/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/id_i10_o10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:37:10,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:37:10,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:37:10,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:37:10,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:37:10,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:37:10,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:37:10,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:37:10,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:37:10,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:37:10,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:37:10,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:37:10,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:37:10,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:37:10,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:37:10,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:37:10,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:37:10,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:37:10,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:37:10,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:37:10,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:37:10,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:37:10,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:37:10,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:37:10,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:37:10,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:37:10,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:37:10,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:37:10,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:37:10,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:37:10,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:37:10,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:37:10,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:37:10,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:37:10,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:37:10,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:37:10,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:37:10,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:37:10,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:37:10,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:37:10,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:37:10,383 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 06:37:10,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:37:10,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:37:10,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:37:10,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:37:10,435 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:37:10,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:37:10,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:37:10,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:37:10,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:37:10,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:37:10,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:37:10,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:37:10,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:37:10,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:37:10,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:37:10,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:37:10,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:37:10,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:37:10,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:37:10,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:37:10,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:37:10,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:37:10,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:37:10,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:37:10,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:37:10,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:37:10,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:37:10,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:37:10,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:37:10,441 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:37:10,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:37:10,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:37:10,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:37:10,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:37:10,910 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:37:10,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 06:37:11,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617c328dd/c300d91e40224a59a95351bc0dafca65/FLAGd945d9b66 [2020-09-25 06:37:11,556 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:37:11,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 06:37:11,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617c328dd/c300d91e40224a59a95351bc0dafca65/FLAGd945d9b66 [2020-09-25 06:37:11,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617c328dd/c300d91e40224a59a95351bc0dafca65 [2020-09-25 06:37:11,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:37:11,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:37:11,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:11,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:37:11,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:37:11,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:11" (1/1) ... [2020-09-25 06:37:11,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c28f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:11, skipping insertion in model container [2020-09-25 06:37:11,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:11" (1/1) ... [2020-09-25 06:37:11,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:37:11,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:37:12,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:12,161 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:37:12,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:12,198 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:37:12,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12 WrapperNode [2020-09-25 06:37:12,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:12,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:37:12,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:37:12,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:37:12,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (1/1) ... [2020-09-25 06:37:12,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:37:12,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:37:12,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:37:12,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:37:12,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (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 06:37:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:37:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:37:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 06:37:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:37:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:37:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:37:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 06:37:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:37:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:37:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:37:12,619 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:37:12,620 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:37:12,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:12 BoogieIcfgContainer [2020-09-25 06:37:12,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:37:12,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:37:12,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:37:12,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:37:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:37:11" (1/3) ... [2020-09-25 06:37:12,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c6d5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:12, skipping insertion in model container [2020-09-25 06:37:12,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:12" (2/3) ... [2020-09-25 06:37:12,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c6d5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:12, skipping insertion in model container [2020-09-25 06:37:12,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:12" (3/3) ... [2020-09-25 06:37:12,658 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 06:37:12,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:37:12,702 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:37:12,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:37:12,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:37:12,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:37:12,759 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:37:12,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:37:12,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:37:12,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:37:12,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:37:12,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:37:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 06:37:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:37:12,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:12,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:12,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 06:37:12,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:12,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468974002] [2020-09-25 06:37:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:37:13,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 06:37:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:37:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:37:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:37:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:13,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:13,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:13,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:13,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:37:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:13,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:13,290 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 06:37:13,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468974002] [2020-09-25 06:37:13,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:37:13,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:37:13,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237453488] [2020-09-25 06:37:13,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:37:13,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:37:13,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:37:13,324 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 06:37:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:13,425 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 06:37:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:37:13,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:37:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:13,441 INFO L225 Difference]: With dead ends: 37 [2020-09-25 06:37:13,441 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 06:37:13,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 06:37:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 06:37:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 06:37:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 06:37:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 06:37:13,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 06:37:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:13,499 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 06:37:13,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:37:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 06:37:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:37:13,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:13,502 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] [2020-09-25 06:37:13,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:37:13,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 06:37:13,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:13,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969931608] [2020-09-25 06:37:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:13,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:37:13,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 06:37:13,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:13,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:37:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:37:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:14,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:14,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:14,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:14,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:14,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:14,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:14,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:14,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:14,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:37:14,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:14,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:37:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:14,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:37:14,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969931608] [2020-09-25 06:37:14,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:14,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:37:14,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328024836] [2020-09-25 06:37:14,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:37:14,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:37:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:37:14,159 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 06:37:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:14,233 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 06:37:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:37:14,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 06:37:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:14,236 INFO L225 Difference]: With dead ends: 34 [2020-09-25 06:37:14,236 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 06:37:14,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 06:37:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 06:37:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:37:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 06:37:14,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 06:37:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:14,246 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 06:37:14,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:37:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 06:37:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 06:37:14,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:14,248 INFO L422 BasicCegarLoop]: trace histogram [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 06:37:14,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:37:14,249 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 06:37:14,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:14,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3433091] [2020-09-25 06:37:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:14,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:37:14,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-09-25 