/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 0.1.25-72570d3 [2020-08-22 23:04:40,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:04:40,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:04:40,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:04:40,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:04:40,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:04:40,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:04:40,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:04:40,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:04:40,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:04:40,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:04:40,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:04:40,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:04:40,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:04:40,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:04:40,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:04:40,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:04:40,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:04:40,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:04:40,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:04:40,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:04:40,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:04:40,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:04:40,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:04:40,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:04:40,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:04:40,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:04:40,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:04:40,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:04:40,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:04:40,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:04:40,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:04:40,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:04:40,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:04:40,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:04:40,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:04:40,792 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:04:40,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:04:40,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:04:40,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:04:40,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:04:40,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:04:40,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:04:40,794 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 [2020-08-22 23:04:41,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:04:41,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:04:41,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:04:41,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:04:41,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:04:41,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-08-22 23:04:41,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37da7ff65/a12bf52162a740d98d68ce8b1c7cef05/FLAG0f429540a [2020-08-22 23:04:41,598 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:04:41,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-08-22 23:04:41,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37da7ff65/a12bf52162a740d98d68ce8b1c7cef05/FLAG0f429540a [2020-08-22 23:04:41,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37da7ff65/a12bf52162a740d98d68ce8b1c7cef05 [2020-08-22 23:04:41,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:04:41,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:04:41,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:04:41,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:04:41,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:04:41,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:04:41" (1/1) ... [2020-08-22 23:04:41,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba7c7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:41, skipping insertion in model container [2020-08-22 23:04:41,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:04:41" (1/1) ... [2020-08-22 23:04:42,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:04:42,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:04:42,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:04:42,196 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:04:42,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:04:42,233 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:04:42,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42 WrapperNode [2020-08-22 23:04:42,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:04:42,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:04:42,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:04:42,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:04:42,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (1/1) ... [2020-08-22 23:04:42,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:04:42,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:04:42,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:04:42,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:04:42,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (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 [2020-08-22 23:04:42,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:04:42,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:04:42,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:04:42,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:04:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:04:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:04:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:04:42,705 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:04:42,705 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 23:04:42,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:04:42 BoogieIcfgContainer [2020-08-22 23:04:42,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:04:42,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:04:42,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:04:42,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:04:42,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:04:41" (1/3) ... [2020-08-22 23:04:42,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d24c49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:04:42, skipping insertion in model container [2020-08-22 23:04:42,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:04:42" (2/3) ... [2020-08-22 23:04:42,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d24c49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:04:42, skipping insertion in model container [2020-08-22 23:04:42,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:04:42" (3/3) ... [2020-08-22 23:04:42,732 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-08-22 23:04:42,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:04:42,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-22 23:04:42,766 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-22 23:04:42,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:04:42,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:04:42,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:04:42,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:04:42,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:04:42,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:04:42,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:04:42,796 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:04:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-08-22 23:04:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 23:04:42,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:04:42,833 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] [2020-08-22 23:04:42,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:04:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:04:42,840 INFO L82 PathProgramCache]: Analyzing trace with hash -627197159, now seen corresponding path program 1 times [2020-08-22 23:04:42,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:04:42,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178339760] [2020-08-22 23:04:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:04:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:04:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:04:43,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178339760] [2020-08-22 23:04:43,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:04:43,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 23:04:43,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440109711] [2020-08-22 23:04:43,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:04:43,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:04:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:04:43,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:04:43,121 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 6 states. [2020-08-22 23:04:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:04:43,371 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-08-22 23:04:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:04:43,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-22 23:04:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:04:43,385 INFO L225 Difference]: With dead ends: 61 [2020-08-22 23:04:43,385 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 23:04:43,389 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 [2020-08-22 23:04:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 23:04:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 23:04:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 23:04:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-08-22 23:04:43,444 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2020-08-22 23:04:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:04:43,445 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-08-22 23:04:43,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:04:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-08-22 23:04:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 23:04:43,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:04:43,447 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] [2020-08-22 23:04:43,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:04:43,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:04:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:04:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1662596629, now seen corresponding path program 1 times [2020-08-22 23:04:43,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:04:43,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718654781] [2020-08-22 23:04:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:04:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:04:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:04:43,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718654781] [2020-08-22 