/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/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:17:58,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:17:58,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:17:58,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:17:58,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:17:58,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:17:58,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:17:58,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:17:58,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:17:58,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:17:58,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:17:58,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:17:58,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:17:58,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:17:58,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:17:58,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:17:58,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:17:58,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:17:58,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:17:58,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:17:58,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:17:58,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:17:58,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:17:58,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:17:58,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:17:58,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:17:58,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:17:58,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:17:58,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:17:58,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:17:58,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:17:58,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:17:58,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:17:58,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:17:58,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:17:58,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:17:58,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:17:58,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:17:58,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:17:58,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:17:58,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:17:58,501 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 02:17:58,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:17:58,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:17:58,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:17:58,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:17:58,561 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:17:58,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:17:58,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:17:58,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:17:58,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:17:58,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:17:58,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:17:58,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:17:58,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:17:58,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:17:58,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:17:58,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:17:58,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:17:58,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:17:58,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:17:58,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:17:58,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:17:58,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:17:58,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:17:58,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:17:58,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:17:58,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:17:58,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:17:58,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:17:58,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:17:58,572 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 02:17:59,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:17:59,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:17:59,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:17:59,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:17:59,093 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:17:59,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-09-25 02:17:59,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5dad5016/e0ad8a3c0d9242ecb8488ea1cce30209/FLAG7cbc2c6a1 [2020-09-25 02:17:59,760 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:17:59,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-09-25 02:17:59,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5dad5016/e0ad8a3c0d9242ecb8488ea1cce30209/FLAG7cbc2c6a1 [2020-09-25 02:18:00,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5dad5016/e0ad8a3c0d9242ecb8488ea1cce30209 [2020-09-25 02:18:00,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:00,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:00,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:00,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:00,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:00,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00, skipping insertion in model container [2020-09-25 02:18:00,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:00,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:00,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:00,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:00,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:00,546 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:00,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00 WrapperNode [2020-09-25 02:18:00,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:00,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:00,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:00,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:00,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (1/1) ... [2020-09-25 02:18:00,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:00,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:00,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:00,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:00,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (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 02:18:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:00,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:00,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:01,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:01,013 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:18:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:01 BoogieIcfgContainer [2020-09-25 02:18:01,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:01,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:01,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:01,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:01,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:00" (1/3) ... [2020-09-25 02:18:01,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d100ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:01, skipping insertion in model container [2020-09-25 02:18:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:00" (2/3) ... [2020-09-25 02:18:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d100ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:01, skipping insertion in model container [2020-09-25 02:18:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:01" (3/3) ... [2020-09-25 02:18:01,038 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-09-25 02:18:01,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:01,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:01,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:01,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:01,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:01,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:01,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:01,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:01,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:01,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:01,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-25 02:18:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:18:01,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:01,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:01,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-09-25 02:18:01,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:01,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22144132] [2020-09-25 02:18:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 02:18:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:18:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 02:18:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 02:18:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:18:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:01,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:18:01,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:01,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:01,821 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 02:18:01,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22144132] [2020-09-25 02:18:01,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:01,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:18:01,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623580871] [2020-09-25 02:18:01,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:18:01,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:01,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:18:01,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:01,855 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 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 125 states and 142 transitions. [2020-09-25 02:18:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:02,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-25 02:18:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:02,104 INFO L225 Difference]: With dead ends: 125 [2020-09-25 02:18:02,104 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 02:18:02,109 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 02:18:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 02:18:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 02:18:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 02:18:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 02:18:02,170 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-25 02:18:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:02,171 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 02:18:02,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 02:18:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:18:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:02,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:02,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:02,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-09-25 02:18:02,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:02,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760001104] [2020-09-25 02:18:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 02:18:02,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:18:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 02:18:02,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:18:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:18:02,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:02,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:02,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:18:02,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:02,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:02,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:18:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:02,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:02,976 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 02:18:02,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760001104] [2020-09-25 02:18:02,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:02,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:02,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854138797] [2020-09-25 02:18:02,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:02,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:02,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:02,981 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-09-25 02:18:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:03,181 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-25 02:18:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:03,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 02:18:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:03,184 INFO L225 Difference]: With dead ends: 93 [2020-09-25 02:18:03,184 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 02:18:03,185 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 02:18:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 02:18:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 02:18:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 02:18:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-25 02:18:03,198 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-09-25 02:18:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:03,198 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-25 02:18:03,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-25 02:18:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:18:03,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:03,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:03,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:03,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:03,202 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-09-25 02:18:03,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:03,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211650287] [2020-09-25 02:18:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 02:18:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:18:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:08,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:08,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:08,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:08,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:08,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:08,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211650287] [2020-09-25 02:18:08,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:08,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:18:08,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688832534] [2020-09-25 02:18:08,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:18:08,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:18:08,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:18:08,394 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 7 states. [2020-09-25 02:18:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:08,792 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-09-25 02:18:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:18:08,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-25 02:18:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:08,795 INFO L225 Difference]: With dead ends: 111 [2020-09-25 02:18:08,795 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 02:18:08,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:18:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 02:18:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2020-09-25 02:18:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 02:18:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-09-25 02:18:08,807 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 57 [2020-09-25 02:18:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:08,808 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-09-25 02:18:08,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:18:08,808 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-09-25 02:18:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:18:08,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:08,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:08,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:08,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1569346213, now seen corresponding path program 1 times [2020-09-25 02:18:08,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:08,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589620649] [2020-09-25 02:18:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:18:08,843 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:18:08,843 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:08,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:08,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:08 BoogieIcfgContainer [2020-09-25 02:18:08,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:08,885 INFO L168 Benchmark]: Toolchain (without parser) took 8781.63 ms. Allocated memory was 137.4 MB in the beginning and 293.1 MB in the end (delta: 155.7 MB). Free memory was 99.6 MB in the beginning and 117.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,886 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.24 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 179.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,888 INFO L168 Benchmark]: Boogie Preprocessor took 59.11 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,889 INFO L168 Benchmark]: RCFGBuilder took 412.59 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 156.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,891 INFO L168 Benchmark]: TraceAbstraction took 7858.62 ms. Allocated memory was 200.3 MB in the beginning and 293.1 MB in the end (delta: 92.8 MB). Free memory was 156.0 MB in the beginning and 117.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 131.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:08,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.24 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 179.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.11 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.59 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 156.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7858.62 ms. Allocated memory was 200.3 MB in the beginning and 293.1 MB in the end (delta: 92.8 MB). Free memory was 156.0 MB in the beginning and 117.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 131.7 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i