/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:16:35,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:16:35,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:16:35,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:16:35,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:16:35,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:16:35,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:16:35,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:16:35,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:16:35,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:16:35,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:16:35,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:16:35,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:16:35,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:16:35,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:16:35,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:16:35,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:16:35,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:16:35,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:16:35,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:16:35,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:16:35,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:16:35,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:16:35,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:16:35,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:16:35,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:16:35,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:16:35,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:16:35,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:16:35,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:16:35,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:16:35,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:16:35,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:16:35,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:16:35,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:16:35,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:16:35,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:16:35,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:16:35,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:16:35,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:16:35,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:16:35,838 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 12:16:35,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:16:35,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:16:35,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:16:35,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:16:35,883 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:16:35,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:16:35,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:16:35,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:16:35,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:16:35,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:16:35,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:16:35,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:16:35,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:16:35,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:16:35,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:16:35,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:16:35,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:16:35,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:16:35,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:16:35,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:16:35,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:16:35,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:16:35,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:16:35,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:16:35,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:16:35,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:16:35,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:16:35,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:16:35,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:16:35,890 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:16:36,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:16:36,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:16:36,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:16:36,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:16:36,393 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:16:36,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-25 12:16:36,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12e2f5d/e7449ecbdf54410ca3c1da054a98b853/FLAG04e4557f2 [2020-09-25 12:16:37,031 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:16:37,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-25 12:16:37,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12e2f5d/e7449ecbdf54410ca3c1da054a98b853/FLAG04e4557f2 [2020-09-25 12:16:37,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12e2f5d/e7449ecbdf54410ca3c1da054a98b853 [2020-09-25 12:16:37,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:16:37,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:16:37,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:37,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:16:37,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:16:37,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37, skipping insertion in model container [2020-09-25 12:16:37,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:16:37,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:16:37,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:37,672 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:16:37,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:37,705 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:16:37,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37 WrapperNode [2020-09-25 12:16:37,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:37,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:16:37,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:16:37,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:16:37,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (1/1) ... [2020-09-25 12:16:37,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:16:37,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:16:37,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:16:37,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:16:37,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (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 12:16:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:16:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:16:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 12:16:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-25 12:16:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:16:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:16:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:16:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 12:16:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-25 12:16:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:16:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:16:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:16:38,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:16:38,131 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:16:38,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:38 BoogieIcfgContainer [2020-09-25 12:16:38,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:16:38,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:16:38,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:16:38,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:16:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:16:37" (1/3) ... [2020-09-25 12:16:38,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2364c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:38, skipping insertion in model container [2020-09-25 12:16:38,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:37" (2/3) ... [2020-09-25 12:16:38,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2364c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:38, skipping insertion in model container [2020-09-25 12:16:38,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:38" (3/3) ... [2020-09-25 12:16:38,156 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-09-25 12:16:38,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:16:38,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:16:38,227 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:16:38,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:16:38,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:16:38,260 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:16:38,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:16:38,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:16:38,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:16:38,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:16:38,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:16:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 12:16:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:16:38,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:38,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:38,291 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash -588914908, now seen corresponding path program 1 times [2020-09-25 12:16:38,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:38,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227621052] [2020-09-25 12:16:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:38,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:16:38,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 12:16:38,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:38,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:16:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:38,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:38,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:38,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:38,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:16:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:38,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:38,626 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 12:16:38,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227621052] [2020-09-25 12:16:38,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:16:38,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:16:38,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770209078] [2020-09-25 12:16:38,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:16:38,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:38,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:16:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:16:38,658 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-25 12:16:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:38,763 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-09-25 12:16:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:16:38,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:16:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:38,780 INFO L225 Difference]: With dead ends: 46 [2020-09-25 12:16:38,781 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 12:16:38,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:16:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 12:16:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-25 12:16:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 12:16:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-25 12:16:38,846 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-09-25 12:16:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:38,847 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-25 12:16:38,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:16:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-25 12:16:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 12:16:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:38,850 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] [2020-09-25 12:16:38,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:16:38,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1852809946, now seen corresponding path program 1 times [2020-09-25 