/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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-c90d42b [2020-09-25 02:17:55,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:17:55,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:17:55,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:17:55,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:17:55,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:17:55,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:17:55,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:17:55,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:17:55,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:17:55,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:17:55,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:17:55,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:17:55,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:17:55,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:17:55,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:17:55,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:17:55,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:17:55,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:17:55,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:17:55,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:17:55,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:17:55,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:17:55,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:17:55,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:17:55,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:17:55,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:17:55,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:17:55,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:17:55,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:17:55,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:17:55,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:17:55,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:17:55,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:17:55,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:17:55,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:17:55,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:17:55,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:17:55,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:17:55,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:17:55,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:17:55,300 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 [2020-09-25 02:17:55,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:17:55,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:17:55,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:17:55,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:17:55,344 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:17:55,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:17:55,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:17:55,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:17:55,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:17:55,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:17:55,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:17:55,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:17:55,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:17:55,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:17:55,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:17:55,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:17:55,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:17:55,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:17:55,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:17:55,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:17:55,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:17:55,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:17:55,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:17:55,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:17:55,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:17:55,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:17:55,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:17:55,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:17:55,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:17:55,350 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:17:55,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:17:55,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:17:55,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:17:55,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:17:55,960 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:17:55,962 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-25 02:17:56,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d994dcecc/b07457f4802240ddb75e824ec6fcbff3/FLAG2bb9e9e21 [2020-09-25 02:17:56,739 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:17:56,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-25 02:17:56,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d994dcecc/b07457f4802240ddb75e824ec6fcbff3/FLAG2bb9e9e21 [2020-09-25 02:17:57,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d994dcecc/b07457f4802240ddb75e824ec6fcbff3 [2020-09-25 02:17:57,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:17:57,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:17:57,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:57,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:17:57,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:17:57,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57, skipping insertion in model container [2020-09-25 02:17:57,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:17:57,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:17:57,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:57,340 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:17:57,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:57,381 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:17:57,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57 WrapperNode [2020-09-25 02:17:57,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:57,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:17:57,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:17:57,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:17:57,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (1/1) ... [2020-09-25 02:17:57,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:17:57,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:17:57,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:17:57,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:17:57,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (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 [2020-09-25 02:17:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:17:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:17:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:17:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:17:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:17:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:17:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:17:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:17:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:17:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:17:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:17:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:17:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:17:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:17:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:17:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:17:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:17:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:17:57,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:17:57,976 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:17:57,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:17:57 BoogieIcfgContainer [2020-09-25 02:17:57,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:17:57,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:17:57,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:17:57,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:17:57,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:17:57" (1/3) ... [2020-09-25 02:17:57,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473fb944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:17:57, skipping insertion in model container [2020-09-25 02:17:57,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:57" (2/3) ... [2020-09-25 02:17:57,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473fb944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:17:57, skipping insertion in model container [2020-09-25 02:17:57,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:17:57" (3/3) ... [2020-09-25 02:17:57,992 INFO L109 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-09-25 02:17:58,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:17:58,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:17:58,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:17:58,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:17:58,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:17:58,072 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:17:58,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:17:58,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:17:58,073 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:17:58,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:17:58,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:17:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-25 02:17:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:17:58,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:17:58,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:17:58,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:17:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:17:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1270765896, now seen corresponding path program 1 times [2020-09-25 02:17:58,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:17:58,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732806620] [2020-09-25 02:17:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:17:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 02:17:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:17:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-09-25 02:17:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:17:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:17:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:17:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:17:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:17:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:17:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:17:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:17:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 02:17:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:17:59,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:17:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:17:59,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:17:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:17:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:17:59,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732806620] [2020-09-25 02:17:59,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:17:59,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:17:59,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261669925] [2020-09-25 02:17:59,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:17:59,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:17:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:17:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:17:59,729 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-25 02:17:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:17:59,991 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-25 02:17:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:17:59,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-25 02:17:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:00,005 