/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:28:10,060 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 00:28:10,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:28:10,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:28:10,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:28:10,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:28:10,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:28:10,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:28:10,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:28:10,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:28:10,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:28:10,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:28:10,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:28:10,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:28:10,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:28:10,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:28:10,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:28:10,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:28:10,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:28:10,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:28:10,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:28:10,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:28:10,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:28:10,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:28:10,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:28:10,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:28:10,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:28:10,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:28:10,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:28:10,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:28:10,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:28:10,217 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:28:10,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:28:10,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:28:10,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:28:10,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:28:10,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:28:10,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:28:10,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:28:10,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:28:10,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:28:10,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:28:10,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:28:10,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:28:10,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:28:10,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:28:10,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:28:10,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:28:10,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:28:10,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:28:10,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:28:10,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:28:10,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:28:10,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:28:10,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:28:10,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:28:10,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:28:10,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:28:10,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:28:10,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:28:10,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:28:10,563 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:28:10,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-08-19 00:28:10,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b680aecc/231a8bc6162e4dd89ecce66a14738788/FLAG2ce8b1d36 [2020-08-19 00:28:11,080 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:28:11,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-08-19 00:28:11,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b680aecc/231a8bc6162e4dd89ecce66a14738788/FLAG2ce8b1d36 [2020-08-19 00:28:11,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b680aecc/231a8bc6162e4dd89ecce66a14738788 [2020-08-19 00:28:11,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:28:11,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:28:11,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:28:11,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:28:11,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:28:11,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b610eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11, skipping insertion in model container [2020-08-19 00:28:11,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:28:11,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:28:11,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:28:11,321 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:28:11,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:28:11,352 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:28:11,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11 WrapperNode [2020-08-19 00:28:11,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:28:11,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:28:11,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:28:11,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:28:11,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (1/1) ... [2020-08-19 00:28:11,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:28:11,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:28:11,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:28:11,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:28:11,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (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 [2020-08-19 00:28:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:28:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:28:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:28:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:28:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:28:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:28:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:28:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:28:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:28:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:28:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:28:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:28:11,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:28:11,758 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 00:28:11,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:28:11 BoogieIcfgContainer [2020-08-19 00:28:11,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:28:11,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:28:11,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:28:11,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:28:11,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:28:11" (1/3) ... [2020-08-19 00:28:11,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc595da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:28:11, skipping insertion in model container [2020-08-19 00:28:11,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:11" (2/3) ... [2020-08-19 00:28:11,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc595da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:28:11, skipping insertion in model container [2020-08-19 00:28:11,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:28:11" (3/3) ... [2020-08-19 00:28:11,771 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-08-19 00:28:11,799 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:28:11,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-19 00:28:11,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-19 00:28:11,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:28:11,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:28:11,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:28:11,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:28:11,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:28:11,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:28:11,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:28:11,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:28:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-19 00:28:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 00:28:11,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:11,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:11,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1747837512, now seen corresponding path program 1 times [2020-08-19 00:28:11,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:11,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299051542] [2020-08-19 00:28:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:12,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299051542] [2020-08-19 00:28:12,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:28:12,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:28:12,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043938879] [2020-08-19 00:28:12,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:28:12,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:12,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:28:12,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:28:12,195 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-19 00:28:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:12,343 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-08-19 00:28:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:28:12,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-19 00:28:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:12,357 INFO L225 Difference]: With dead ends: 30 [2020-08-19 00:28:12,357 