/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:19:59,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:19:59,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:19:59,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:19:59,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:19:59,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:19:59,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:19:59,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:19:59,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:19:59,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:19:59,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:19:59,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:19:59,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:19:59,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:19:59,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:19:59,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:19:59,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:19:59,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:19:59,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:19:59,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:20:00,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:20:00,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:20:00,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:20:00,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:20:00,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 05:20:00,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:20:00,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:20:00,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:20:00,027 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 05:20:00,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:20:00,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:20:00,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:20:00,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:20:00,077 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:20:00,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:20:00,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:20:00,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:20:00,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:20:00,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:20:00,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:20:00,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:20:00,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:20:00,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:20:00,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:20:00,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:20:00,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:20:00,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:20:00,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:20:00,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:20:00,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:20:00,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:20:00,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:20:00,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:20:00,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:20:00,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:20:00,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:20:00,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:20:00,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:20:00,084 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:20:00,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:20:00,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:20:00,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:20:00,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:20:00,390 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:20:00,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-08-19 05:20:00,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4fef77e/21deadb21ef04f3f885d66557af6ea63/FLAGffbeb7806 [2020-08-19 05:20:00,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:20:00,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/half.i [2020-08-19 05:20:00,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4fef77e/21deadb21ef04f3f885d66557af6ea63/FLAGffbeb7806 [2020-08-19 05:20:01,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4fef77e/21deadb21ef04f3f885d66557af6ea63 [2020-08-19 05:20:01,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:20:01,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:20:01,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:20:01,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:20:01,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:20:01,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a7a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01, skipping insertion in model container [2020-08-19 05:20:01,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:20:01,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:20:01,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:20:01,523 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:20:01,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:20:01,553 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:20:01,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01 WrapperNode [2020-08-19 05:20:01,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:20:01,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:20:01,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:20:01,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:20:01,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (1/1) ... [2020-08-19 05:20:01,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:20:01,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:20:01,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:20:01,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:20:01,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (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 05:20:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:20:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:20:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:20:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 05:20:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:20:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:20:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:20:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:20:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 05:20:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:20:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:20:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:20:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:20:01,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:20:01,965 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 05:20:01,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:20:01 BoogieIcfgContainer [2020-08-19 05:20:01,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:20:01,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:20:01,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:20:01,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:20:01,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:20:01" (1/3) ... [2020-08-19 05:20:01,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e931d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:20:01, skipping insertion in model container [2020-08-19 05:20:01,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:01" (2/3) ... [2020-08-19 05:20:01,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e931d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:20:01, skipping insertion in model container [2020-08-19 05:20:01,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:20:01" (3/3) ... [2020-08-19 05:20:01,978 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-08-19 05:20:01,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:20:01,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:20:02,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:20:02,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:20:02,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:20:02,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:20:02,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:20:02,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:20:02,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:20:02,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:20:02,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:20:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-19 05:20:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 05:20:02,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:02,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:02,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-08-19 05:20:02,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:02,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066388460] [2020-08-19 05:20:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,182 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 05:20:02,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066388460] [2020-08-19 05:20:02,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:20:02,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-19 05:20:02,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851613124] [2020-08-19 05:20:02,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-19 05:20:02,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:02,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-19 05:20:02,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 05:20:02,209 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-19 05:20:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:02,233 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-19 05:20:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-19 05:20:02,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-19 05:20:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:02,242 INFO L225 Difference]: With dead ends: 33 [2020-08-19 05:20:02,243 INFO L226 Difference]: Without dead ends: 14 [2020-08-19 05:20:02,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 05:20:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-19 05:20:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-19 05:20:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-19 05:20:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-19 