/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:46:36,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:46:36,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:46:36,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:46:36,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:46:36,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:46:36,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:46:36,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:46:36,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:46:36,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:46:36,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:46:36,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:46:36,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:46:36,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:46:36,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:46:36,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:46:36,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:46:36,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:46:36,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:46:36,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:46:36,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:46:36,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:46:36,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:46:36,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:46:36,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:46:36,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:46:36,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:46:36,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:46:36,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:46:36,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:46:36,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:46:36,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:46:36,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:46:36,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:46:36,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:46:36,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:46:36,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:46:36,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:46:36,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:46:36,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:46:36,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:46:36,571 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 14:46:36,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:46:36,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:46:36,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:46:36,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:46:36,628 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:46:36,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:46:36,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:46:36,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:46:36,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:46:36,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:46:36,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:46:36,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:46:36,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:46:36,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:46:36,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:46:36,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:46:36,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:46:36,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:46:36,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:46:36,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:46:36,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:46:36,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:46:36,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:46:36,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:46:36,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:46:36,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:46:36,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:46:36,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:46:36,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:46:36,634 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:46:37,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:46:37,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:46:37,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:46:37,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:46:37,184 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:46:37,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-09-25 14:46:37,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d9a0feb2/4f710fde060d4e8cbb8f0482f60f2d46/FLAGbc2d01336 [2020-09-25 14:46:37,780 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:46:37,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-09-25 14:46:37,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d9a0feb2/4f710fde060d4e8cbb8f0482f60f2d46/FLAGbc2d01336 [2020-09-25 14:46:38,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d9a0feb2/4f710fde060d4e8cbb8f0482f60f2d46 [2020-09-25 14:46:38,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:46:38,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:46:38,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:38,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:46:38,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:46:38,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5273b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38, skipping insertion in model container [2020-09-25 14:46:38,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:46:38,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:46:38,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:38,447 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:46:38,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:38,494 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:46:38,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38 WrapperNode [2020-09-25 14:46:38,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:38,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:46:38,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:46:38,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:46:38,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (1/1) ... [2020-09-25 14:46:38,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:46:38,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:46:38,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:46:38,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:46:38,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (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 14:46:38,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:46:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:46:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:46:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:46:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:46:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:46:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:46:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:46:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:46:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:46:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:46:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:46:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:46:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:46:38,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:46:38,997 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:46:39,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:39 BoogieIcfgContainer [2020-09-25 14:46:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:46:39,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:46:39,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:46:39,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:46:39,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:46:38" (1/3) ... [2020-09-25 14:46:39,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c080450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:39, skipping insertion in model container [2020-09-25 14:46:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:38" (2/3) ... [2020-09-25 14:46:39,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c080450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:39, skipping insertion in model container [2020-09-25 14:46:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:39" (3/3) ... [2020-09-25 14:46:39,012 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-09-25 14:46:39,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:46:39,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:46:39,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:46:39,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:46:39,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:46:39,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:46:39,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:46:39,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:46:39,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:46:39,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:46:39,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:46:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 14:46:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 14:46:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:39,129 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] [2020-09-25 14:46:39,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-25 14:46:39,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:39,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834705380] [2020-09-25 14:46:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:39,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:39,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:46:39,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 14:46:39,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:39,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:46:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:46:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:46:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:46:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:39,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:46:39,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:39,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:39,902 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 14:46:39,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834705380] [2020-09-25 14:46:39,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:46:39,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:46:39,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298616907] [2020-09-25 14:46:39,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:46:39,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:46:39,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:46:39,938 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-25 14:46:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:40,154 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-25 14:46:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:46:40,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 14:46:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:40,167 INFO L225 Difference]: With dead ends: 75 [2020-09-25 14:46:40,167 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 14:46:40,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:46:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 14:46:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-25 14:46:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 14:46:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-25 14:46:40,223 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-25 14:46:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:40,224 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-25 14:46:40,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:46:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-25 14:46:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:46:40,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:40,226 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] [2020-09-25 14:46:40,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:46:40,227 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:40,228 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-25 14:46:40,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:40,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517350854] [2020-09-25 14:46:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:46:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-25 14:46:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:41,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:46:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:46:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:46:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:46:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:41,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:41,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517350854] [2020-09-25 14:46:41,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:41,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:46:41,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534221264] [2020-09-25 14:46:41,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:46:41,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:46:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:46:41,296 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2020-09-25 14:46:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:41,567 