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 00:28:12,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:28:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 00:28:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 00:28:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 00:28:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-08-19 00:28:12,409 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-08-19 00:28:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:12,410 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-08-19 00:28:12,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:28:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-08-19 00:28:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:28:12,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:12,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:12,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:28:12,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:12,413 INFO L82 PathProgramCache]: Analyzing trace with hash -339542086, now seen corresponding path program 1 times [2020-08-19 00:28:12,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:12,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378795286] [2020-08-19 00:28:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:12,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378795286] [2020-08-19 00:28:12,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:28:12,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:28:12,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075422499] [2020-08-19 00:28:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:28:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:12,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:28:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:28:12,503 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-08-19 00:28:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:12,576 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-08-19 00:28:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:28:12,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-19 00:28:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:12,578 INFO L225 Difference]: With dead ends: 19 [2020-08-19 00:28:12,578 INFO L226 Difference]: Without dead ends: 17 [2020-08-19 00:28:12,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:28:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-19 00:28:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-08-19 00:28:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 00:28:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 00:28:12,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-19 00:28:12,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:12,586 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 00:28:12,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:28:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 00:28:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 00:28:12,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:12,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:12,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:28:12,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:12,589 INFO L82 PathProgramCache]: Analyzing trace with hash 117666302, now seen corresponding path program 1 times [2020-08-19 00:28:12,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:12,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295563982] [2020-08-19 00:28:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:12,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295563982] [2020-08-19 00:28:12,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:28:12,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:28:12,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600402107] [2020-08-19 00:28:12,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:28:12,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:28:12,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:28:12,722 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-08-19 00:28:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:12,980 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2020-08-19 00:28:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:28:12,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-19 00:28:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:12,982 INFO L225 Difference]: With dead ends: 25 [2020-08-19 00:28:12,982 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:28:12,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:28:12,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:28:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:28:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:28:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:28:12,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-08-19 00:28:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:12,984 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:28:12,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:28:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:28:12,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:28:12,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:28:12,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:28:13,144 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:28:13,145 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)|)) [2020-08-19 00:28:13,145 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:28:13,145 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:28:13,145 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:28:13,145 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:28:13,145 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-19 00:28:13,146 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-19 00:28:13,147 INFO L268 CegarLoopResult]: For program point L31(lines 31 87) no Hoare annotation was computed. [2020-08-19 00:28:13,147 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-08-19 00:28:13,147 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))) [2020-08-19 00:28:13,147 INFO L268 CegarLoopResult]: For program point L60(lines 60 68) no Hoare annotation was computed. [2020-08-19 00:28:13,147 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 100) no Hoare annotation was computed. [2020-08-19 00:28:13,147 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-19 00:28:13,148 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-19 00:28:13,148 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 100) no Hoare annotation was computed. [2020-08-19 00:28:13,148 INFO L268 CegarLoopResult]: For program point L44(lines 44 85) no Hoare annotation was computed. [2020-08-19 00:28:13,148 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 .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1)) (and .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2))) [2020-08-19 00:28:13,149 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-08-19 00:28:13,149 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) no Hoare annotation was computed. [2020-08-19 00:28:13,149 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-08-19 00:28:13,149 INFO L268 CegarLoopResult]: For program point L24(lines 24 94) no Hoare annotation was computed. [2020-08-19 00:28:13,149 INFO L268 CegarLoopResult]: For program point L74(lines 74 83) no Hoare annotation was computed. [2020-08-19 00:28:13,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:28:13 BoogieIcfgContainer [2020-08-19 00:28:13,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:28:13,175 INFO L168 Benchmark]: Toolchain (without parser) took 2053.93 ms. Allocated memory was 141.6 MB in the beginning and 232.8 MB in the end (delta: 91.2 MB). Free memory was 103.7 MB in the beginning and 179.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:13,176 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:28:13,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.81 ms. Allocated memory is still 141.6 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:13,178 INFO L168 Benchmark]: Boogie Preprocessor took 115.32 ms. Allocated memory was 141.6 MB in the beginning and 206.6 MB in the end (delta: 65.0 MB). Free memory was 93.4 MB in the beginning and 184.7 MB in the end (delta: -91.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:13,179 INFO L168 Benchmark]: RCFGBuilder took 293.56 ms. Allocated memory is still 206.6 MB. Free memory was 184.7 MB in the beginning and 170.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:13,180 INFO L168 Benchmark]: TraceAbstraction took 1407.94 ms. Allocated memory was 206.6 MB in the beginning and 232.8 MB in the end (delta: 26.2 MB). Free memory was 169.8 MB in the beginning and 179.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:13,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.81 ms. Allocated memory is still 141.6 MB. Free memory was 103.3 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.32 ms. Allocated memory was 141.6 MB in the beginning and 206.6 MB in the end (delta: 65.0 MB). Free memory was 93.4 MB in the beginning and 184.7 MB in the end (delta: -91.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.56 ms. Allocated memory is still 206.6 MB. Free memory was 184.7 MB in the beginning and 170.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1407.94 ms. Allocated memory was 206.6 MB in the beginning and 232.8 MB in the end (delta: 26.2 MB). Free memory was 169.8 MB in the beginning and 179.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.5 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: (((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && __VERIFIER_assert__cond == 1) || ((((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 91 SDslu, 50 SDs, 0 SdLazy, 73 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 77 HoareAnnotationTreeSize, 7 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1252 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...