/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:36:57,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:36:57,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:36:57,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:36:57,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:36:57,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:36:57,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:36:57,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:36:57,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:36:57,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:36:57,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:36:57,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:36:57,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:36:57,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:36:57,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:36:57,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:36:57,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:36:57,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:36:57,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:36:57,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:36:57,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:36:57,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:36:57,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:36:57,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:36:57,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:36:57,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:36:57,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:36:57,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:36:57,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:36:57,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:36:57,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:36:57,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:36:57,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:36:57,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:36:57,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:36:57,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:36:57,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:36:57,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:36:57,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:36:57,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:36:57,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:36:57,622 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 [2020-10-26 19:36:57,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:36:57,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:36:57,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:36:57,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:36:57,669 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:36:57,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:36:57,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:36:57,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:36:57,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:36:57,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:36:57,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:36:57,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:36:57,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:36:57,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:36:57,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:36:57,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:36:57,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:36:57,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:36:57,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:36:57,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:36:57,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:36:57,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:36:57,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:36:57,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:36:57,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:36:57,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:36:57,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:36:57,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:36:57,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:36:57,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:36:58,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:36:58,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:36:58,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:36:58,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:36:58,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:36:58,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-26 19:36:58,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd64186/a302ba8d8b0a4399b5f6819b1f7d7c25/FLAG7d3aae8dd [2020-10-26 19:36:58,991 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:36:58,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-26 19:36:59,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd64186/a302ba8d8b0a4399b5f6819b1f7d7c25/FLAG7d3aae8dd [2020-10-26 19:36:59,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd64186/a302ba8d8b0a4399b5f6819b1f7d7c25 [2020-10-26 19:36:59,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:36:59,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:36:59,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:36:59,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:36:59,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:36:59,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd17af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59, skipping insertion in model container [2020-10-26 19:36:59,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:36:59,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:36:59,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:36:59,591 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:36:59,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:36:59,661 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:36:59,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59 WrapperNode [2020-10-26 19:36:59,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:36:59,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:36:59,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:36:59,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:36:59,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (1/1) ... [2020-10-26 19:36:59,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:36:59,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:36:59,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:36:59,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:36:59,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (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 [2020-10-26 19:36:59,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:36:59,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:36:59,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:36:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:36:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:36:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:36:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:36:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:36:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:36:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:36:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:36:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:36:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:36:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:36:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:36:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:36:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:37:00,362 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:37:00,363 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:37:00,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:00 BoogieIcfgContainer [2020-10-26 19:37:00,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:37:00,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:37:00,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:37:00,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:37:00,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:36:59" (1/3) ... [2020-10-26 19:37:00,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23876364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:00, skipping insertion in model container [2020-10-26 19:37:00,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:59" (2/3) ... [2020-10-26 19:37:00,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23876364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:00, skipping insertion in model container [2020-10-26 19:37:00,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:00" (3/3) ... [2020-10-26 19:37:00,380 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-10-26 19:37:00,396 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:37:00,403 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:37:00,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:37:00,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:37:00,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:37:00,465 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:37:00,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:37:00,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:37:00,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:37:00,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:37:00,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:37:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-26 19:37:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 19:37:00,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:37:00,501 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] [2020-10-26 19:37:00,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:37:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:37:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-26 19:37:00,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:37:00,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980791682] [2020-10-26 19:37:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:37:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:00,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:00,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 19:37:00,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:37:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 19:37:00,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:37:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 19:37:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:37:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:37:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:37:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:01,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:37:01,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 19:37:01,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:01,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:37:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:37:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:37:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:37:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:37:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:01,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:37:01,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:37:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 19:37:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:37:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:37:01,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980791682] [2020-10-26 