/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-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:17:57,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:17:57,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:17:57,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:17:57,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:17:57,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:17:57,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:17:57,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:17:57,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:17:57,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:17:57,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:17:57,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:17:57,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:17:57,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:17:57,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:17:57,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:17:57,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:17:57,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:17:57,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:17:57,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:17:57,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:17:57,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:17:57,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:17:57,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:17:57,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:17:57,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:17:57,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:17:57,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:17:57,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:17:57,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:17:57,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:17:57,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:17:57,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:17:57,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:17:57,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:17:57,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:17:57,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:17:57,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:17:57,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:17:57,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:17:57,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:17:57,528 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 02:17:57,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:17:57,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:17:57,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:17:57,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:17:57,583 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:17:57,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:17:57,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:17:57,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:17:57,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:17:57,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:17:57,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:17:57,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:17:57,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:17:57,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:17:57,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:17:57,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:17:57,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:17:57,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:17:57,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:17:57,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:17:57,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:17:57,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:17:57,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:17:57,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:17:57,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:17:57,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:17:57,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:17:57,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:17:57,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:17:57,590 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 02:17:58,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:17:58,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:17:58,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:17:58,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:17:58,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:17:58,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-25 02:17:58,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d253dc06/10cac6b25da14e718e6d3f9761eb064a/FLAG79d104090 [2020-09-25 02:17:58,736 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:17:58,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-25 02:17:58,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d253dc06/10cac6b25da14e718e6d3f9761eb064a/FLAG79d104090 [2020-09-25 02:17:59,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d253dc06/10cac6b25da14e718e6d3f9761eb064a [2020-09-25 02:17:59,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:17:59,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:17:59,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:59,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:17:59,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:17:59,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3330734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59, skipping insertion in model container [2020-09-25 02:17:59,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:17:59,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:17:59,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:59,401 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:17:59,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:59,450 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:17:59,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59 WrapperNode [2020-09-25 02:17:59,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:59,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:17:59,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:17:59,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:17:59,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (1/1) ... [2020-09-25 02:17:59,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:17:59,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:17:59,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:17:59,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:17:59,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (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 02:17:59,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:17:59,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:17:59,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:17:59,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:17:59,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:17:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:17:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:17:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:17:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:17:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:17:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:17:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:17:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:17:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:17:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:17:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:17:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:17:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:17:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:00,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:00,012 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:18:00,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:00 BoogieIcfgContainer [2020-09-25 02:18:00,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:00,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:00,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:00,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:00,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:17:59" (1/3) ... [2020-09-25 02:18:00,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6484ef51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:00, skipping insertion in model container [2020-09-25 02:18:00,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:59" (2/3) ... [2020-09-25 02:18:00,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6484ef51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:00, skipping insertion in model container [2020-09-25 02:18:00,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:00" (3/3) ... [2020-09-25 02:18:00,027 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-25 02:18:00,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:00,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:00,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:00,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:00,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:00,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:00,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:00,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:00,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:00,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:00,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-25 02:18:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:18:00,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:00,134 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] [2020-09-25 02:18:00,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-25 02:18:00,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:00,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631716700] [2020-09-25 02:18:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:18:00,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 02:18:00,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 02:18:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:18:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:18:00,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:00,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:00,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:00,937 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 02:18:00,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631716700] [2020-09-25 02:18:00,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:00,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:18:00,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036708308] [2020-09-25 02:18:00,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:18:00,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:00,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:18:00,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:00,972 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-25 02:18:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:01,211 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-25 02:18:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:01,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-25 02:18:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:01,230 INFO L225 Difference]: With dead ends: 101 [2020-09-25 02:18:01,230 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 02:18:01,236 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 02:18:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 02:18:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 02:18:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 02:18:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-25 02:18:01,304 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-25 02:18:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:01,306 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-25 02:18:01,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-25 02:18:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:18:01,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:01,310 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] [2020-09-25 02:18:01,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:01,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-25 02:18:01,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:01,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172252824] [2020-09-25 02:18:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:18:01,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 