/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=SMALLEST --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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:21,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:21,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:21,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:21,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:21,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:21,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:21,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:21,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:21,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:21,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:21,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:21,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:21,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:21,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:21,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:21,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:21,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:21,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:21,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:21,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:21,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:21,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:21,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:21,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:21,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:21,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:21,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:21,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:21,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:21,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:21,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:21,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:21,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:21,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:21,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:21,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:21,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:21,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:21,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:21,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:21,896 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 [2020-09-24 18:28:21,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:21,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:21,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:21,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:21,932 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:21,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:21,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:21,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:21,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:21,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:21,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:21,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:21,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:21,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:21,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:21,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:21,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:21,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:21,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:21,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:21,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:21,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:21,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:21,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:21,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:21,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:21,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:21,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:21,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:21,937 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:28:22,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:22,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:22,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:22,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:22,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:22,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-09-24 18:28:22,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c37482d2/7f28b6dcea234f82921c4c51f2e3d4b6/FLAG8cc3409af [2020-09-24 18:28:23,172 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:23,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-09-24 18:28:23,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c37482d2/7f28b6dcea234f82921c4c51f2e3d4b6/FLAG8cc3409af [2020-09-24 18:28:23,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c37482d2/7f28b6dcea234f82921c4c51f2e3d4b6 [2020-09-24 18:28:23,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:23,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:23,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:23,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:23,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:23,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:23,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f127883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23, skipping insertion in model container [2020-09-24 18:28:23,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:23,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:23,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:23,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:23,829 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:23,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:23,879 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:23,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23 WrapperNode [2020-09-24 18:28:23,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:23,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:23,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:23,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:23,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:23,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:23,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:23,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:24,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:24,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:24,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (1/1) ... [2020-09-24 18:28:24,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:24,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:24,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:24,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:24,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (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 [2020-09-24 18:28:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:28:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:28:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:28:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:28:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:28:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:28:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:24,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:24,507 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 18:28:24,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:24 BoogieIcfgContainer [2020-09-24 18:28:24,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:24,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:24,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:24,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:24,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:23" (1/3) ... [2020-09-24 18:28:24,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a813e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:24, skipping insertion in model container [2020-09-24 18:28:24,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:23" (2/3) ... [2020-09-24 18:28:24,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a813e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:24, skipping insertion in model container [2020-09-24 18:28:24,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:24" (3/3) ... [2020-09-24 18:28:24,533 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-09-24 18:28:24,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:24,556 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:24,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:24,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:24,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:24,615 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:24,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:24,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:24,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:24,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:24,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 18:28:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:28:24,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:24,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:24,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:24,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1924334027, now seen corresponding path program 1 times [2020-09-24 18:28:24,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:24,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708044928] [2020-09-24 18:28:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:24,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:28:25,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-09-24 18:28:25,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:28:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:25,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:28:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:25,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:25,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708044928] [2020-09-24 18:28:25,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:25,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:25,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009862392] [2020-09-24 18:28:25,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:25,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:25,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:25,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:25,922 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-09-24 18:28:26,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:26,165 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2020-09-24 18:28:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:26,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-24 18:28:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:26,179 INFO L225 Difference]: With dead ends: 135 [2020-09-24 18:28:26,180 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 18:28:26,185 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 [2020-09-24 18:28:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 18:28:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-24 18:28:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 18:28:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-24 18:28:26,239 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 35 [2020-09-24 18:28:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:26,240 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-24 18:28:26,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-24 18:28:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:28:26,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:26,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:26,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:26,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -977702175, now seen corresponding path program 1 times [2020-09-24 18:28:26,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:26,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815312921] [2020-09-24 18:28:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:28:27,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:28:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-09-24 18:28:27,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:28:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:28:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:28:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:27,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815312921] [2020-09-24 18:28:27,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:27,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:27,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305320540] [2020-09-24 18:28:27,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:27,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:27,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:27,248 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-09-24 18:28:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:27,515 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-09-24 18:28:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:27,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 18:28:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:27,517 INFO L225 Difference]: With dead ends: 110 [2020-09-24 18:28:27,517 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 18:28:27,519 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 [2020-09-24 18:28:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 18:28:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 18:28:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:28:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 18:28:27,531 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 35 [2020-09-24 18:28:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:27,531 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 18:28:27,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 18:28:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 18:28:27,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:27,534 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, 1, 1] [2020-09-24 18:28:27,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:27,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash -269448694, now seen corresponding path program 1 times [2020-09-24 18:28:27,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:27,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925618902] [2020-09-24 18:28:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:32,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 18:28:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:28:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:28:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:28:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:28:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:28:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:33,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:33,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925618902] [2020-09-24 18:28:33,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:33,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:28:33,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120770532] [2020-09-24 18:28:33,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:28:33,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:33,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:28:33,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:28:33,281 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 14 states. [2020-09-24 18:28:34,011 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-09-24 18:28:34,156 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-09-24 18:28:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:34,472 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2020-09-24 18:28:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 18:28:34,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-09-24 18:28:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:34,474 INFO L225 Difference]: With dead ends: 125 [2020-09-24 18:28:34,474 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 18:28:34,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:28:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 18:28:34,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2020-09-24 18:28:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 18:28:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-09-24 18:28:34,488 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 59 [2020-09-24 18:28:34,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:34,489 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-09-24 18:28:34,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:28:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-09-24 18:28:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 18:28:34,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:34,491 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, 1, 1] [2020-09-24 18:28:34,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:28:34,492 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1693383620, now seen corresponding path program 1 times [2020-09-24 18:28:34,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:34,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366555454] [2020-09-24 18:28:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:28:34,515 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:28:34,516 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:28:34,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:28:34,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:28:34 BoogieIcfgContainer [2020-09-24 18:28:34,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:28:34,547 INFO L168 Benchmark]: Toolchain (without parser) took 11035.72 ms. Allocated memory was 138.4 MB in the beginning and 313.0 MB in the end (delta: 174.6 MB). Free memory was 101.5 MB in the beginning and 215.0 MB in the end (delta: -113.5 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,548 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 90.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,551 INFO L168 Benchmark]: Boogie Preprocessor took 136.15 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,551 INFO L168 Benchmark]: RCFGBuilder took 496.78 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 156.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,553 INFO L168 Benchmark]: TraceAbstraction took 10021.56 ms. Allocated memory was 200.8 MB in the beginning and 313.0 MB in the end (delta: 112.2 MB). Free memory was 156.1 MB in the beginning and 215.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:34,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 90.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.15 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.78 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 156.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10021.56 ms. Allocated memory was 200.8 MB in the beginning and 313.0 MB in the end (delta: 112.2 MB). Free memory was 156.1 MB in the beginning and 215.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i