19:37:01,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:37:01,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:37:01,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905664943] [2020-10-26 19:37:01,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:37:01,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:37:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:37:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:37:01,146 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-26 19:37:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:37:01,266 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-26 19:37:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:37:01,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-26 19:37:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:37:01,277 INFO L225 Difference]: With dead ends: 61 [2020-10-26 19:37:01,277 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 19:37:01,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:37:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 19:37:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 19:37:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 19:37:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-26 19:37:01,328 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-26 19:37:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:37:01,329 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-26 19:37:01,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:37:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-26 19:37:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 19:37:01,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:37:01,330 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] [2020-10-26 19:37:01,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:37:01,331 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:37:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:37:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-26 19:37:01,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:37:01,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713348603] [2020-10-26 19:37:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:37:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:01,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 19:37:01,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:37:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-26 19:37:01,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:37:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:37:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 19:37:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:01,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:37:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:37:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:37:01,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:37:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:37:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:37:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:37:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:37:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:37:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:37:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:37:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:37:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:37:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:37:01,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713348603] [2020-10-26 19:37:01,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:37:01,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:37:01,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486131793] [2020-10-26 19:37:01,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:37:01,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:37:01,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:37:01,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:37:01,858 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-26 19:37:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:37:02,026 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-26 19:37:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:37:02,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-26 19:37:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:37:02,028 INFO L225 Difference]: With dead ends: 40 [2020-10-26 19:37:02,028 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 19:37:02,029 INFO L677 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 [2020-10-26 19:37:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 19:37:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 19:37:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 19:37:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-26 19:37:02,040 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-26 19:37:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:37:02,040 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-26 19:37:02,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:37:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-26 19:37:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 19:37:02,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:37:02,042 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] [2020-10-26 19:37:02,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:37:02,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:37:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:37:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-26 19:37:02,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:37:02,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311048622] [2020-10-26 19:37:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:37:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:03,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:03,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 19:37:03,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:37:03,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-26 19:37:03,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:37:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:37:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 19:37:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:37:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:37:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:03,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:37:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:37:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:03,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:37:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:03,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:37:03,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:37:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:37:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:37:03,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:37:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:37:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:37:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:37:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:37:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:37:03,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311048622] [2020-10-26 19:37:03,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:37:03,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:37:03,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120192400] [2020-10-26 19:37:03,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:37:03,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:37:03,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:37:03,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:37:03,410 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-26 19:37:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:37:03,789 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-26 19:37:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:37:03,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-26 19:37:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:37:03,792 INFO L225 Difference]: With dead ends: 69 [2020-10-26 19:37:03,792 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 19:37:03,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:37:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 19:37:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-26 19:37:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 19:37:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-26 19:37:03,805 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28 [2020-10-26 19:37:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:37:03,805 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-26 19:37:03,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:37:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-26 19:37:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 19:37:03,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:37:03,807 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] [2020-10-26 19:37:03,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:37:03,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:37:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:37:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-26 19:37:03,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:37:03,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77064177] [2020-10-26 19:37:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:37:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 19:37:03,828 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 19:37:03,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:37:03,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:37:03,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:37:03 BoogieIcfgContainer [2020-10-26 19:37:03,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:37:03,855 INFO L168 Benchmark]: Toolchain (without parser) took 4514.06 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 141.6 MB in the beginning and 171.0 MB in the end (delta: -29.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:03,855 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:37:03,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.91 ms. Allocated memory is still 165.7 MB. Free memory was 141.1 MB in the beginning and 131.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:03,857 INFO L168 Benchmark]: Boogie Preprocessor took 44.87 ms. Allocated memory is still 165.7 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:03,858 INFO L168 Benchmark]: RCFGBuilder took 657.02 ms. Allocated memory is still 165.7 MB. Free memory was 129.6 MB in the beginning and 113.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:03,859 INFO L168 Benchmark]: TraceAbstraction took 3482.58 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 113.1 MB in the beginning and 171.0 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:37:03,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.91 ms. Allocated memory is still 165.7 MB. Free memory was 141.1 MB in the beginning and 131.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.87 ms. Allocated memory is still 165.7 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 657.02 ms. Allocated memory is still 165.7 MB. Free memory was 129.6 MB in the beginning and 113.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3482.58 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 113.1 MB in the beginning and 171.0 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i