23:04:43,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:04:43,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 23:04:43,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856075037] [2020-08-22 23:04:43,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:04:43,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:04:43,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:04:43,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:04:43,551 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 6 states. [2020-08-22 23:04:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:04:43,731 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-08-22 23:04:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 23:04:43,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-08-22 23:04:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:04:43,734 INFO L225 Difference]: With dead ends: 46 [2020-08-22 23:04:43,734 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 23:04:43,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:04:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 23:04:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-22 23:04:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 23:04:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-08-22 23:04:43,749 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2020-08-22 23:04:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:04:43,750 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-08-22 23:04:43,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:04:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-08-22 23:04:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 23:04:43,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:04:43,752 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] [2020-08-22 23:04:43,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:04:43,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:04:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:04:43,753 INFO L82 PathProgramCache]: Analyzing trace with hash 792220297, now seen corresponding path program 1 times [2020-08-22 23:04:43,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:04:43,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591621203] [2020-08-22 23:04:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:04:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:04:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:04:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:04:43,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591621203] [2020-08-22 23:04:43,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:04:43,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:04:43,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383713357] [2020-08-22 23:04:43,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:04:43,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:04:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:04:43,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:04:43,925 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 8 states. [2020-08-22 23:04:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:04:44,404 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-22 23:04:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 23:04:44,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-08-22 23:04:44,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:04:44,406 INFO L225 Difference]: With dead ends: 72 [2020-08-22 23:04:44,406 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:04:44,407 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 [2020-08-22 23:04:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:04:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:04:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:04:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:04:44,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-08-22 23:04:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:04:44,409 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:04:44,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:04:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:04:44,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:04:44,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:04:44,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:04:45,589 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,590 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-08-22 23:04:45,590 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)|)) [2020-08-22 23:04:45,590 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,590 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,591 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,591 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,591 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:04:45,592 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:04:45,592 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 23:04:45,592 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-08-22 23:04:45,592 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:04:45,592 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:04:45,592 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)) [2020-08-22 23:04:45,595 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))) [2020-08-22 23:04:45,595 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))) [2020-08-22 23:04:45,595 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)) [2020-08-22 23:04:45,595 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)))) [2020-08-22 23:04:45,597 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))) [2020-08-22 23:04:45,597 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)) [2020-08-22 23:04:45,597 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,597 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))) [2020-08-22 23:04:45,598 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,598 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))) [2020-08-22 23:04:45,599 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)))) [2020-08-22 23:04:45,599 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))) [2020-08-22 23:04:45,599 INFO L264 CegarLoopResult]: At program point L98(line 98) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,599 INFO L264 CegarLoopResult]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) the Hoare annotation is: false [2020-08-22 23:04:45,600 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)) [2020-08-22 23:04:45,600 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))) [2020-08-22 23:04:45,600 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)) [2020-08-22 23:04:45,600 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))) [2020-08-22 23:04:45,600 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,601 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,601 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,601 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))) [2020-08-22 23:04:45,601 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)))) [2020-08-22 23:04:45,601 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-08-22 23:04:45,602 INFO L264 CegarLoopResult]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) the Hoare annotation is: false [2020-08-22 23:04:45,602 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-08-22 23:04:45,602 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)) [2020-08-22 23:04:45,602 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))) [2020-08-22 23:04:45,603 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,604 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-08-22 23:04:45,604 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)))) [2020-08-22 23:04:45,604 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)))) [2020-08-22 23:04:45,605 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)))) [2020-08-22 23:04:45,605 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: false [2020-08-22 23:04:45,605 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-08-22 23:04:45,605 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-08-22 23:04:45,606 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)) [2020-08-22 23:04:45,606 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,606 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)) [2020-08-22 23:04:45,606 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))) [2020-08-22 23:04:45,606 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)))) [2020-08-22 23:04:45,607 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,608 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: false [2020-08-22 23:04:45,608 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-22 23:04:45,609 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))) [2020-08-22 23:04:45,609 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)))) [2020-08-22 23:04:45,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:04:45 BoogieIcfgContainer [2020-08-22 23:04:45,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:04:45,652 INFO L168 Benchmark]: Toolchain (without parser) took 3665.77 ms. Allocated memory was 141.0 MB in the beginning and 245.4 MB in the end (delta: 104.3 MB). Free memory was 104.4 MB in the beginning and 178.9 MB in the end (delta: -74.5 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,653 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.31 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,655 INFO L168 Benchmark]: Boogie Preprocessor took 29.70 ms. Allocated memory is still 141.0 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,656 INFO L168 Benchmark]: RCFGBuilder took 445.80 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 168.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,657 INFO L168 Benchmark]: TraceAbstraction took 2936.56 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 168.0 MB in the beginning and 178.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:04:45,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.31 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.70 ms. Allocated memory is still 141.0 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.80 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 168.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2936.56 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 168.0 MB in the beginning and 178.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 109.1 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, 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, 0.5s 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, 0.1s HoareSimplificationTime, 55 FomulaSimplificationsInter, 393 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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...