/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:50:04,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:50:04,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:50:04,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:50:04,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:50:04,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:50:04,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:50:04,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:50:04,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:50:04,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:50:04,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:50:04,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:50:04,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:50:04,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:50:04,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:50:04,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:50:04,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:50:04,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:50:04,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:50:04,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:50:04,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:50:04,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:50:04,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:50:04,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:50:04,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:50:04,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:50:04,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:50:04,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:50:04,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:50:04,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:50:04,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:50:04,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:50:04,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:50:04,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:50:04,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:50:04,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:50:04,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:50:04,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:50:04,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:50:04,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:50:04,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:50:04,804 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 [2020-10-29 03:50:04,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:50:04,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:50:04,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:50:04,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:50:04,860 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:50:04,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:50:04,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:50:04,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:50:04,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:50:04,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:50:04,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:50:04,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:50:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:50:04,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:50:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:50:04,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:50:04,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:50:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:50:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:50:04,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:50:04,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:50:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:04,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:50:04,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:50:04,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:50:04,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:50:04,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:50:04,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:50:04,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:50:04,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:50:05,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:50:05,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:50:05,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:50:05,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:50:05,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:50:05,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-29 03:50:05,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b21ae6b/f8cb4a046dfb40098b20d66d00435bb9/FLAGa13faf394 [2020-10-29 03:50:06,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:50:06,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-29 03:50:06,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b21ae6b/f8cb4a046dfb40098b20d66d00435bb9/FLAGa13faf394 [2020-10-29 03:50:06,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b21ae6b/f8cb4a046dfb40098b20d66d00435bb9 [2020-10-29 03:50:06,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:50:06,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:50:06,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:06,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:50:06,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:50:06,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f63565a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06, skipping insertion in model container [2020-10-29 03:50:06,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:50:06,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:50:06,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:06,656 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:50:06,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:06,697 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:50:06,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06 WrapperNode [2020-10-29 03:50:06,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:06,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:50:06,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:50:06,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:50:06,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (1/1) ... [2020-10-29 03:50:06,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:50:06,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:50:06,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:50:06,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:50:06,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (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 [2020-10-29 03:50:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:50:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:50:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:50:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:50:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:50:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:50:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:50:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:50:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:50:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:50:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:50:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:50:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:50:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:50:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:50:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:50:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:50:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:50:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:50:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:50:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:50:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:50:07,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:50:07,341 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:50:07,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:07 BoogieIcfgContainer [2020-10-29 03:50:07,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:50:07,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:50:07,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:50:07,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:50:07,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:50:06" (1/3) ... [2020-10-29 03:50:07,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e359c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:07, skipping insertion in model container [2020-10-29 03:50:07,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:06" (2/3) ... [2020-10-29 03:50:07,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e359c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:07, skipping insertion in model container [2020-10-29 03:50:07,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:07" (3/3) ... [2020-10-29 03:50:07,356 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-10-29 03:50:07,370 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:50:07,375 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:50:07,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:50:07,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:50:07,437 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:50:07,437 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:50:07,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:50:07,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:50:07,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:50:07,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:50:07,438 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:50:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:50:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:07,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:07,476 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] [2020-10-29 03:50:07,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:07,486 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-29 03:50:07,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:07,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447583468] [2020-10-29 03:50:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:08,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-29 03:50:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:08,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:50:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:50:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:50:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:08,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447583468] [2020-10-29 03:50:08,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:08,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:50:08,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801634543] [2020-10-29 03:50:08,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:50:08,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:08,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:50:08,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:08,325 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-29 03:50:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:08,510 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-29 03:50:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:50:08,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-29 03:50:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:08,521 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:50:08,521 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:50:08,525 INFO L677 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 [2020-10-29 03:50:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:50:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:50:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:50:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:50:08,566 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-29 03:50:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:08,566 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:50:08,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:50:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:50:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:08,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:08,568 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] [2020-10-29 03:50:08,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:50:08,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:08,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-29 03:50:08,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:08,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468409438] [2020-10-29 03:50:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 03:50:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:50:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:50:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 03:50:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:09,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:09,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:09,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:09,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 03:50:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:09,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:09,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468409438] [2020-10-29 03:50:09,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:09,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:50:09,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191660886] [2020-10-29 