/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:08:35,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:08:35,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:08:35,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:08:35,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:08:35,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:08:35,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:08:35,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:08:35,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:08:35,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:08:35,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:08:35,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:08:35,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:08:35,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:08:35,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:08:35,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:08:35,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:08:35,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:08:35,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:08:35,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:08:35,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:08:35,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:08:35,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:08:35,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:08:35,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:08:35,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:08:35,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:08:35,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:08:35,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:08:35,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:08:35,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:08:35,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:08:35,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:08:35,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:08:35,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:08:35,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:08:35,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:08:35,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:08:35,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:08:35,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:08:35,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:08:35,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:08:35,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:08:35,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:08:35,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:08:35,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:08:35,891 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:08:35,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:08:35,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:08:35,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:08:35,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:08:35,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:08:35,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:08:35,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:08:35,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:08:35,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:08:35,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:08:35,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:08:35,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:08:35,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:08:35,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:08:35,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:08:35,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:08:35,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:08:35,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:08:35,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:08:35,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:08:35,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:08:35,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:08:35,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:08:35,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:08:35,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:08:36,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:08:36,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:08:36,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:08:36,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:08:36,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:08:36,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-25 01:08:36,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964e3b821/e6db2f6454c64655b7dfafb94486882e/FLAGf6f074565 [2020-09-25 01:08:37,160 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:08:37,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-25 01:08:37,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964e3b821/e6db2f6454c64655b7dfafb94486882e/FLAGf6f074565 [2020-09-25 01:08:37,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964e3b821/e6db2f6454c64655b7dfafb94486882e [2020-09-25 01:08:37,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:08:37,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:08:37,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:08:37,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:08:37,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:08:37,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:37,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c54ab82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37, skipping insertion in model container [2020-09-25 01:08:37,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:37,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:08:37,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:08:37,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:08:37,822 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:08:37,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:08:37,902 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:08:37,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37 WrapperNode [2020-09-25 01:08:37,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:08:37,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:08:37,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:08:37,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:08:38,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... [2020-09-25 01:08:38,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:08:38,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:08:38,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:08:38,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:08:38,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:08:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:08:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:08:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:08:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:08:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:08:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:08:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:08:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:08:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:08:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:08:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:08:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:08:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:08:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:08:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:08:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:08:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:08:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:08:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:08:38,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:08:38,517 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 01:08:38,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:08:38 BoogieIcfgContainer [2020-09-25 01:08:38,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:08:38,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:08:38,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:08:38,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:08:38,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:08:37" (1/3) ... [2020-09-25 01:08:38,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4220549c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:08:38, skipping insertion in model container [2020-09-25 01:08:38,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:08:37" (2/3) ... [2020-09-25 01:08:38,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4220549c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:08:38, skipping insertion in model container [2020-09-25 01:08:38,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:08:38" (3/3) ... [2020-09-25 01:08:38,533 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-25 01:08:38,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:08:38,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:08:38,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:08:38,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:08:38,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:08:38,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:08:38,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:08:38,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:08:38,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:08:38,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:08:38,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:08:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-25 01:08:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:08:38,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:38,677 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] [2020-09-25 01:08:38,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:38,694 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-25 01:08:38,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:38,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233500595] [2020-09-25 01:08:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:08:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:08:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 01:08:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:08:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:08:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:08:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:39,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:39,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:08:39,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:08:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:08:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:39,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:39,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:08:39,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:08:39,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:08:39,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233500595] [2020-09-25 01:08:39,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:08:39,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:08:39,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835736730] [2020-09-25 01:08:39,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:08:39,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:08:39,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:08:39,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:08:39,518 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-25 01:08:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:08:39,697 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-25 01:08:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:08:39,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-25 01:08:39,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:08:39,711 INFO L225 Difference]: With dead ends: 101 [2020-09-25 01:08:39,711 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 01:08:39,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:08:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 01:08:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 01:08:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 01:08:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-25 01:08:39,767 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-25 01:08:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:08:39,768 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-25 01:08:39,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:08:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-25 01:08:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:08:39,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:39,770 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] [2020-09-25 01:08:39,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:08:39,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:39,771 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-25 01:08:39,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:39,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694709368] [2020-09-25 01:08:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:40,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:40,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:08:40,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:08:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 01:08:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:08:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 01:08:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 