12:16:38,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:38,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777764174] [2020-09-25 12:16:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:16:39,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 12:16:39,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:16:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:16:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:16:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:16:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:16:39,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,377 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 12:16:39,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777764174] [2020-09-25 12:16:39,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:16:39,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:16:39,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165499095] [2020-09-25 12:16:39,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:16:39,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:39,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:16:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:16:39,383 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2020-09-25 12:16:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:39,528 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-09-25 12:16:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:16:39,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 12:16:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:39,530 INFO L225 Difference]: With dead ends: 45 [2020-09-25 12:16:39,530 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 12:16:39,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 12:16:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 12:16:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 12:16:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-25 12:16:39,546 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2020-09-25 12:16:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:39,547 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-25 12:16:39,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:16:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-25 12:16:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 12:16:39,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:39,549 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:16:39,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:16:39,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:39,550 INFO L82 PathProgramCache]: Analyzing trace with hash -238705980, now seen corresponding path program 1 times [2020-09-25 12:16:39,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:39,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716622862] [2020-09-25 12:16:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:16:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 12:16:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 12:16:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:39,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:16:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 12:16:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:16:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:40,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:16:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:16:40,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716622862] [2020-09-25 12:16:40,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:40,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:40,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946076397] [2020-09-25 12:16:40,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:40,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:40,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:40,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:40,116 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2020-09-25 12:16:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:40,228 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-25 12:16:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:16:40,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 12:16:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:40,230 INFO L225 Difference]: With dead ends: 55 [2020-09-25 12:16:40,230 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 12:16:40,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 12:16:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-09-25 12:16:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:16:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-25 12:16:40,241 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2020-09-25 12:16:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:40,241 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-25 12:16:40,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-25 12:16:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 12:16:40,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:40,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:40,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:16:40,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2006293766, now seen corresponding path program 1 times [2020-09-25 12:16:40,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:40,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133718724] [2020-09-25 12:16:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:16:40,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:16:40,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:16:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:40,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 12:16:40,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:16:40,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:40,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:16:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:16:40,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:16:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:40,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:16:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:16:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:16:40,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133718724] [2020-09-25 12:16:40,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:40,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:16:40,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940079750] [2020-09-25 12:16:40,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:16:40,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:40,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:16:40,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:16:40,982 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 10 states. [2020-09-25 12:16:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:41,133 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-09-25 12:16:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:41,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-25 12:16:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:41,139 INFO L225 Difference]: With dead ends: 65 [2020-09-25 12:16:41,140 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 12:16:41,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:16:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 12:16:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-09-25 12:16:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 12:16:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 12:16:41,157 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-09-25 12:16:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:41,157 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 12:16:41,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:16:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 12:16:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 12:16:41,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:41,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:41,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:16:41,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:41,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:41,165 INFO L82 PathProgramCache]: Analyzing trace with hash 940355172, now seen corresponding path program 2 times [2020-09-25 12:16:41,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:41,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088373376] [2020-09-25 12:16:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:16:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 12:16:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:41,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:16:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:41,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:41,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:41,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:41,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:41,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:41,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:41,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:16:41,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 12:16:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:41,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:16:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 12:16:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:41,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 12:16:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:16:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:42,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:42,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:16:42,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:42,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:42,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:16:42,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:42,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:16:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:42,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:42,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:42,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:42,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:16:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:16:42,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088373376] [2020-09-25 12:16:42,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:42,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:42,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787842498] [2020-09-25 12:16:42,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:42,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:42,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:42,248 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 11 states. [2020-09-25 12:16:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:42,395 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-09-25 12:16:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:16:42,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 12:16:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:42,398 INFO L225 Difference]: With dead ends: 75 [2020-09-25 12:16:42,398 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 12:16:42,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:16:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 12:16:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-09-25 12:16:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:16:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 12:16:42,416 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2020-09-25 12:16:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:42,417 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 12:16:42,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 12:16:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:16:42,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:42,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:42,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:16:42,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:42,424 INFO L82 PathProgramCache]: Analyzing trace with hash 826985242, now seen corresponding path program 2 times [2020-09-25 12:16:42,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:42,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697532530] [2020-09-25 