06:37:14,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:14,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:37:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:37:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:14,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:14,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:14,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:14,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:14,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:15,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:15,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:15,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 06:37:15,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:15,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:15,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:37:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:15,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:15,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:15,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:15,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:37:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:15,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:37:15,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3433091] [2020-09-25 06:37:15,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:15,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:15,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640259837] [2020-09-25 06:37:15,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:15,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:15,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:15,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:15,168 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 06:37:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:15,251 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 06:37:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:37:15,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 06:37:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:15,253 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:37:15,253 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 06:37:15,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:37:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 06:37:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 06:37:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 06:37:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 06:37:15,262 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 06:37:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:15,263 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 06:37:15,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 06:37:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 06:37:15,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:15,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:15,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:37:15,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 06:37:15,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:15,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901296476] [2020-09-25 06:37:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:37:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 06:37:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 06:37:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:37:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:16,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 06:37:16,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:16,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:16,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:37:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:16,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:37:16,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:37:16,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 06:37:16,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901296476] [2020-09-25 06:37:16,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:16,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:37:16,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238347448] [2020-09-25 06:37:16,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:37:16,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:37:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:16,520 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 06:37:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:16,630 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 06:37:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:37:16,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 06:37:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:16,632 INFO L225 Difference]: With dead ends: 44 [2020-09-25 06:37:16,632 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 06:37:16,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:37:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 06:37:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 06:37:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 06:37:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 06:37:16,641 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 06:37:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:16,641 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 06:37:16,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:37:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 06:37:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 06:37:16,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:16,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:16,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:37:16,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 06:37:16,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:16,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125799585] [2020-09-25 06:37:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 06:37:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-09-25 06:37:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:37:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 06:37:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:37:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:18,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 06:37:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:37:18,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:18,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:37:18,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:18,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:37:18,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:18,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:37:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:18,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 06:37:18,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125799585] [2020-09-25 06:37:18,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:18,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:37:18,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343595125] [2020-09-25 06:37:18,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:37:18,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:18,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:37:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:18,808 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 06:37:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:18,945 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 06:37:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:37:18,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 06:37:18,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:18,948 INFO L225 Difference]: With dead ends: 49 [2020-09-25 06:37:18,948 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 06:37:18,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:37:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 06:37:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 06:37:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 06:37:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 06:37:18,969 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 06:37:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:18,970 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 06:37:18,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:37:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 06:37:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:37:18,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:18,975 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:18,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:37:18,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 06:37:18,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:18,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495661061] [2020-09-25 06:37:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:37:21,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:21,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:37:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:37:21,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 06:37:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:37:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:21,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:37:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:37:21,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:21,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 06:37:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:22,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:22,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:22,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:37:22,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:22,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:22,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:22,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:37:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:22,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 06:37:22,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495661061] [2020-09-25 06:37:22,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:22,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:37:22,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52016915] [2020-09-25 06:37:22,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:37:22,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:37:22,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:37:22,145 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 06:37:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:22,343 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 06:37:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 06:37:22,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 06:37:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:22,346 INFO L225 Difference]: With dead ends: 54 [2020-09-25 06:37:22,346 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 06:37:22,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:37:22,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 06:37:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 06:37:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 06:37:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 06:37:22,361 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 06:37:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:22,361 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 06:37:22,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:37:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 06:37:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 06:37:22,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:22,365 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:22,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:37:22,366 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:22,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 06:37:22,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:22,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675453625] [2020-09-25 06:37:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:25,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:37:25,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2792 [2020-09-25 06:37:25,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:25,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:37:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 06:37:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:37:25,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:25,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:25,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:25,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:25,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 06:37:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:37:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:37:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:25,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:37:25,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 06:37:25,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:25,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:37:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:25,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:25,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 06:37:25,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:25,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:26,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:37:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:26,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:26,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:37:26,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:26,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:26,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:26,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:26,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:37:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:26,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:26,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:37:26,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:26,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 06:37:26,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675453625] [2020-09-25 06:37:26,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:26,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 06:37:26,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408588847] [2020-09-25 06:37:26,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 06:37:26,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:26,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 06:37:26,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:37:26,467 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 06:37:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:26,647 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 06:37:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 06:37:26,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 06:37:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:26,650 INFO L225 Difference]: With dead ends: 59 [2020-09-25 06:37:26,652 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 06:37:26,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:37:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 06:37:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 06:37:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 06:37:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 06:37:26,665 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 