/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=1000 --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/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:32:54,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:32:54,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:32:54,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:32:54,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:32:54,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:32:54,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:32:54,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:32:54,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:32:54,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:32:54,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:32:54,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:32:54,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:32:54,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:32:54,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:32:54,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:32:54,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:32:54,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:32:54,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:32:54,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:32:54,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:32:54,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:32:54,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:32:54,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:32:54,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:32:54,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:32:54,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:32:54,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:32:54,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:32:54,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:32:54,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:32:54,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:32:54,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:32:54,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:32:54,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:32:54,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:32:54,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:32:54,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:32:54,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:32:54,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:32:54,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:32:54,465 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 19:32:54,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:32:54,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:32:54,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:32:54,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:32:54,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:32:54,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:32:54,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:32:54,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:32:54,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:32:54,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:32:54,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:32:54,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:32:54,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:32:54,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:32:54,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:32:54,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:32:54,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:32:54,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:32:54,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:32:54,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:32:54,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:32:54,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:54,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:32:54,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:32:54,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:32:54,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:32:54,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:32:54,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:32:54,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:32:54,514 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:32:54,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:32:54,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:32:54,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:32:55,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:32:55,001 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:32:55,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 19:32:55,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28a8795a/f41ce28bffd64e988be21904575d2f02/FLAGc8e4f0a19 [2020-09-24 19:32:55,615 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:32:55,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 19:32:55,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28a8795a/f41ce28bffd64e988be21904575d2f02/FLAGc8e4f0a19 [2020-09-24 19:32:55,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28a8795a/f41ce28bffd64e988be21904575d2f02 [2020-09-24 19:32:55,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:32:55,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:32:55,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:55,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:32:55,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:32:55,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:55" (1/1) ... [2020-09-24 19:32:55,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:55, skipping insertion in model container [2020-09-24 19:32:55,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:55" (1/1) ... [2020-09-24 19:32:56,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:32:56,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:32:56,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:56,273 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:32:56,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:56,312 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:32:56,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56 WrapperNode [2020-09-24 19:32:56,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:56,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:32:56,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:32:56,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:32:56,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:32:56,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:32:56,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:32:56,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:32:56,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (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 19:32:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:32:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:32:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:32:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:32:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:32:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:32:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:32:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:32:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:32:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:32:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:32:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:32:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:32:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:32:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:32:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:32:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:32:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:32:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:32:56,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:32:56,875 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:32:56,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:56 BoogieIcfgContainer [2020-09-24 19:32:56,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:32:56,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:32:56,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:32:56,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:32:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:32:55" (1/3) ... [2020-09-24 19:32:56,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2f7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:56, skipping insertion in model container [2020-09-24 19:32:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (2/3) ... [2020-09-24 19:32:56,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2f7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:56, skipping insertion in model container [2020-09-24 19:32:56,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:56" (3/3) ... [2020-09-24 19:32:56,889 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-24 19:32:56,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:32:56,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:32:56,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:32:56,974 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:32:56,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:32:56,975 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:32:56,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:32:56,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:32:56,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:32:56,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:32:56,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:32:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 19:32:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:32:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:57,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:57,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:57,015 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 19:32:57,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:57,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656284617] [2020-09-24 19:32:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:57,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:32:57,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-24 19:32:57,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:32:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:32:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:57,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:32:57,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:32:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:32:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:32:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:32:57,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:57,715 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 19:32:57,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656284617] [2020-09-24 19:32:57,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:57,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:32:57,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706842235] [2020-09-24 19:32:57,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:32:57,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:57,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:32:57,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:57,747 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 19:32:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:57,907 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 19:32:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:32:57,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 19:32:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:57,921 INFO L225 Difference]: With dead ends: 101 [2020-09-24 19:32:57,921 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 19:32:57,925 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 19:32:57,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 19:32:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 19:32:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 19:32:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 19:32:57,978 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 19:32:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:57,979 