/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=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:04:49,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:04:49,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:04:49,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:04:49,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:04:49,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:04:49,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:04:49,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:04:49,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:04:49,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:04:49,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:04:49,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:04:49,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:04:49,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:04:49,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:04:49,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:04:49,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:04:49,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:04:49,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:04:49,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:04:49,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:04:49,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:04:49,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:04:49,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:04:49,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:04:49,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:04:49,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:04:49,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:04:49,410 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 02:04:49,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:04:49,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:04:49,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:04:49,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:04:49,434 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:04:49,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:04:49,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:04:49,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:04:49,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:04:49,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:04:49,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:04:49,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:04:49,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:04:49,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:04:49,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:04:49,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:04:49,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:04:49,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:04:49,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:04:49,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:04:49,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:04:49,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:04:49,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:04:49,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:04:49,448 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=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:04:49,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:04:49,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:04:49,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:04:49,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:04:49,768 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:04:49,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-08-19 02:04:49,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704dfc102/5b07943fb70643cb919ee48d01a4f0b1/FLAG63b888a8a [2020-08-19 02:04:50,321 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:04:50,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-08-19 02:04:50,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704dfc102/5b07943fb70643cb919ee48d01a4f0b1/FLAG63b888a8a [2020-08-19 02:04:50,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704dfc102/5b07943fb70643cb919ee48d01a4f0b1 [2020-08-19 02:04:50,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:04:50,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:04:50,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:04:50,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:04:50,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:04:50,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:04:50" (1/1) ... [2020-08-19 02:04:50,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:50, skipping insertion in model container [2020-08-19 02:04:50,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:04:50" (1/1) ... [2020-08-19 02:04:50,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:04:50,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:04:50,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:04:50,970 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:04:50,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:04:51,005 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:04:51,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51 WrapperNode [2020-08-19 02:04:51,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:04:51,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:04:51,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:04:51,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:04:51,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (1/1) ... [2020-08-19 02:04:51,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:04:51,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:04:51,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:04:51,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:04:51,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (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 02:04:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:04:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:04:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:04:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:04:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:04:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:04:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:04:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:04:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:04:51,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:04:51,445 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:04:51,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:04:51 BoogieIcfgContainer [2020-08-19 02:04:51,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:04:51,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:04:51,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:04:51,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:04:51,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:04:50" (1/3) ... [2020-08-19 02:04:51,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fddbf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:04:51, skipping insertion in model container [2020-08-19 02:04:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:51" (2/3) ... [2020-08-19 02:04:51,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fddbf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:04:51, skipping insertion in model container [2020-08-19 02:04:51,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:04:51" (3/3) ... [2020-08-19 02:04:51,474 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-08-19 02:04:51,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:04:51,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:04:51,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:04:51,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:04:51,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:04:51,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:04:51,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:04:51,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:04:51,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:04:51,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:04:51,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:04:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 02:04:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 02:04:51,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:51,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:04:51,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-08-19 02:04:51,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:51,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807515805] [2020-08-19 02:04:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:51,763 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 02:04:51,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807515805] [2020-08-19 02:04:51,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:04:51,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:04:51,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050632582] [2020-08-19 02:04:51,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:04:51,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:04:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:04:51,784 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-19 02:04:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:51,873 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-19 02:04:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:04:51,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 02:04:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:51,883 INFO L225 Difference]: With dead ends: 35 [2020-08-19 02:04:51,883 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 02:04:51,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:04:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 02:04:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 02:04:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 02:04:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-19 02:04:51,925 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-08-19 02:04:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:51,926 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-19 02:04:51,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:04:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-19 02:04:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 02:04:51,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:51,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:04:51,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:04:51,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-08-19 02:04:51,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:51,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885266105] [2020-08-19 02:04:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,068 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 02:04:52,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885266105] [2020-08-19 02:04:52,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:04:52,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:04:52,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578553320] [2020-08-19 02:04:52,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:04:52,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:52,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:04:52,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:04:52,076 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-08-19 02:04:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:52,142 