06:37:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:26,666 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 06:37:26,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 06:37:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 06:37:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 06:37:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:26,667 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:26,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:37:26,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 06:37:26,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:26,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38148217] [2020-09-25 06:37:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:30,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:30,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 06:37:30,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3803 [2020-09-25 06:37:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:30,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:37:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:37:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:37:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:30,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:30,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:30,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:30,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:30,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:37:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 06:37:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:30,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:37:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:37:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:31,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 06:37:31,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:37:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:37:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:37:31,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 06:37:31,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:37:31,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 06:37:31,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:31,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:37:31,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:37:31,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:37:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:31,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:31,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:37:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:31,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 06:37:31,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38148217] [2020-09-25 06:37:31,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:31,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 06:37:31,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333244858] [2020-09-25 06:37:31,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 06:37:31,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:31,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 06:37:31,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:37:31,970 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 06:37:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:32,145 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 06:37:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 06:37:32,146 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 06:37:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:32,150 INFO L225 Difference]: With dead ends: 64 [2020-09-25 06:37:32,150 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 06:37:32,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:37:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 06:37:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 06:37:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:37:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 06:37:32,163 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 06:37:32,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:32,164 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 06:37:32,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 06:37:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 06:37:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 06:37:32,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:32,166 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:32,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:37:32,166 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:32,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:32,167 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 06:37:32,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:32,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984084136] [2020-09-25 06:37:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:36,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:36,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 06:37:36,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4635 [2020-09-25 06:37:36,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:36,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:37:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 06:37:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:37:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:36,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:36,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:36,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:37:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:37:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 06:37:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:37:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:37:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:37,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 06:37:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:37,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:37:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:37:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:37:38,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 06:37:38,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:37:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:38,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:37:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:38,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:38,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:37:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:38,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:37:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:38,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 06:37:38,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984084136] [2020-09-25 06:37:38,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:38,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 06:37:38,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046572318] [2020-09-25 06:37:38,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 06:37:38,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:38,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 06:37:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:37:38,615 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 06:37:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:38,787 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 06:37:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 06:37:38,788 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 06:37:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:38,789 INFO L225 Difference]: With dead ends: 69 [2020-09-25 06:37:38,790 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:37:38,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 06:37:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:37:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 06:37:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 06:37:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 06:37:38,797 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 06:37:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:38,798 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 06:37:38,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 06:37:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 06:37:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 06:37:38,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:38,799 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:38,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:37:38,800 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 06:37:38,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:38,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104304488] [2020-09-25 06:37:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:43,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:43,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:37:43,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:37:43,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:43,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:37:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 06:37:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:37:43,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:43,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:43,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:43,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:43,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:43,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:44,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:37:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 06:37:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:37:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:37:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:44,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:37:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:37:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:37:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 06:37:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:37:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:37:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:45,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 06:37:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:37:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:37:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:45,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:37:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:37:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:37:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:37:45,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:37:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:45,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:37:45,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:37:45,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:45,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:37:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:37:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:37:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:46,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:37:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:37:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 06:37:46,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104304488] [2020-09-25 06:37:46,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:46,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 06:37:46,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750683896] [2020-09-25 06:37:46,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 06:37:46,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 06:37:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:37:46,131 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 06:37:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:46,360 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 06:37:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 06:37:46,360 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 06:37:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:46,362 INFO L225 Difference]: With dead ends: 74 [2020-09-25 06:37:46,362 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 06:37:46,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 06:37:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 06:37:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 06:37:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:37:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 06:37:46,371 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 06:37:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:46,371 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 06:37:46,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 06:37:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 06:37:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 06:37:46,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:46,373 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:46,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:37:46,373 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 06:37:46,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:46,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853915880] [2020-09-25 06:37:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:37:46,388 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:37:46,388 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:37:46,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:37:46,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:37:46 BoogieIcfgContainer [2020-09-25 06:37:46,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:37:46,422 INFO L168 Benchmark]: Toolchain (without parser) took 34503.42 ms. Allocated memory was 145.8 MB in the beginning and 412.6 MB in the end (delta: 266.9 MB). Free memory was 102.2 MB in the beginning and 295.1 MB in the end (delta: -192.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,423 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.67 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 92.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,425 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 145.8 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,426 INFO L168 Benchmark]: RCFGBuilder took 395.96 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 169.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,426 INFO L168 Benchmark]: TraceAbstraction took 33788.03 ms. Allocated memory was 202.4 MB in the beginning and 412.6 MB in the end (delta: 210.2 MB). Free memory was 169.6 MB in the beginning and 295.1 MB in the end (delta: -125.5 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:37:46,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.67 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 92.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 145.8 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.96 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 169.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33788.03 ms. Allocated memory was 202.4 MB in the beginning and 412.6 MB in the end (delta: 210.2 MB). Free memory was 169.6 MB in the beginning and 295.1 MB in the end (delta: -125.5 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 93 SDslu, 1099 SDs, 0 SdLazy, 449 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 68829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1140 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 incorrect! Received shutdown request...