01:08:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:08:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:40,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:40,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:08:40,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:08:40,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:08:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:08:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:08:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:08:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:08:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:08:40,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694709368] [2020-09-25 01:08:40,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:08:40,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:08:40,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628853672] [2020-09-25 01:08:40,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:08:40,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:08:40,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:08:40,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:08:40,321 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-25 01:08:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:08:40,480 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-25 01:08:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:08:40,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 01:08:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:08:40,483 INFO L225 Difference]: With dead ends: 67 [2020-09-25 01:08:40,483 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 01:08:40,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:08:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 01:08:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-25 01:08:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 01:08:40,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-25 01:08:40,495 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-25 01:08:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:08:40,495 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-25 01:08:40,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:08:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-25 01:08:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 01:08:40,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:40,497 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] [2020-09-25 01:08:40,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:08:40,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-25 01:08:40,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:40,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523403145] [2020-09-25 01:08:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 01:08:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:08:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2269 [2020-09-25 01:08:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:08:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 01:08:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 01:08:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:08:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:08:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:08:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:08:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:42,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:42,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:08:42,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:08:42,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:42,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:08:42,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523403145] [2020-09-25 01:08:42,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:08:42,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:08:42,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760553918] [2020-09-25 01:08:42,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:08:42,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:08:42,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:08:42,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:08:42,932 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-25 01:08:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:08:43,264 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 01:08:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:08:43,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 01:08:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:08:43,267 INFO L225 Difference]: With dead ends: 64 [2020-09-25 01:08:43,267 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 01:08:43,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:08:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 01:08:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-25 01:08:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 01:08:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-25 01:08:43,277 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-25 01:08:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:08:43,277 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-25 01:08:43,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:08:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-25 01:08:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 01:08:43,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:43,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:08:43,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:08:43,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-25 01:08:43,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:43,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613182603] [2020-09-25 01:08:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 01:08:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:08:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-09-25 01:08:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:08:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 01:08:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:08:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:08:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:44,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:08:44,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:08:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:08:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:08:44,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:08:44,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:08:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:08:44,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613182603] [2020-09-25 01:08:44,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:08:44,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:08:44,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436521714] [2020-09-25 01:08:44,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:08:44,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:08:44,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:08:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:08:44,195 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-25 01:08:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:08:44,326 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 01:08:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:08:44,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 01:08:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:08:44,328 INFO L225 Difference]: With dead ends: 87 [2020-09-25 01:08:44,328 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 01:08:44,329 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 [2020-09-25 01:08:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 01:08:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 01:08:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 01:08:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 01:08:44,336 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-25 01:08:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:08:44,337 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 01:08:44,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:08:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 01:08:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:08:44,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:44,339 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] [2020-09-25 01:08:44,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:08:44,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:44,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-25 01:08:44,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:44,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951837811] [2020-09-25 01:08:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:49,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:49,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 01:08:49,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:08:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 01:08:49,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:08:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:08:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:08:49,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:08:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:49,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:08:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:08:49,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:08:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:08:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:08:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:08:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:08:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:08:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:08:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:08:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:08:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:08:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:08:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:08:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:08:49,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951837811] [2020-09-25 01:08:49,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:08:49,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 01:08:49,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514112272] [2020-09-25 01:08:49,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 01:08:49,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:08:49,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 01:08:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:08:49,727 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 14 states. [2020-09-25 01:08:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:08:50,616 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2020-09-25 01:08:50,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 01:08:50,617 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-25 01:08:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:08:50,618 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:08:50,618 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 01:08:50,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2020-09-25 01:08:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 01:08:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2020-09-25 01:08:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 01:08:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-09-25 01:08:50,642 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 52 [2020-09-25 01:08:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:08:50,642 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-09-25 01:08:50,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 01:08:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-09-25 01:08:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 01:08:50,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:08:50,647 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] [2020-09-25 01:08:50,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:08:50,648 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:08:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:08:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-25 01:08:50,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:08:50,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532256948] [2020-09-25 01:08:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:08:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:08:50,682 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:08:50,682 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:08:50,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:08:50,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:08:50 BoogieIcfgContainer [2020-09-25 01:08:50,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:08:50,721 INFO L168 Benchmark]: Toolchain (without parser) took 13200.07 ms. Allocated memory was 146.8 MB in the beginning and 291.5 MB in the end (delta: 144.7 MB). Free memory was 102.9 MB in the beginning and 110.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 137.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,724 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.51 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,731 INFO L168 Benchmark]: Boogie Preprocessor took 183.66 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,732 INFO L168 Benchmark]: RCFGBuilder took 426.33 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,733 INFO L168 Benchmark]: TraceAbstraction took 12193.32 ms. Allocated memory was 204.5 MB in the beginning and 291.5 MB in the end (delta: 87.0 MB). Free memory was 162.8 MB in the beginning and 110.7 MB in the end (delta: 52.1 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:08:50,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.51 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.66 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.33 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12193.32 ms. Allocated memory was 204.5 MB in the beginning and 291.5 MB in the end (delta: 87.0 MB). Free memory was 162.8 MB in the beginning and 110.7 MB in the end (delta: 52.1 MB). Peak memory consumption was 139.2 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