05:20:02,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-08-19 05:20:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:02,284 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-19 05:20:02,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-19 05:20:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-19 05:20:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 05:20:02,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:02,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:02,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:20:02,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:02,287 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-08-19 05:20:02,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:02,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935946741] [2020-08-19 05:20:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,467 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 05:20:02,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935946741] [2020-08-19 05:20:02,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:20:02,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:20:02,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782326492] [2020-08-19 05:20:02,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:20:02,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:02,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:20:02,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:20:02,474 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-08-19 05:20:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:02,716 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-08-19 05:20:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:20:02,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-08-19 05:20:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:02,720 INFO L225 Difference]: With dead ends: 26 [2020-08-19 05:20:02,721 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 05:20:02,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:20:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 05:20:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-08-19 05:20:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 05:20:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-19 05:20:02,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-08-19 05:20:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:02,730 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-19 05:20:02,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:20:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-19 05:20:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 05:20:02,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:02,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:02,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:20:02,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-08-19 05:20:02,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:02,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989962728] [2020-08-19 05:20:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989962728] [2020-08-19 05:20:02,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:02,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 05:20:02,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515015136] [2020-08-19 05:20:02,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:20:02,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:20:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:20:02,838 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-08-19 05:20:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:02,928 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-08-19 05:20:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:20:02,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-08-19 05:20:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:02,930 INFO L225 Difference]: With dead ends: 26 [2020-08-19 05:20:02,930 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 05:20:02,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:20:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 05:20:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 05:20:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 05:20:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 05:20:02,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-08-19 05:20:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:02,937 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 05:20:02,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:20:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 05:20:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 05:20:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:02,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:02,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:20:02,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-08-19 05:20:02,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:02,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856719194] [2020-08-19 05:20:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:03,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856719194] [2020-08-19 05:20:03,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:03,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:20:03,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901781844] [2020-08-19 05:20:03,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:20:03,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:03,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:20:03,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:20:03,249 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 11 states. [2020-08-19 05:20:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:03,433 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-08-19 05:20:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:20:03,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-08-19 05:20:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:03,434 INFO L225 Difference]: With dead ends: 27 [2020-08-19 05:20:03,434 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:20:03,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:20:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:20:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:20:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:20:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:20:03,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-19 05:20:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:03,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:20:03,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:20:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:20:03,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:20:03,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:20:03,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:20:03,513 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 05:20:03,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:20:03,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:20:03,514 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 05:20:03,514 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 05:20:03,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 05:20:03,514 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:03,514 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 05:20:03,514 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 05:20:03,515 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-08-19 05:20:03,516 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (let ((.cse2 (<= .cse0 main_~i~0)) (.cse3 (<= main_~i~0 .cse0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~k~0)))) (and .cse2 .cse3 (< main_~n~0 (+ main_~k~0 1))) (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse2 .cse3)))) [2020-08-19 05:20:03,516 INFO L264 CegarLoopResult]: At program point L18-4(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse2)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and (<= .cse2 main_~i~0) .cse0 .cse1 (< main_~n~0 (+ main_~k~0 1)))))) [2020-08-19 05:20:03,516 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2020-08-19 05:20:03,516 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 05:20:03,517 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 05:20:03,517 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 05:20:03,517 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 05:20:03,517 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 05:20:03,517 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 05:20:03,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:20:03 BoogieIcfgContainer [2020-08-19 05:20:03,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:20:03,540 INFO L168 Benchmark]: Toolchain (without parser) took 2219.30 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.8 MB in the beginning and 162.4 MB in the end (delta: -59.6 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,541 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.41 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,543 INFO L168 Benchmark]: Boogie Preprocessor took 110.52 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,544 INFO L168 Benchmark]: RCFGBuilder took 304.03 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,545 INFO L168 Benchmark]: TraceAbstraction took 1566.40 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 167.2 MB in the beginning and 162.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:03,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.41 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.52 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.03 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1566.40 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 167.2 MB in the beginning and 162.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 38.3 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: 18]: Loop Invariant Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k) || ((2 * n <= i && i <= 2 * n) && n < k + 1)) || (((0 <= n && n <= 0) && 2 * n <= i) && i <= 2 * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 25 SDslu, 128 SDs, 0 SdLazy, 144 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 96 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 3243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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...