/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=SHALLOWEST --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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:00,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:00,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:00,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:00,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:00,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:00,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:00,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:00,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:00,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:00,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:00,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:00,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:00,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:00,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:00,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:00,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:00,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:00,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:00,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:00,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:00,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:00,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:00,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:00,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:00,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:00,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:00,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:00,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:00,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:00,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:00,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:00,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:00,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:00,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:00,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:00,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:00,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:00,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:00,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:00,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:00,994 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 00:03:01,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:01,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:01,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:01,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:01,023 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:01,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:01,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:01,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:01,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:01,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:01,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:01,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:01,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:01,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:01,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:01,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:01,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:01,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:01,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:01,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:01,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:01,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:01,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:01,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:01,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:01,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:01,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:01,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:01,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:01,028 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:01,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:01,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:01,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:01,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:01,525 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:01,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-09-25 00:03:01,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481e2334f/2cdb9127ef8348f3a4f4b3870023f796/FLAG863c85ad4 [2020-09-25 00:03:02,172 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:02,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-09-25 00:03:02,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481e2334f/2cdb9127ef8348f3a4f4b3870023f796/FLAG863c85ad4 [2020-09-25 00:03:02,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481e2334f/2cdb9127ef8348f3a4f4b3870023f796 [2020-09-25 00:03:02,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:02,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:02,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:02,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:02,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:02,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:02,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1571b016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02, skipping insertion in model container [2020-09-25 00:03:02,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:02,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:02,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:02,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:02,844 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:02,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:02,889 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:02,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02 WrapperNode [2020-09-25 00:03:02,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:02,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:02,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:02,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:02,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:02,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:02,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:02,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:03,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:03,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:03,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (1/1) ... [2020-09-25 00:03:03,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:03,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:03,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:03,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:03,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (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 00:03:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:03,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:03,410 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:03:03,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:03 BoogieIcfgContainer [2020-09-25 00:03:03,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:03,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:03,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:03,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:03,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:02" (1/3) ... [2020-09-25 00:03:03,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499c9549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:03, skipping insertion in model container [2020-09-25 00:03:03,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:02" (2/3) ... [2020-09-25 00:03:03,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499c9549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:03, skipping insertion in model container [2020-09-25 00:03:03,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:03" (3/3) ... [2020-09-25 00:03:03,426 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-09-25 00:03:03,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:03,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:03,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:03,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:03,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:03,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:03,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:03,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:03,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:03,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:03,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-25 00:03:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 00:03:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:03,545 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] [2020-09-25 00:03:03,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash -386984160, now seen corresponding path program 1 times [2020-09-25 00:03:03,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:03,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675961910] [2020-09-25 00:03:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:03,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:03,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 00:03:03,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:03:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 00:03:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:03:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:03:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:04,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:03:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:04,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:04,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:04,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:03:04,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:03:04,111 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 00:03:04,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675961910] [2020-09-25 00:03:04,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:04,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:03:04,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238996614] [2020-09-25 00:03:04,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:03:04,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:04,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:03:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:03:04,154 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-25 00:03:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:04,354 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-09-25 00:03:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:03:04,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 00:03:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:04,368 INFO L225 Difference]: With dead ends: 107 [2020-09-25 00:03:04,368 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:03:04,373 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 00:03:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:03:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 00:03:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 00:03:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 00:03:04,435 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 31 [2020-09-25 00:03:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:04,437 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 00:03:04,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:03:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 00:03:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 00:03:04,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:04,441 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] [2020-09-25 00:03:04,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:04,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:04,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1278196063, now seen corresponding path program 1 times [2020-09-25 00:03:04,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:04,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012515226] [2020-09-25 00:03:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:05,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 00:03:05,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:03:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-09-25 00:03:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:03:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:03:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:05,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:05,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:05,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:05,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:05,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:03:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:05,359 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 00:03:05,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012515226] [2020-09-25 00:03:05,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:05,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:05,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908921467] [2020-09-25 00:03:05,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:05,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:05,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:05,364 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2020-09-25 00:03:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:05,567 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2020-09-25 00:03:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:05,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 00:03:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:05,569 INFO L225 Difference]: With dead ends: 85 [2020-09-25 00:03:05,569 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 00:03:05,571 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 00:03:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 00:03:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-09-25 00:03:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 00:03:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 00:03:05,582 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 31 [2020-09-25 00:03:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:05,583 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 00:03:05,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 00:03:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 00:03:05,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:05,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:05,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:05,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:05,586 INFO L82 PathProgramCache]: Analyzing trace with hash -620119431, now seen corresponding path program 1 times [2020-09-25 00:03:05,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:05,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803124258] [2020-09-25 00:03:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:07,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 00:03:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:03:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2194 [2020-09-25 00:03:07,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:03:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:03:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:08,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:03:08,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:08,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803124258] [2020-09-25 00:03:08,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:08,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:03:08,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721443126] [2020-09-25 00:03:08,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:03:08,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:08,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:03:08,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:03:08,181 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 16 states. [2020-09-25 00:03:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:09,905 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2020-09-25 00:03:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-25 00:03:09,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-09-25 00:03:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:09,910 INFO L225 Difference]: With dead ends: 162 [2020-09-25 00:03:09,911 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 00:03:09,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=357, Invalid=1713, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 00:03:09,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 00:03:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 98. [2020-09-25 00:03:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 00:03:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2020-09-25 00:03:09,935 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 46 [2020-09-25 00:03:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:09,936 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2020-09-25 00:03:09,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:03:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2020-09-25 00:03:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 00:03:09,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:09,938 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] [2020-09-25 00:03:09,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:03:09,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1321326334, now seen corresponding path program 1 times [2020-09-25 00:03:09,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:09,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484787501] [2020-09-25 00:03:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:03:09,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:03:09,959 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:09,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:03:09,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:09 BoogieIcfgContainer [2020-09-25 00:03:09,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:09,991 INFO L168 Benchmark]: Toolchain (without parser) took 7452.71 ms. Allocated memory was 138.9 MB in the beginning and 283.1 MB in the end (delta: 144.2 MB). Free memory was 102.2 MB in the beginning and 206.8 MB in the end (delta: -104.7 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:09,992 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:03:09,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:09,994 INFO L168 Benchmark]: Boogie Preprocessor took 124.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:09,995 INFO L168 Benchmark]: RCFGBuilder took 400.82 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 160.8 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:09,996 INFO L168 Benchmark]: TraceAbstraction took 6570.21 ms. Allocated memory was 201.3 MB in the beginning and 283.1 MB in the end (delta: 81.8 MB). Free memory was 160.1 MB in the beginning and 206.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:10,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.82 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 160.8 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6570.21 ms. Allocated memory was 201.3 MB in the beginning and 283.1 MB in the end (delta: 81.8 MB). Free memory was 160.1 MB in the beginning and 206.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 35.1 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 *a = malloc(sizeof(int)*N); [L28] i=0 [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ [L33] COND FALSE !(i