/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:30:17,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:30:17,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:30:17,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:30:17,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:30:17,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:30:17,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:30:17,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:30:17,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:30:17,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:30:17,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:30:17,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:30:17,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:30:17,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:30:17,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:30:17,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:30:17,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:30:17,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:30:17,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:30:17,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:30:17,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:30:17,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:30:17,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:30:17,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:30:17,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:30:17,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:30:17,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:30:17,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:30:17,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:30:17,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:30:17,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:30:17,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:30:17,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:30:17,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:30:17,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:30:17,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:30:17,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:30:17,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:30:17,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:30:17,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:30:17,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:30:17,792 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 [2020-09-21 11:30:17,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:30:17,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:30:17,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:30:17,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:30:17,822 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:30:17,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:30:17,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:30:17,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:30:17,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:30:17,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:30:17,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:30:17,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:30:17,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:30:17,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:30:17,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:30:17,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:30:17,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:30:17,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:30:17,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:30:17,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:30:17,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:30:17,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:30:17,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:30:17,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:30:17,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:30:17,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:30:17,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:30:17,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:30:17,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:30:17,827 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:30:18,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:30:18,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:30:18,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:30:18,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:30:18,381 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:30:18,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-21 11:30:18,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147696027/a50597f1db864073b15a57ee3f3087ad/FLAG3c033d4c3 [2020-09-21 11:30:19,075 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:30:19,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-21 11:30:19,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147696027/a50597f1db864073b15a57ee3f3087ad/FLAG3c033d4c3 [2020-09-21 11:30:19,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147696027/a50597f1db864073b15a57ee3f3087ad [2020-09-21 11:30:19,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:30:19,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:30:19,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:19,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:30:19,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:30:19,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19, skipping insertion in model container [2020-09-21 11:30:19,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:30:19,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:30:19,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:19,710 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:30:19,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:19,751 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:30:19,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19 WrapperNode [2020-09-21 11:30:19,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:19,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:30:19,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:30:19,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:30:19,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (1/1) ... [2020-09-21 11:30:19,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:30:19,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:30:19,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:30:19,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:30:19,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (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 [2020-09-21 11:30:19,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:30:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:30:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:30:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:30:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:30:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:30:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:30:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:30:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:30:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:30:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:30:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:30:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:30:20,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:30:20,336 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 11:30:20,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:20 BoogieIcfgContainer [2020-09-21 11:30:20,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:30:20,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:30:20,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:30:20,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:30:20,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:30:19" (1/3) ... [2020-09-21 11:30:20,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b2c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:20, skipping insertion in model container [2020-09-21 11:30:20,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:19" (2/3) ... [2020-09-21 11:30:20,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b2c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:20, skipping insertion in model container [2020-09-21 11:30:20,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:20" (3/3) ... [2020-09-21 11:30:20,371 INFO L109 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-09-21 11:30:20,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:30:20,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:30:20,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:30:20,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:30:20,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:30:20,450 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:30:20,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:30:20,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:30:20,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:30:20,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:30:20,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:30:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-21 11:30:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:30:20,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:20,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:20,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -978746934, now seen corresponding path program 1 times [2020-09-21 11:30:20,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:20,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485591366] [2020-09-21 11:30:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:20,676 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:20,676 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:20,677 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:30:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:30:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:30:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:30:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:30:20,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:20,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:20,802 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:20,802 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:30:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:20,819 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:20,819 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:20,820 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:20,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:20,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:30:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:20,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485591366] [2020-09-21 11:30:20,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:20,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:30:20,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35375525] [2020-09-21 11:30:20,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:30:20,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:20,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:30:20,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:30:20,864 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-09-21 11:30:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:21,071 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2020-09-21 11:30:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:30:21,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-21 11:30:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:21,084 INFO L225 Difference]: With dead ends: 67 [2020-09-21 11:30:21,084 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:30:21,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:30:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:30:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-09-21 11:30:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 11:30:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 11:30:21,139 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-09-21 11:30:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:21,140 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 11:30:21,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:30:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 