/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:47:37,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:47:37,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:47:37,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:47:37,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:47:37,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:47:37,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:47:37,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:47:37,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:47:37,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:47:37,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:47:37,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:47:37,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:47:37,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:47:37,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:47:37,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:47:37,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:47:37,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:47:37,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:47:37,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:47:37,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:47:37,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:47:37,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:47:37,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:47:37,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:47:37,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:47:37,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:47:37,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:47:37,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:47:37,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 04:47:37,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:47:37,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:47:37,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:47:37,799 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 [2020-08-22 04:47:37,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:47:37,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:47:37,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:47:37,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:47:37,840 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:47:37,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:47:37,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:47:37,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:47:37,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:47:37,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:47:37,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:47:37,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:47:37,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:47:37,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:47:37,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:47:37,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:47:37,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:47:37,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:47:37,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:47:37,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:47:37,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:47:37,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:47:37,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:47:37,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:47:37,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:47:37,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:47:37,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:47:37,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:47:37,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:47:37,847 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:47:38,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:47:38,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:47:38,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:47:38,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:47:38,136 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:47:38,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-08-22 04:47:38,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ae3b147/30d9ba97547b43b182e315840d1401f6/FLAG7f2ab5e99 [2020-08-22 04:47:38,677 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:47:38,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-08-22 04:47:38,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ae3b147/30d9ba97547b43b182e315840d1401f6/FLAG7f2ab5e99 [2020-08-22 04:47:39,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ae3b147/30d9ba97547b43b182e315840d1401f6 [2020-08-22 04:47:39,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:47:39,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:47:39,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:47:39,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:47:39,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:47:39,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216a6867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39, skipping insertion in model container [2020-08-22 04:47:39,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:47:39,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:47:39,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:47:39,280 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:47:39,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:47:39,312 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:47:39,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39 WrapperNode [2020-08-22 04:47:39,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:47:39,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:47:39,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:47:39,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:47:39,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (1/1) ... [2020-08-22 04:47:39,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:47:39,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:47:39,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:47:39,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:47:39,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (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 [2020-08-22 04:47:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:47:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:47:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:47:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 04:47:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:47:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:47:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:47:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:47:39,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:47:39,665 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 04:47:39,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:39 BoogieIcfgContainer [2020-08-22 04:47:39,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:47:39,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:47:39,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:47:39,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:47:39,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:39" (1/3) ... [2020-08-22 04:47:39,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351f739c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:39, skipping insertion in model container [2020-08-22 04:47:39,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:39" (2/3) ... [2020-08-22 04:47:39,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351f739c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:39, skipping insertion in model container [2020-08-22 04:47:39,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:39" (3/3) ... [2020-08-22 04:47:39,697 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-08-22 04:47:39,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:47:39,722 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:47:39,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:47:39,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:47:39,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:47:39,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:47:39,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:47:39,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:47:39,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:47:39,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:47:39,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:47:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-22 04:47:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 04:47:39,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:47:39,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:47:39,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:47:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:47:39,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1608903343, now seen corresponding path program 1 times [2020-08-22 04:47:39,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:47:39,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394234890] [2020-08-22 04:47:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:47:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:47:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:39,973 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 04:47:39,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394234890] [2020-08-22 04:47:39,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:47:39,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:47:39,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55455251] [2020-08-22 04:47:39,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:47:39,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:47:40,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:47:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:47:40,010 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-08-22 04:47:40,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:47:40,065 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-08-22 04:47:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:47:40,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-22 04:47:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:47:40,094 INFO L225 Difference]: With dead ends: 32 [2020-08-22 04:47:40,094 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 04:47:40,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:47:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 04:47:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-22 04:47:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-22 04:47:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-22 04:47:40,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-22 04:47:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:47:40,143 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-22 04:47:40,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:47:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-22 04:47:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 04:47:40,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:47:40,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:47:40,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:47:40,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:47:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:47:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1628066164, now seen corresponding path program 1 times [2020-08-22 04:47:40,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:47:40,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164251034] [2020-08-22 04:47:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:47:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:47:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:47:40,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164251034] [2020-08-22 04:47:40,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:47:40,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 04:47:40,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507649888] [2020-08-22 04:47:40,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:47:40,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:47:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:47:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:47:40,371 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2020-08-22 04:47:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:47:40,473 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-22 04:47:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:47:40,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-08-22 04:47:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:47:40,475 INFO L225 Difference]: With dead ends: 19 [2020-08-22 04:47:40,475 INFO L226 Difference]: Without dead ends: 14 [2020-08-22 04:47:40,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:47:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-22 04:47:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-22 04:47:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-22 04:47:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-22 04:47:40,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-08-22 04:47:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:47:40,483 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-22 04:47:40,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:47:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-22 04:47:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 04:47:40,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:47:40,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:47:40,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:47:40,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:47:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:47:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1105094223, now seen corresponding path program 2 times [2020-08-22 04:47:40,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:47:40,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117983666] [2020-08-22 04:47:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:47:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:47:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:47:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:47:40,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117983666] [2020-08-22 04:47:40,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:47:40,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 04:47:40,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692425908] [2020-08-22 04:47:40,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:47:40,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:47:40,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:47:40,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:47:40,638 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-08-22 04:47:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:47:40,751 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-08-22 04:47:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:47:40,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-08-22 04:47:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:47:40,752 INFO L225 Difference]: With dead ends: 14 [2020-08-22 04:47:40,752 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 04:47:40,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:47:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 04:47:40,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 04:47:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 04:47:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 04:47:40,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-08-22 04:47:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:47:40,755 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 04:47:40,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:47:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 04:47:40,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 04:47:40,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:47:40,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 04:47:40,804 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 04:47:40,804 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 04:47:40,804 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 04:47:40,805 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 04:47:40,805 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 04:47:40,805 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 04:47:40,805 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 04:47:40,805 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 04:47:40,806 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 04:47:40,806 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 04:47:40,806 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-08-22 04:47:40,806 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-08-22 04:47:40,806 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-22 04:47:40,807 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-22 04:47:40,807 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~hi~0 .cse0) (< main_~lo~0 (+ main_~hi~0 1)) (<= .cse0 main_~hi~0))) [2020-08-22 04:47:40,807 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (and (< main_~lo~0 (+ main_~hi~0 1)) (<= main_~hi~0 main_~lo~0)) [2020-08-22 04:47:40,808 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-08-22 04:47:40,808 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 04:47:40,808 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 04:47:40,808 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 04:47:40,808 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 04:47:40,809 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 04:47:40,809 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 04:47:40,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:47:40 BoogieIcfgContainer [2020-08-22 04:47:40,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:47:40,831 INFO L168 Benchmark]: Toolchain (without parser) took 1761.63 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 92.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,832 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.26 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,834 INFO L168 Benchmark]: Boogie Preprocessor took 101.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 181.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,835 INFO L168 Benchmark]: RCFGBuilder took 255.36 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 169.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,836 INFO L168 Benchmark]: TraceAbstraction took 1148.84 ms. Allocated memory is still 202.9 MB. Free memory was 168.2 MB in the beginning and 92.5 MB in the end (delta: 75.7 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:47:40,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.26 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 181.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.36 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 169.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1148.84 ms. Allocated memory is still 202.9 MB. Free memory was 168.2 MB in the beginning and 92.5 MB in the end (delta: 75.7 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (hi <= 2 * mid + lo && lo < hi + 1) && 2 * mid + lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 7 SDslu, 73 SDs, 0 SdLazy, 43 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 34 HoareAnnotationTreeSize, 9 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/4 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...