/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:28:31,294 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 00:28:31,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:28:31,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:28:31,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:28:31,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:28:31,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:28:31,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:28:31,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:28:31,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:28:31,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:28:31,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:28:31,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:28:31,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:28:31,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:28:31,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:28:31,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:28:31,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:28:31,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:28:31,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:28:31,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:28:31,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:28:31,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:28:31,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:28:31,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:28:31,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:28:31,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:28:31,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:28:31,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:28:31,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:28:31,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:28:31,456 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:28:31,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:28:31,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:28:31,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:28:31,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:28:31,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:28:31,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:28:31,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:28:31,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:28:31,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:28:31,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:28:31,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:28:31,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:28:31,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:28:31,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:28:31,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:28:31,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:28:31,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:28:31,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:28:31,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:28:31,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:28:31,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:28:31,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:28:31,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:28:31,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:28:31,778 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:28:31,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-08-19 00:28:31,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/250cd96d3/abbd8ecea4754bbeb0d1c37fcb5f27b1/FLAG7bcda3284 [2020-08-19 00:28:32,256 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:28:32,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.i [2020-08-19 00:28:32,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/250cd96d3/abbd8ecea4754bbeb0d1c37fcb5f27b1/FLAG7bcda3284 [2020-08-19 00:28:32,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/250cd96d3/abbd8ecea4754bbeb0d1c37fcb5f27b1 [2020-08-19 00:28:32,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:28:32,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:28:32,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:28:32,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:28:32,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:28:32,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:32,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b9bdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32, skipping insertion in model container [2020-08-19 00:28:32,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:32,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:28:32,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:28:32,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:28:32,895 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:28:32,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:28:32,935 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:28:32,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32 WrapperNode [2020-08-19 00:28:32,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:28:32,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:28:32,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:28:32,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:28:32,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:32,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... [2020-08-19 00:28:33,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:28:33,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:28:33,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:28:33,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:28:33,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:28:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:28:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:28:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:28:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:28:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:28:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:28:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:28:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:28:33,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:28:33,335 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:28:33,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:28:33 BoogieIcfgContainer [2020-08-19 00:28:33,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:28:33,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:28:33,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:28:33,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:28:33,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:28:32" (1/3) ... [2020-08-19 00:28:33,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796867d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:28:33, skipping insertion in model container [2020-08-19 00:28:33,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:28:32" (2/3) ... [2020-08-19 00:28:33,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796867d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:28:33, skipping insertion in model container [2020-08-19 00:28:33,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:28:33" (3/3) ... [2020-08-19 00:28:33,348 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-08-19 00:28:33,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:28:33,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:28:33,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:28:33,409 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:28:33,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:28:33,409 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:28:33,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:28:33,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:28:33,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:28:33,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:28:33,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:28:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 00:28:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:28:33,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:33,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:33,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:33,443 INFO L82 PathProgramCache]: Analyzing trace with hash -42161200, now seen corresponding path program 1 times [2020-08-19 00:28:33,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:33,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111379443] [2020-08-19 00:28:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:33,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111379443] [2020-08-19 00:28:33,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:28:33,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:28:33,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731229535] [2020-08-19 00:28:33,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:28:33,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:33,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:28:33,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:28:33,824 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-08-19 00:28:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:33,974 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2020-08-19 00:28:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:28:33,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 00:28:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:33,987 INFO L225 Difference]: With dead ends: 49 [2020-08-19 00:28:33,988 INFO L226 Difference]: Without dead ends: 14 [2020-08-19 00:28:33,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:28:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-19 00:28:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-19 00:28:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-19 00:28:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-19 00:28:34,043 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-08-19 00:28:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:34,043 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-19 00:28:34,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:28:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-19 