INFO L225 Difference]: With dead ends: 108 [2020-09-25 02:18:00,005 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 02:18:00,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 02:18:00,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 02:18:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 02:18:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-25 02:18:00,064 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 33 [2020-09-25 02:18:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:00,065 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-25 02:18:00,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-25 02:18:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:18:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:00,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:00,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:00,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:00,068 INFO L82 PathProgramCache]: Analyzing trace with hash 50142755, now seen corresponding path program 1 times [2020-09-25 02:18:00,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:00,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925773447] [2020-09-25 02:18:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 02:18:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:18:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 02:18:01,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:18:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:18:01,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:18:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 02:18:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:01,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:18:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:18:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:01,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925773447] [2020-09-25 02:18:01,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:01,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:01,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201153246] [2020-09-25 02:18:01,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:01,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:01,214 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-09-25 02:18:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:01,551 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-09-25 02:18:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:01,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 02:18:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:01,556 INFO L225 Difference]: With dead ends: 106 [2020-09-25 02:18:01,556 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 02:18:01,558 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 [2020-09-25 02:18:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 02:18:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-09-25 02:18:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:18:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 02:18:01,576 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2020-09-25 02:18:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:01,577 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 02:18:01,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 02:18:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 02:18:01,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:01,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:01,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:01,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1001580845, now seen corresponding path program 1 times [2020-09-25 02:18:01,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:01,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245054756] [2020-09-25 02:18:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:18:03,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:18:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2225 [2020-09-25 02:18:03,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:18:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 02:18:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:18:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:18:03,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:18:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 02:18:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:03,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:18:03,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:18:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:18:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:04,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245054756] [2020-09-25 02:18:04,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:04,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:18:04,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144094502] [2020-09-25 02:18:04,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:18:04,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:18:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:18:04,005 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 9 states. [2020-09-25 02:18:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:04,630 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-09-25 02:18:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:18:04,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 02:18:04,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:04,633 INFO L225 Difference]: With dead ends: 99 [2020-09-25 02:18:04,634 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 02:18:04,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:18:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 02:18:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-09-25 02:18:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 02:18:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-25 02:18:04,655 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2020-09-25 02:18:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:04,661 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-25 02:18:04,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:18:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-25 02:18:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 02:18:04,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:04,665 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, 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] [2020-09-25 02:18:04,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:04,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1492535423, now seen corresponding path program 1 times [2020-09-25 02:18:04,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:04,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309009949] [2020-09-25 02:18:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:18:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:18:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-09-25 02:18:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:18:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:18:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:18:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:07,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:18:07,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:18:07,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 02:18:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:07,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:07,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:18:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309009949] [2020-09-25 02:18:07,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:07,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:18:07,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753943464] [2020-09-25 02:18:07,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:18:07,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:07,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:18:07,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:18:07,841 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 8 states. [2020-09-25 02:18:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:08,182 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-09-25 02:18:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:18:08,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 02:18:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:08,184 INFO L225 Difference]: With dead ends: 115 [2020-09-25 02:18:08,184 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 02:18:08,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:18:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 02:18:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-09-25 02:18:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 02:18:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-25 02:18:08,194 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 50 [2020-09-25 02:18:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:08,194 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-25 02:18:08,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:18:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-25 02:18:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:18:08,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:08,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:08,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:08,197 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:08,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:08,197 INFO L82 PathProgramCache]: Analyzing trace with hash -153041457, now seen corresponding path program 2 times [2020-09-25 02:18:08,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:08,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093837211] [2020-09-25 02:18:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:18:08,222 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:18:08,222 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:08,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:18:08,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:08 BoogieIcfgContainer [2020-09-25 02:18:08,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:08,252 INFO L168 Benchmark]: Toolchain (without parser) took 11194.30 ms. Allocated memory was 140.5 MB in the beginning and 298.3 MB in the end (delta: 157.8 MB). Free memory was 102.4 MB in the beginning and 121.2 MB in the end (delta: -18.8 MB). Peak memory consumption was 139.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,253 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:18:08,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,255 INFO L168 Benchmark]: Boogie Preprocessor took 141.04 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 181.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,256 INFO L168 Benchmark]: RCFGBuilder took 457.71 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 161.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,256 INFO L168 Benchmark]: TraceAbstraction took 10265.23 ms. Allocated memory was 203.9 MB in the beginning and 298.3 MB in the end (delta: 94.4 MB). Free memory was 161.4 MB in the beginning and 121.2 MB in the end (delta: 40.2 MB). Peak memory consumption was 134.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,260 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.04 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 181.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.71 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 161.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10265.23 ms. Allocated memory was 203.9 MB in the beginning and 298.3 MB in the end (delta: 94.4 MB). Free memory was 161.4 MB in the beginning and 121.2 MB in the end (delta: 40.2 MB). Peak memory consumption was 134.6 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 FALSE !(a[2*i-1] > i) [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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 219 SDslu, 286 SDs, 0 SdLazy, 572 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 12996 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 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...