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-08-19 02:04:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:04:52,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-08-19 02:04:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:52,144 INFO L225 Difference]: With dead ends: 24 [2020-08-19 02:04:52,145 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 02:04:52,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:04:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 02:04:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-08-19 02:04:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 02:04:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-08-19 02:04:52,153 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-08-19 02:04:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:52,153 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-08-19 02:04:52,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:04:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-08-19 02:04:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:04:52,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:52,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:04:52,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:04:52,155 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:52,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-08-19 02:04:52,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:52,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224225297] [2020-08-19 02:04:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,496 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 02:04:52,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224225297] [2020-08-19 02:04:52,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:04:52,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:04:52,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917906785] [2020-08-19 02:04:52,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:04:52,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:04:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:04:52,500 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2020-08-19 02:04:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:52,709 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-08-19 02:04:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:04:52,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-08-19 02:04:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:52,711 INFO L225 Difference]: With dead ends: 26 [2020-08-19 02:04:52,712 INFO L226 Difference]: Without dead ends: 20 [2020-08-19 02:04:52,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:04:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-19 02:04:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-19 02:04:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 02:04:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-19 02:04:52,721 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-08-19 02:04:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:52,724 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-19 02:04:52,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:04:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-19 02:04:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:04:52,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:52,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:04:52,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:04:52,726 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-08-19 02:04:52,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:52,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059268239] [2020-08-19 02:04:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:52,956 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 02:04:52,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059268239] [2020-08-19 02:04:52,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:04:52,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:04:52,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695595245] [2020-08-19 02:04:52,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:04:52,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:04:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:04:52,959 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2020-08-19 02:04:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:53,141 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-19 02:04:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:04:53,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-08-19 02:04:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:53,142 INFO L225 Difference]: With dead ends: 27 [2020-08-19 02:04:53,143 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 02:04:53,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:04:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 02:04:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-19 02:04:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 02:04:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-19 02:04:53,149 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-08-19 02:04:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:53,150 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-19 02:04:53,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:04:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-19 02:04:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:04:53,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:53,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:04:53,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:04:53,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:53,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2070630979, now seen corresponding path program 2 times [2020-08-19 02:04:53,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:53,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223828826] [2020-08-19 02:04:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:53,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:04:53,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223828826] [2020-08-19 02:04:53,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:04:53,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 02:04:53,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433504864] [2020-08-19 02:04:53,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:04:53,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:04:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:04:53,326 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-08-19 02:04:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:53,351 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-08-19 02:04:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:04:53,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-19 02:04:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:53,352 INFO L225 Difference]: With dead ends: 19 [2020-08-19 02:04:53,353 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:04:53,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:04:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:04:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:04:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:04:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:04:53,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-19 02:04:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:53,355 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:04:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:04:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:04:53,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:04:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:04:53,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:04:53,457 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:04:53,458 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 02:04:53,458 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:04:53,458 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:04:53,458 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:04:53,458 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:04:53,458 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:04:53,458 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 02:04:53,459 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem5|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) [2020-08-19 02:04:53,459 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-08-19 02:04:53,459 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-08-19 02:04:53,459 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-08-19 02:04:53,459 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-08-19 02:04:53,460 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (<= main_~SIZE~0 main_~j~0) (<= (div main_~j~0 4294967296) 0) (< 0 (+ (div main_~SIZE~0 4294967296) 1))) (and (<= 1 main_~SIZE~0) (= main_~j~0 0) (<= main_~SIZE~0 1) (= |main_~#array~0.offset| 0))) [2020-08-19 02:04:53,460 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-08-19 02:04:53,460 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-08-19 02:04:53,460 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-19 02:04:53,460 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-19 02:04:53,460 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 02:04:53,461 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-19 02:04:53,461 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-19 02:04:53,461 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-19 02:04:53,472 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:04:53,479 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:04:53,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:04:53 BoogieIcfgContainer [2020-08-19 02:04:53,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:04:53,485 INFO L168 Benchmark]: Toolchain (without parser) took 2716.69 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 102.7 MB in the beginning and 125.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,486 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.05 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,488 INFO L168 Benchmark]: Boogie Preprocessor took 113.89 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,489 INFO L168 Benchmark]: RCFGBuilder took 328.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,490 INFO L168 Benchmark]: TraceAbstraction took 2018.55 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.3 MB in the beginning and 127.3 MB in the end (delta: 38.0 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:53,494 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.05 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.89 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2018.55 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.3 MB in the beginning and 127.3 MB in the end (delta: 38.0 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-08-19 02:04:53,504 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 02:04:53,504 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((menor <= unknown-#memory_int-unknown[array][array] && SIZE <= j) && j / 4294967296 <= 0) && 0 < SIZE / 4294967296 + 1) || (((1 <= SIZE && j == 0) && SIZE <= 1) && array == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 27 SDslu, 91 SDs, 0 SdLazy, 214 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 64 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 3741 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/7 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...