12:16:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:42,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:42,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:16:42,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 12:16:42,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:42,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:16:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:16:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:16:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:42,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:42,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:42,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:42,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:42,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:16:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:16:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 12:16:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:43,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:16:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:16:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:43,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:16:43,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 12:16:43,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:43,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:16:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:43,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 12:16:43,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:43,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:43,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:16:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:43,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:43,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:43,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:43,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:16:43,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:43,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:16:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:16:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:44,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:44,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:16:44,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697532530] [2020-09-25 12:16:44,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:44,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:16:44,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411959631] [2020-09-25 12:16:44,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:16:44,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:16:44,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:16:44,088 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 15 states. [2020-09-25 12:16:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:44,517 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-09-25 12:16:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:16:44,518 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 12:16:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:44,522 INFO L225 Difference]: With dead ends: 85 [2020-09-25 12:16:44,522 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 12:16:44,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:16:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 12:16:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2020-09-25 12:16:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 12:16:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-09-25 12:16:44,539 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 56 [2020-09-25 12:16:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:44,539 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-09-25 12:16:44,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:16:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-09-25 12:16:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 12:16:44,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:44,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:44,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:44,543 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash -996081148, now seen corresponding path program 3 times [2020-09-25 12:16:44,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:44,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657981431] [2020-09-25 12:16:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:16:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-09-25 12:16:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:45,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:16:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:16:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:45,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:46,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:46,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:16:46,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-25 12:16:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:46,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:16:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 12:16:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:46,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:46,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:16:46,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 12:16:46,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:46,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:16:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:16:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:47,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:16:47,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 12:16:47,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:47,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:16:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:16:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 12:16:47,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:47,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:16:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:16:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 12:16:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:47,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:47,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:16:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:16:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:47,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:16:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:47,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:16:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:47,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 12:16:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657981431] [2020-09-25 12:16:47,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:47,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:16:47,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146954576] [2020-09-25 12:16:47,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:16:47,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:47,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:16:47,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:47,952 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 12 states. [2020-09-25 12:16:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:48,573 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-25 12:16:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:16:48,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-25 12:16:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:48,576 INFO L225 Difference]: With dead ends: 108 [2020-09-25 12:16:48,576 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:16:48,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:16:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:16:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:16:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:16:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:16:48,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-09-25 12:16:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:48,585 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:16:48,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:16:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:16:48,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:16:48,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:48,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:16:48,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:16:48,789 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:16:48,789 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (= id2_~x |id2_#in~x|) (or (<= (+ |id2_#in~x| 1) 0) (<= 1 |id2_#in~x|))) [2020-09-25 12:16:48,789 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2020-09-25 12:16:48,790 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2020-09-25 12:16:48,790 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2020-09-25 12:16:48,791 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:16:48,791 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:16:48,791 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:16:48,791 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:16:48,791 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-09-25 12:16:48,791 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2020-09-25 12:16:48,791 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 5 main_~input~0) [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 12:16:48,792 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 12:16:48,793 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-25 12:16:48,793 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-25 12:16:48,793 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= id_~x |id_#in~x|) (<= |id_#in~x| id_~x)) [2020-09-25 12:16:48,793 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:16:48,793 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 12:16:48,793 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2020-09-25 12:16:48,794 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 12:16:48,794 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 12:16:48,794 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-25 12:16:48,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:16:48 BoogieIcfgContainer [2020-09-25 12:16:48,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:16:48,805 INFO L168 Benchmark]: Toolchain (without parser) took 11410.69 ms. Allocated memory was 137.9 MB in the beginning and 308.8 MB in the end (delta: 170.9 MB). Free memory was 101.1 MB in the beginning and 89.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 182.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,806 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.01 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 91.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,808 INFO L168 Benchmark]: Boogie Preprocessor took 104.69 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,809 INFO L168 Benchmark]: RCFGBuilder took 327.66 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,809 INFO L168 Benchmark]: TraceAbstraction took 10657.81 ms. Allocated memory was 200.3 MB in the beginning and 308.8 MB in the end (delta: 108.5 MB). Free memory was 165.4 MB in the beginning and 89.1 MB in the end (delta: 76.3 MB). Peak memory consumption was 184.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:16:48,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.01 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 91.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.69 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.66 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10657.81 ms. Allocated memory was 200.3 MB in the beginning and 308.8 MB in the end (delta: 108.5 MB). Free memory was 165.4 MB in the beginning and 89.1 MB in the end (delta: 76.3 MB). Peak memory consumption was 184.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.3s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 216 SDslu, 1337 SDs, 0 SdLazy, 587 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 29 HoareAnnotationTreeSize, 17 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 189 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 46541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 53/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...