14:34,384 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:14:34,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 23:14:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:14:34,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:14:34,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:14:34,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:14:35,886 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,886 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-09-04 23:14:35,886 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_100~0 |old(~__return_100~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-04 23:14:35,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,888 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,889 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:14:35,889 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:14:35,889 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-04 23:14:35,889 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-04 23:14:35,889 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:14:35,889 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:14:35,892 INFO L264 CegarLoopResult]: At program point L31(lines 31 87) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) [2020-09-04 23:14:35,892 INFO L264 CegarLoopResult]: At program point L93(lines 12 100) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-09-04 23:14:35,892 INFO L264 CegarLoopResult]: At program point L60(lines 60 68) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 100) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,893 INFO L264 CegarLoopResult]: At program point L81(line 81) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-09-04 23:14:35,894 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,894 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,894 INFO L264 CegarLoopResult]: At program point L44(lines 44 85) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (not (= main_~__tmp_2~0 0))) (.cse2 (< 0 (+ main_~main__i~0 1))) (.cse3 (< main_~main__i~0 main_~main__nlen~0)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,894 INFO L264 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,895 INFO L264 CegarLoopResult]: At program point L98(line 98) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,896 INFO L264 CegarLoopResult]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) the Hoare annotation is: false [2020-09-04 23:14:35,896 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2020-09-04 23:14:35,896 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,896 INFO L264 CegarLoopResult]: At program point L24(lines 24 94) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2020-09-04 23:14:35,897 INFO L264 CegarLoopResult]: At program point L82(line 82) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-09-04 23:14:35,897 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,897 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,897 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,897 INFO L264 CegarLoopResult]: At program point L74(lines 74 83) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,898 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (< 0 (+ main_~main__i~0 1))) (.cse2 (< main_~main__i~0 main_~main__nlen~0))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,898 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-09-04 23:14:35,898 INFO L264 CegarLoopResult]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) the Hoare annotation is: false [2020-09-04 23:14:35,898 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-09-04 23:14:35,898 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (= main_~__tmp_1~0 1)) [2020-09-04 23:14:35,899 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,899 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,900 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-09-04 23:14:35,900 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 11 100) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-09-04 23:14:35,901 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (not (= main_~__tmp_2~0 0))) (.cse2 (< 0 (+ main_~main__i~0 1))) (.cse3 (< main_~main__i~0 main_~main__nlen~0))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2 .cse3 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,901 INFO L264 CegarLoopResult]: At program point L67(lines 37 87) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (< 0 (+ main_~main__i~0 1))) (.cse2 (< main_~main__i~0 main_~main__nlen~0))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse1 .cse2 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,901 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: false [2020-09-04 23:14:35,901 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-09-04 23:14:35,901 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-09-04 23:14:35,902 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (= main_~__tmp_1~0 1)) [2020-09-04 23:14:35,902 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,903 INFO L264 CegarLoopResult]: At program point L92(line 92) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0)) [2020-09-04 23:14:35,903 INFO L264 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,903 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (not (= main_~__tmp_2~0 0))) (.cse2 (< 0 (+ main_~main__i~0 1))) (.cse3 (< main_~main__i~0 main_~main__nlen~0)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,905 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,905 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: false [2020-09-04 23:14:35,905 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-04 23:14:35,906 INFO L264 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-04 23:14:35,906 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (not (= main_~__tmp_2~0 0))) (.cse2 (< 0 (+ main_~main__i~0 1))) (.cse3 (< main_~main__i~0 main_~main__nlen~0))) (or (and (not (= main_~__tmp_1~0 0)) .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)))) [2020-09-04 23:14:35,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:14:35 BoogieIcfgContainer [2020-09-04 23:14:35,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:14:35,944 INFO L168 Benchmark]: Toolchain (without parser) took 4608.86 ms. Allocated memory was 139.5 MB in the beginning and 245.9 MB in the end (delta: 106.4 MB). Free memory was 102.7 MB in the beginning and 187.5 MB in the end (delta: -84.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:14:35,945 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:14:35,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.93 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:14:35,947 INFO L168 Benchmark]: Boogie Preprocessor took 123.02 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 182.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:14:35,948 INFO L168 Benchmark]: RCFGBuilder took 389.19 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 165.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:14:35,949 INFO L168 Benchmark]: TraceAbstraction took 3749.97 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 165.3 MB in the beginning and 187.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:14:35,953 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.93 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.02 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 182.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.19 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 165.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3749.97 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 165.3 MB in the beginning and 187.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 62]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((!(__tmp_1 == 0) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__tmp_2 == 0)) && 0 < main__i + 1) && main__i < main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((!(__tmp_1 == 0) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) && !(__tmp_3 == 0)) || ((((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && __VERIFIER_assert__cond == 1) && __tmp_1 == 1) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: \old(__return_100) == __return_100 || (!(__tmp_1 == 0) && !(__VERIFIER_assert__cond == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 333 SDslu, 85 SDs, 0 SdLazy, 304 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 55 PreInvPairs, 92 NumberOfFragments, 812 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1491 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 55 FomulaSimplificationsInter, 393 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 8282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...