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-09-25 14:46:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:46:41,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 14:46:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:41,570 INFO L225 Difference]: With dead ends: 61 [2020-09-25 14:46:41,570 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 14:46:41,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:46:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 14:46:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-09-25 14:46:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 14:46:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 14:46:41,581 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 32 [2020-09-25 14:46:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:41,582 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 14:46:41,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:46:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 14:46:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:46:41,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:41,584 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] [2020-09-25 14:46:41,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:46:41,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:41,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:41,585 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-25 14:46:41,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:41,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943948570] [2020-09-25 14:46:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:42,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:46:42,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-25 14:46:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:42,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:46:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:46:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:46:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:42,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:42,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:42,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:46:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:42,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:42,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943948570] [2020-09-25 14:46:42,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:42,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:46:42,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600846547] [2020-09-25 14:46:42,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:46:42,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:46:42,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:46:42,513 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 9 states. [2020-09-25 14:46:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:42,765 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-09-25 14:46:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:46:42,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 14:46:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:42,767 INFO L225 Difference]: With dead ends: 63 [2020-09-25 14:46:42,767 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 14:46:42,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:46:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 14:46:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 14:46:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 14:46:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-25 14:46:42,776 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2020-09-25 14:46:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:42,777 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-25 14:46:42,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:46:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-25 14:46:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 14:46:42,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:42,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-25 14:46:42,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:46:42,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:42,780 INFO L82 PathProgramCache]: Analyzing trace with hash -884839407, now seen corresponding path program 2 times [2020-09-25 14:46:42,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:42,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485475141] [2020-09-25 14:46:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:42,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:46:46,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:46:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3295 [2020-09-25 14:46:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:46,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:46:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:46:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:46:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:46,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:46:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:46,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:46,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485475141] [2020-09-25 14:46:46,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:46,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:46:46,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454402565] [2020-09-25 14:46:46,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:46:46,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:46,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:46:46,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:46:46,288 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 7 states. [2020-09-25 14:46:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:46,521 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-09-25 14:46:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:46:46,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-09-25 14:46:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:46,524 INFO L225 Difference]: With dead ends: 51 [2020-09-25 14:46:46,524 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:46:46,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:46:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:46:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:46:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:46:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:46:46,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-25 14:46:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:46,528 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:46:46,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:46:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:46:46,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:46:46,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:46:46,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:46:46,784 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-09-25 14:46:46,833 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,833 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,834 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,834 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 14:46:46,834 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,835 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,835 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:46:46,835 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:46:46,835 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:46:46,835 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-09-25 14:46:46,836 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 14:46:46,836 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 14:46:46,836 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 14:46:46,836 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 14:46:46,836 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 14:46:46,837 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 14:46:46,837 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2020-09-25 14:46:46,837 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 14:46:46,837 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 14:46:46,838 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 14:46:46,838 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 14:46:46,838 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 14:46:46,839 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 24) the Hoare annotation is: (let ((.cse0 (<= main_~SIZE~0 1)) (.cse1 (div main_~j~0 4294967296))) (or (and (<= (+ main_~j~0 1) main_~SIZE~0) .cse0 (< 0 (+ .cse1 1))) (and (<= main_~SIZE~0 main_~j~0) .cse0 (let ((.cse2 (<= 1 main_~SIZE~0)) (.cse3 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and .cse2 (= main_~menor~0 .cse3)) (and .cse2 (<= (+ main_~menor~0 1) .cse3)))) (< .cse1 (+ (div main_~SIZE~0 4294967296) 1))))) [2020-09-25 14:46:46,839 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 14:46:46,839 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-09-25 14:46:46,839 INFO L268 CegarLoopResult]: For program point L19-7(lines 19 24) no Hoare annotation was computed. [2020-09-25 14:46:46,840 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 14:46:46,840 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 14:46:46,840 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 14:46:46,840 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (<= 1 main_~SIZE~0)) (.cse2 (<= main_~SIZE~0 1)) (.cse1 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and .cse0 (= main_~menor~0 .cse1) .cse2 (= main_~menor~0 |main_#t~mem5|)) (and .cse0 (<= main_~menor~0 |main_#t~mem5|) .cse2 (<= (+ main_~menor~0 1) .cse1)))) [2020-09-25 14:46:46,841 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 14:46:46,841 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 14:46:46,841 INFO L268 CegarLoopResult]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2020-09-25 14:46:46,841 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 14:46:46,842 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 14:46:46,842 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 14:46:46,842 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 14:46:46,843 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 14:46:46,843 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 14:46:46,843 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 14:46:46,843 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 14:46:46,843 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 14:46:46,844 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 14:46:46,844 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 14:46:46,844 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 14:46:46,844 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 14:46:46,863 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,864 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,873 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,873 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:46:46 BoogieIcfgContainer [2020-09-25 14:46:46,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:46:46,897 INFO L168 Benchmark]: Toolchain (without parser) took 8729.75 ms. Allocated memory was 145.2 MB in the beginning and 288.4 MB in the end (delta: 143.1 MB). Free memory was 100.8 MB in the beginning and 144.2 MB in the end (delta: -43.3 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:46,900 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:46:46,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.71 ms. Allocated memory is still 145.2 MB. Free memory was 100.2 MB in the beginning and 90.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:46,905 INFO L168 Benchmark]: Boogie Preprocessor took 124.53 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 90.3 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:46,906 INFO L168 Benchmark]: RCFGBuilder took 381.87 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 162.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:46,907 INFO L168 Benchmark]: TraceAbstraction took 7886.02 ms. Allocated memory was 200.3 MB in the beginning and 288.4 MB in the end (delta: 88.1 MB). Free memory was 161.9 MB in the beginning and 144.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:46,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.71 ms. Allocated memory is still 145.2 MB. Free memory was 100.2 MB in the beginning and 90.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.53 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 90.3 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.87 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 162.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7886.02 ms. Allocated memory was 200.3 MB in the beginning and 288.4 MB in the end (delta: 88.1 MB). Free memory was 161.9 MB in the beginning and 144.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-09-25 14:46:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,935 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 14:46:46,935 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((j + 1 <= SIZE && SIZE <= 1) && 0 < j / 4294967296 + 1) || (((SIZE <= j && SIZE <= 1) && ((1 <= SIZE && menor == unknown-#memory_int-unknown[array][array]) || (1 <= SIZE && menor + 1 <= unknown-#memory_int-unknown[array][array]))) && j / 4294967296 < SIZE / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 123 SDslu, 381 SDs, 0 SdLazy, 410 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, 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, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 111 HoareAnnotationTreeSize, 10 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 21796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...