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 19:32:57,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:32:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 19:32:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:32:57,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:57,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:57,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:32:57,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 19:32:57,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:57,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429658106] [2020-09-24 19:32:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:32:58,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 19:32:58,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:32:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:32:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:32:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:32:58,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:32:58,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:32:58,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:32:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:32:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:32:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:32:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:32:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:58,469 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 19:32:58,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429658106] [2020-09-24 19:32:58,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:58,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:32:58,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219572988] [2020-09-24 19:32:58,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:32:58,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:58,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:32:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:32:58,474 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 19:32:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:58,679 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 19:32:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:32:58,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 19:32:58,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:58,682 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:32:58,682 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 19:32:58,683 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 19:32:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 19:32:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 19:32:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 19:32:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 19:32:58,703 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 19:32:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:58,703 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 19:32:58,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:32:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 19:32:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 19:32:58,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:58,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:58,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:32:58,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 19:32:58,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:58,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854138797] [2020-09-24 19:32:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:32:59,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:32:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:32:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:32:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:32:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:32:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-09-24 19:32:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:32:59,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:32:59,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:32:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:32:59,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:32:59,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:32:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:32:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:32:59,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854138797] [2020-09-24 19:32:59,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:59,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:32:59,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696450933] [2020-09-24 19:32:59,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:32:59,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:32:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:32:59,899 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2020-09-24 19:33:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:00,136 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 19:33:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:33:00,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-24 19:33:00,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:00,138 INFO L225 Difference]: With dead ends: 64 [2020-09-24 19:33:00,138 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:33:00,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:33:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:33:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 19:33:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 19:33:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 19:33:00,147 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 19:33:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:00,148 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 19:33:00,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:33:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 19:33:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:33:00,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:00,150 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] [2020-09-24 19:33:00,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:33:00,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:00,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 19:33:00,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:00,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518583884] [2020-09-24 19:33:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:33:01,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:33:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-24 19:33:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:33:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:33:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:33:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:01,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:33:01,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:33:01,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518583884] [2020-09-24 19:33:01,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:01,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:33:01,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757227185] [2020-09-24 19:33:01,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:33:01,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:33:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:33:01,115 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 19:33:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:01,239 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 19:33:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:33:01,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 19:33:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:01,241 INFO L225 Difference]: With dead ends: 87 [2020-09-24 19:33:01,241 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:33:01,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:33:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:33:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 19:33:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 19:33:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 19:33:01,255 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 19:33:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:01,256 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 19:33:01,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:33:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 19:33:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:33:01,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:01,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:01,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:33:01,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 19:33:01,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:01,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782456177] [2020-09-24 19:33:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:33:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:33:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:33:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:33:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:33:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:33:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:33:02,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:33:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:33:02,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782456177] [2020-09-24 19:33:02,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:02,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:33:02,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341691515] [2020-09-24 19:33:02,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:33:02,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:33:02,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:33:02,437 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-24 19:33:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:02,835 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-24 19:33:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:33:02,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 19:33:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:02,839 INFO L225 Difference]: With dead ends: 93 [2020-09-24 19:33:02,839 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 19:33:02,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:33:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 19:33:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-24 19:33:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 19:33:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-24 19:33:02,859 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-24 19:33:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:02,859 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-24 19:33:02,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:33:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-24 19:33:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 19:33:02,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:02,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:02,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:33:02,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 19:33:02,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630694184] [2020-09-24 19:33:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:33:03,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:33:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:33:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:33:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:33:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:04,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:33:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:33:04,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630694184] [2020-09-24 19:33:04,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:04,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:33:04,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956619951] [2020-09-24 19:33:04,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:33:04,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:33:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:33:04,501 