00:28:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 00:28:34,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:34,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:34,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:28:34,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash 219103455, now seen corresponding path program 1 times [2020-08-19 00:28:34,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:34,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874261870] [2020-08-19 00:28:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:34,260 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 00:28:34,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874261870] [2020-08-19 00:28:34,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:28:34,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:28:34,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275974623] [2020-08-19 00:28:34,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:28:34,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:34,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:28:34,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:28:34,265 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-08-19 00:28:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:34,400 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-08-19 00:28:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:28:34,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-08-19 00:28:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:34,402 INFO L225 Difference]: With dead ends: 21 [2020-08-19 00:28:34,402 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 00:28:34,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:28:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 00:28:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 00:28:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 00:28:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-08-19 00:28:34,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-08-19 00:28:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:34,410 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-08-19 00:28:34,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:28:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-08-19 00:28:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 00:28:34,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:34,411 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:34,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:28:34,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash -271626832, now seen corresponding path program 2 times [2020-08-19 00:28:34,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:34,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513016335] [2020-08-19 00:28:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:34,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513016335] [2020-08-19 00:28:34,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:28:34,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 00:28:34,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426033813] [2020-08-19 00:28:34,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:28:34,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:28:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:28:34,676 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-08-19 00:28:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:34,774 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-08-19 00:28:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:28:34,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-08-19 00:28:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:34,776 INFO L225 Difference]: With dead ends: 22 [2020-08-19 00:28:34,776 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 00:28:34,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:28:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 00:28:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 00:28:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 00:28:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-19 00:28:34,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-08-19 00:28:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:34,785 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-19 00:28:34,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:28:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-19 00:28:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:28:34,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:28:34,786 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:28:34,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:28:34,787 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:28:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:28:34,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1695603455, now seen corresponding path program 3 times [2020-08-19 00:28:34,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:28:34,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955379623] [2020-08-19 00:28:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:28:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:28:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:28:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:28:35,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955379623] [2020-08-19 00:28:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:28:35,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:28:35,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544462405] [2020-08-19 00:28:35,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:28:35,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:28:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:28:35,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:28:35,024 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2020-08-19 00:28:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:28:35,111 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-08-19 00:28:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:28:35,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-08-19 00:28:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:28:35,112 INFO L225 Difference]: With dead ends: 16 [2020-08-19 00:28:35,112 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:28:35,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:28:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:28:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:28:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:28:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:28:35,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-08-19 00:28:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:28:35,117 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:28:35,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:28:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:28:35,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:28:35,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:28:35,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:28:35,197 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 00:28:35,197 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:28:35,197 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:28:35,198 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:28:35,198 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:28:35,198 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:28:35,198 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:28:35,198 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 00:28:35,198 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:28:35,199 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:28:35,200 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2020-08-19 00:28:35,200 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= main_~y~0 0) [2020-08-19 00:28:35,200 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 23) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point L20-3(lines 13 28) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:28:35,201 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 00:28:35,202 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 00:28:35,202 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:28:35,202 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 00:28:35,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:28:35 BoogieIcfgContainer [2020-08-19 00:28:35,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:28:35,221 INFO L168 Benchmark]: Toolchain (without parser) took 2578.14 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.7 MB in the beginning and 138.8 MB in the end (delta: -36.1 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,223 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 93.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,225 INFO L168 Benchmark]: Boogie Preprocessor took 143.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.1 MB in the beginning and 182.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,226 INFO L168 Benchmark]: RCFGBuilder took 256.76 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,227 INFO L168 Benchmark]: TraceAbstraction took 1878.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.5 MB in the beginning and 138.8 MB in the end (delta: 29.7 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:28:35,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 93.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.1 MB in the beginning and 182.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.76 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1878.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.5 MB in the beginning and 138.8 MB in the end (delta: 29.7 MB). Peak memory consumption was 61.1 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: 20]: Loop Invariant Derived loop invariant: x + j <= y + i && y + i <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 31 SDslu, 194 SDs, 0 SdLazy, 150 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 23 HoareAnnotationTreeSize, 11 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/10 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...