02:18:01,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:18:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:18:01,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:01,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:18:01,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:01,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:18:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,845 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 02:18:01,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172252824] [2020-09-25 02:18:01,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:01,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:01,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884733146] [2020-09-25 02:18:01,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:01,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:01,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:01,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:01,854 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-25 02:18:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:02,089 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-25 02:18:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:02,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 02:18:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:02,092 INFO L225 Difference]: With dead ends: 67 [2020-09-25 02:18:02,092 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 02:18:02,095 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 02:18:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 02:18:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-25 02:18:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 02:18:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-25 02:18:02,112 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-25 02:18:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:02,113 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-25 02:18:02,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-25 02:18:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:18:02,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:02,116 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] [2020-09-25 02:18:02,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:02,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:02,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-25 02:18:02,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:02,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539160155] [2020-09-25 02:18:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:18:04,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:18:04,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-09-25 02:18:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:18:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 02:18:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:18:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:18:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:04,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539160155] [2020-09-25 02:18:04,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:04,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:18:04,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680556949] [2020-09-25 02:18:04,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:18:04,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:04,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:18:04,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:18:04,516 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-25 02:18:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:04,876 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 02:18:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:18:04,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 02:18:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:04,878 INFO L225 Difference]: With dead ends: 64 [2020-09-25 02:18:04,878 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:18:04,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:18:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:18:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-25 02:18:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 02:18:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-25 02:18:04,889 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-25 02:18:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:04,889 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-25 02:18:04,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:18:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-25 02:18:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 02:18:04,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:04,891 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] [2020-09-25 02:18:04,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:04,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:04,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-25 02:18:04,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:04,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181056584] [2020-09-25 02:18:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 02:18:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:18:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 02:18:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:18:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 02:18:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:05,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:05,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:18:05,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:05,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181056584] [2020-09-25 02:18:05,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:05,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:18:05,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363014260] [2020-09-25 02:18:05,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:18:05,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:05,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:18:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:18:05,824 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-25 02:18:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:05,928 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 02:18:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:18:05,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 02:18:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:05,930 INFO L225 Difference]: With dead ends: 87 [2020-09-25 02:18:05,930 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:18:05,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:18:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:18:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 02:18:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:18:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 02:18:05,939 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-25 02:18:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:05,940 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 02:18:05,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:18:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 02:18:05,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:18:05,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:05,942 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 02:18:05,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:05,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-25 02:18:05,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:05,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801027084] [2020-09-25 02:18:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:05,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 02:18:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:18:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:18:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:18:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:18:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:11,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:11,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:18:11,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:11,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801027084] [2020-09-25 02:18:11,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:11,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:18:11,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458777315] [2020-09-25 02:18:11,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:18:11,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:18:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:18:11,081 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-25 02:18:11,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:11,412 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-25 02:18:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:18:11,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 02:18:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:11,414 INFO L225 Difference]: With dead ends: 93 [2020-09-25 02:18:11,414 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 02:18:11,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:18:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 02:18:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-25 02:18:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 02:18:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-25 02:18:11,423 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-25 02:18:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:11,424 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-25 02:18:11,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:18:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-25 02:18:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:18:11,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:11,425 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:11,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:18:11,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-25 02:18:11,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:11,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540843113] [2020-09-25 02:18:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:18:11,451 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:18:11,451 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:11,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:18:11,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:11 BoogieIcfgContainer [2020-09-25 02:18:11,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:11,485 INFO L168 Benchmark]: Toolchain (without parser) took 12397.94 ms. Allocated memory was 114.8 MB in the beginning and 269.5 MB in the end (delta: 154.7 MB). Free memory was 72.9 MB in the beginning and 175.3 MB in the end (delta: -102.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,486 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 114.8 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.15 ms. Allocated memory was 114.8 MB in the beginning and 130.0 MB in the end (delta: 15.2 MB). Free memory was 72.3 MB in the beginning and 98.9 MB in the end (delta: -26.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,488 INFO L168 Benchmark]: Boogie Preprocessor took 124.36 ms. Allocated memory was 130.0 MB in the beginning and 162.0 MB in the end (delta: 32.0 MB). Free memory was 98.9 MB in the beginning and 146.8 MB in the end (delta: -47.9 MB). Peak memory consumption was 471.2 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,489 INFO L168 Benchmark]: RCFGBuilder took 441.45 ms. Allocated memory is still 162.0 MB. Free memory was 146.8 MB in the beginning and 128.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,490 INFO L168 Benchmark]: TraceAbstraction took 11462.52 ms. Allocated memory was 162.0 MB in the beginning and 269.5 MB in the end (delta: 107.5 MB). Free memory was 127.8 MB in the beginning and 175.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:11,494 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 114.8 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.15 ms. Allocated memory was 114.8 MB in the beginning and 130.0 MB in the end (delta: 15.2 MB). Free memory was 72.3 MB in the beginning and 98.9 MB in the end (delta: -26.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.36 ms. Allocated memory was 130.0 MB in the beginning and 162.0 MB in the end (delta: 32.0 MB). Free memory was 98.9 MB in the beginning and 146.8 MB in the end (delta: -47.9 MB). Peak memory consumption was 471.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 441.45 ms. Allocated memory is still 162.0 MB. Free memory was 146.8 MB in the beginning and 128.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11462.52 ms. Allocated memory was 162.0 MB in the beginning and 269.5 MB in the end (delta: 107.5 MB). Free memory was 127.8 MB in the beginning and 175.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i