03:50:09,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:50:09,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:09,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:50:09,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:50:09,130 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-29 03:50:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:09,362 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-29 03:50:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:50:09,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:50:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:09,364 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:50:09,364 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:50:09,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:50:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:50:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:50:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:50:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 03:50:09,375 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-29 03:50:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:09,375 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 03:50:09,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:50:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 03:50:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:09,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:09,377 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] [2020-10-29 03:50:09,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:50:09,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:09,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-29 03:50:09,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:09,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192431547] [2020-10-29 03:50:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:10,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-29 03:50:10,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:50:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:10,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:10,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:10,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:10,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192431547] [2020-10-29 03:50:10,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:10,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:10,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938869700] [2020-10-29 03:50:10,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:10,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:10,811 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-29 03:50:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:11,398 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-29 03:50:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:50:11,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:50:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:11,400 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:50:11,400 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:50:11,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:50:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-29 03:50:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:50:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 03:50:11,412 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28 [2020-10-29 03:50:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:11,412 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 03:50:11,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 03:50:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:11,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:11,414 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] [2020-10-29 03:50:11,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:50:11,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-29 03:50:11,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:11,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661922566] [2020-10-29 03:50:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:50:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:50:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:12,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:12,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:12,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:12,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:12,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:12,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:50:12,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661922566] [2020-10-29 03:50:12,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:12,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:50:12,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709643772] [2020-10-29 03:50:12,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:50:12,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:50:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:50:12,176 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-29 03:50:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:12,607 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-29 03:50:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:50:12,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-29 03:50:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:12,609 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:50:12,609 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:50:12,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:50:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:50:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 03:50:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:50:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-29 03:50:12,618 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2020-10-29 03:50:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:12,618 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-29 03:50:12,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:50:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-29 03:50:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:50:12,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:12,620 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] [2020-10-29 03:50:12,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:50:12,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:12,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-10-29 03:50:12,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:12,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896330872] [2020-10-29 03:50:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:17,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:50:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 03:50:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:50:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:17,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:50:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:50:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:50:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:18,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:50:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:18,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:18,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:18,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896330872] [2020-10-29 03:50:18,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:18,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:50:18,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628109430] [2020-10-29 03:50:18,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:50:18,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:18,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:50:18,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:50:18,138 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 13 states. [2020-10-29 03:50:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:19,022 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-29 03:50:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:50:19,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-29 03:50:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:19,027 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:50:19,027 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:50:19,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:50:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:50:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 03:50:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:50:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-29 03:50:19,038 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2020-10-29 03:50:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:19,038 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-29 03:50:19,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:50:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-29 03:50:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:50:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:19,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 03:50:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:50:19,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1090575102, now seen corresponding path program 2 times [2020-10-29 03:50:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860785540] [2020-10-29 03:50:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:24,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:24,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:50:24,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:50:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:50:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:24,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:24,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:50:24,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860785540] [2020-10-29 03:50:24,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:24,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:50:24,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35727927] [2020-10-29 03:50:24,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:50:24,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:24,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:50:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:50:24,438 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 13 states. [2020-10-29 03:50:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:25,506 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-29 03:50:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:50:25,508 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-29 03:50:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:25,510 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:50:25,510 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:50:25,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:50:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:50:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-29 03:50:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:50:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-29 03:50:25,518 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 37 [2020-10-29 03:50:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:25,519 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-29 03:50:25,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:50:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-29 03:50:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:50:25,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:25,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-29 03:50:25,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:50:25,521 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:25,521 INFO L82 PathProgramCache]: Analyzing trace with hash 553320601, now seen corresponding path program 3 times [2020-10-29 03:50:25,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:25,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892609153] [2020-10-29 03:50:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:50:25,542 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:50:25,543 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:50:25,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:50:25,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:50:25 BoogieIcfgContainer [2020-10-29 03:50:25,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:50:25,569 INFO L168 Benchmark]: Toolchain (without parser) took 19138.17 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 126.4 MB in the beginning and 185.5 MB in the end (delta: -59.0 MB). Peak memory consumption was 105.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:25,570 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:25,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 116.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:25,571 INFO L168 Benchmark]: Boogie Preprocessor took 43.76 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:25,572 INFO L168 Benchmark]: RCFGBuilder took 599.38 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:25,573 INFO L168 Benchmark]: TraceAbstraction took 18219.69 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 132.1 MB in the beginning and 185.5 MB in the end (delta: -53.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:25,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 116.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.76 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.38 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18219.69 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 132.1 MB in the beginning and 185.5 MB in the end (delta: -53.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i