11:30:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:30:21,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:21,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:21,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:30:21,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1791807978, now seen corresponding path program 1 times [2020-09-21 11:30:21,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811297121] [2020-09-21 11:30:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:21,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:30:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:30:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:30:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:30:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:30:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:21,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:21,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:21,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 11:30:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:21,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:30:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:21,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811297121] [2020-09-21 11:30:21,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:30:21,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:30:21,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451787729] [2020-09-21 11:30:21,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:30:21,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:21,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:30:21,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:30:21,281 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-09-21 11:30:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:21,424 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-09-21 11:30:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:30:21,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-21 11:30:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:21,426 INFO L225 Difference]: With dead ends: 58 [2020-09-21 11:30:21,427 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 11:30:21,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:30:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 11:30:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-21 11:30:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 11:30:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-21 11:30:21,437 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2020-09-21 11:30:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:21,438 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-21 11:30:21,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:30:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-21 11:30:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:30:21,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:21,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:21,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:30:21,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2002160904, now seen corresponding path program 2 times [2020-09-21 11:30:21,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:21,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526881779] [2020-09-21 11:30:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,535 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:30:21,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:30:21,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 11:30:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:30:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:30:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:30:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,604 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:21,605 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,605 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:21,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:21,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 11:30:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:21,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:21,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:21,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:21,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:21,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:30:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:30:21,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:30:21,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526881779] [2020-09-21 11:30:21,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:21,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:30:21,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925752071] [2020-09-21 11:30:21,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:30:21,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:30:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:30:21,635 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-09-21 11:30:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:21,784 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-21 11:30:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:30:21,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-21 11:30:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:21,788 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:30:21,789 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 11:30:21,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:30:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 11:30:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-21 11:30:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:30:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-21 11:30:21,808 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2020-09-21 11:30:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:21,808 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-21 11:30:21,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:30:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-21 11:30:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:30:21,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:21,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:21,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:30:21,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash -709829620, now seen corresponding path program 1 times [2020-09-21 11:30:21,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:21,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143729145] [2020-09-21 11:30:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:30:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -14 [2020-09-21 11:30:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in width: 14 [2020-09-21 11:30:21,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:21,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:30:21,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 11:30:21,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:30:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:30:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:30:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 11:30:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:22,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:22,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:22,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:22,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:22,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:30:22,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143729145] [2020-09-21 11:30:22,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:30:22,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:30:22,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609306884] [2020-09-21 11:30:22,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:30:22,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:22,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:30:22,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:30:22,184 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2020-09-21 11:30:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:22,530 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-21 11:30:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:30:22,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-21 11:30:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:22,533 INFO L225 Difference]: With dead ends: 63 [2020-09-21 11:30:22,533 INFO L226 Difference]: Without dead ends: 61 [2020-09-21 11:30:22,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:30:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-21 11:30:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2020-09-21 11:30:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-21 11:30:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-09-21 11:30:22,546 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 31 [2020-09-21 11:30:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:22,547 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-09-21 11:30:22,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:30:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-09-21 11:30:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:30:22,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:22,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:22,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:30:22,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash -8765042, now seen corresponding path program 1 times [2020-09-21 11:30:22,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:22,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021402967] [2020-09-21 11:30:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:30:22,582 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:30:22,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:30:22,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:30:22,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:30:22 BoogieIcfgContainer [2020-09-21 11:30:22,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:30:22,616 INFO L168 Benchmark]: Toolchain (without parser) took 3224.63 ms. Allocated memory was 137.9 MB in the beginning and 230.7 MB in the end (delta: 92.8 MB). Free memory was 101.0 MB in the beginning and 89.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:22,617 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:30:22,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:22,619 INFO L168 Benchmark]: Boogie Preprocessor took 144.71 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 177.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:22,620 INFO L168 Benchmark]: RCFGBuilder took 449.67 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:22,621 INFO L168 Benchmark]: TraceAbstraction took 2264.78 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 159.7 MB in the beginning and 89.1 MB in the end (delta: 70.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:22,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.71 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 177.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.67 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2264.78 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 159.7 MB in the beginning and 89.1 MB in the end (delta: 70.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int SIZE; [L12] const int MAX = 100000; [L16] SIZE = __VERIFIER_nondet_int() [L17] COND TRUE SIZE > 1 && SIZE < MAX [L19] int i; [L20] int *a = malloc(sizeof(int)*SIZE); [L22] i = 0 [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND FALSE !(i < SIZE) [L27] COND FALSE !(SIZE % 2 != 0) [L29] CALL assume_abort_if_not(SIZE % 2 == 0) [L4] COND FALSE !(!cond) [L29] RET assume_abort_if_not(SIZE % 2 == 0) [L30] i = 1 [L30] COND TRUE i <= SIZE/2 [L32] EXPR a[2*i-2] [L32] COND FALSE !(a[2*i-2] > i) [L36] EXPR a[2*i-1] [L36] COND TRUE a[2*i-1] > i [L38] a[2*i-1] = 2*i-1 [L30] i++ [L30] COND FALSE !(i <= SIZE/2) [L42] i = 0 [L42] COND TRUE i < SIZE [L44] EXPR a[i] [L44] CALL __VERIFIER_assert( a[i] <= i ) [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 100 SDslu, 124 SDs, 0 SdLazy, 410 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=4, 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, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 8814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/10 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 incorrect! Received shutdown request...