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 18 states. [2020-09-24 19:33:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:05,617 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-09-24 19:33:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:33:05,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-24 19:33:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:05,619 INFO L225 Difference]: With dead ends: 138 [2020-09-24 19:33:05,619 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 19:33:05,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 19:33:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 19:33:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2020-09-24 19:33:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 19:33:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-09-24 19:33:05,630 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 58 [2020-09-24 19:33:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:05,631 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-09-24 19:33:05,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:33:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-09-24 19:33:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 19:33:05,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:05,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:05,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:33:05,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2138852750, now seen corresponding path program 2 times [2020-09-24 19:33:05,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849337914] [2020-09-24 19:33:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:06,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:33:06,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:33:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:33:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:33:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:33:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:33:06,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:06,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:06,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:06,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:33:06,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:06,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:06,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:06,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:06,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:06,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:33:06,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849337914] [2020-09-24 19:33:06,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:06,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:33:06,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220130763] [2020-09-24 19:33:06,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:33:06,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:06,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:33:06,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:33:06,876 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 13 states. [2020-09-24 19:33:11,779 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-09-24 19:33:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:12,065 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-09-24 19:33:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:33:12,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-09-24 19:33:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:12,069 INFO L225 Difference]: With dead ends: 135 [2020-09-24 19:33:12,069 INFO L226 Difference]: Without dead ends: 129 [2020-09-24 19:33:12,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:33:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-24 19:33:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2020-09-24 19:33:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 19:33:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-09-24 19:33:12,097 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 64 [2020-09-24 19:33:12,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:12,097 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-09-24 19:33:12,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:33:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-09-24 19:33:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 19:33:12,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:12,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:12,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:33:12,100 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 3 times [2020-09-24 19:33:12,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:12,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801142034] [2020-09-24 19:33:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:13,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:13,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:33:13,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:33:13,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:33:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:33:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 19:33:13,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:13,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:13,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:33:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:13,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:33:13,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801142034] [2020-09-24 19:33:13,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:13,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 19:33:13,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299991510] [2020-09-24 19:33:13,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 19:33:13,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:13,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 19:33:13,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:33:13,272 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 14 states. [2020-09-24 19:33:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:13,831 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2020-09-24 19:33:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:33:13,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-09-24 19:33:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:13,833 INFO L225 Difference]: With dead ends: 162 [2020-09-24 19:33:13,833 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 19:33:13,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:33:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 19:33:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-09-24 19:33:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 19:33:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-09-24 19:33:13,850 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 68 [2020-09-24 19:33:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:13,851 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-09-24 19:33:13,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 19:33:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-09-24 19:33:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 19:33:13,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:13,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:13,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:33:13,853 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607259, now seen corresponding path program 4 times [2020-09-24 19:33:13,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:13,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457445820] [2020-09-24 19:33:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:14,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:14,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 19:33:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:33:14,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:33:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:33:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:33:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:33:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:15,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:15,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:33:15,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 19:33:15,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457445820] [2020-09-24 19:33:15,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:15,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 19:33:15,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889751900] [2020-09-24 19:33:15,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 19:33:15,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:15,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 19:33:15,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:33:15,123 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 14 states. [2020-09-24 19:33:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:15,698 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2020-09-24 19:33:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 19:33:15,699 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-09-24 19:33:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:15,702 INFO L225 Difference]: With dead ends: 160 [2020-09-24 19:33:15,702 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 19:33:15,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-09-24 19:33:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 19:33:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 77. [2020-09-24 19:33:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 19:33:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-09-24 19:33:15,723 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 70 [2020-09-24 19:33:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:15,727 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-09-24 19:33:15,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 19:33:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-09-24 19:33:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 19:33:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:15,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:15,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:33:15,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 5 times [2020-09-24 19:33:15,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:15,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835096363] [2020-09-24 19:33:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:33:15,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:33:15,763 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:33:15,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:33:15,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:33:15 BoogieIcfgContainer [2020-09-24 19:33:15,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:33:15,826 INFO L168 Benchmark]: Toolchain (without parser) took 19854.59 ms. Allocated memory was 140.0 MB in the beginning and 325.1 MB in the end (delta: 185.1 MB). Free memory was 103.1 MB in the beginning and 104.0 MB in the end (delta: -867.9 kB). Peak memory consumption was 184.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,827 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.49 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,833 INFO L168 Benchmark]: Boogie Preprocessor took 146.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,834 INFO L168 Benchmark]: RCFGBuilder took 419.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 161.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,838 INFO L168 Benchmark]: TraceAbstraction took 18939.28 ms. Allocated memory was 202.9 MB in the beginning and 325.1 MB in the end (delta: 122.2 MB). Free memory was 161.2 MB in the beginning and 104.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 179.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:15,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.49 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 161.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18939.28 ms. Allocated memory was 202.9 MB in the beginning and 325.1 MB in the end (delta: 122.2 MB). Free memory was 161.2 MB in the beginning and 104.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 179.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i