/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:12:24,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:12:24,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:12:24,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:12:24,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:12:24,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:12:24,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:12:24,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:12:24,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:12:24,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:12:24,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:12:24,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:12:24,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:12:24,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:12:24,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:12:24,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:12:24,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:12:24,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:12:24,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:12:24,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:12:24,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:12:24,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:12:24,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:12:24,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:12:24,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:12:24,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:12:24,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:12:24,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:12:24,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:12:24,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:12:24,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:12:24,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:12:24,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:12:24,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:12:24,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:12:24,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:12:24,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:12:24,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:12:24,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:12:24,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:12:24,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:12:24,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:12:24,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:12:24,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:12:24,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:12:24,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:12:24,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:12:24,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:12:24,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:12:24,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:12:24,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:12:24,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:12:24,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:12:24,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:12:24,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:12:24,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:12:24,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:12:24,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:12:24,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:12:24,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:12:24,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:12:24,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:12:24,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:12:24,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:24,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:12:24,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:12:24,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:12:24,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:12:24,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:12:24,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:12:24,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:12:24,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:12:24,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:12:24,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:12:24,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:12:24,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:12:24,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:12:24,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-28 17:12:24,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde2d503a/29bb8406a2f24265865e777ad5ae0ed6/FLAG32c32b1e7 [2020-10-28 17:12:25,497 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:12:25,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-28 17:12:25,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde2d503a/29bb8406a2f24265865e777ad5ae0ed6/FLAG32c32b1e7 [2020-10-28 17:12:25,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde2d503a/29bb8406a2f24265865e777ad5ae0ed6 [2020-10-28 17:12:25,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:12:25,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:12:25,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:25,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:12:25,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:12:25,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:25" (1/1) ... [2020-10-28 17:12:25,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3811d8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:25, skipping insertion in model container [2020-10-28 17:12:25,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:25" (1/1) ... [2020-10-28 17:12:25,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:12:25,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:12:26,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:26,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:12:26,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:26,106 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:12:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26 WrapperNode [2020-10-28 17:12:26,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:26,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:12:26,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:12:26,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:12:26,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... [2020-10-28 17:12:26,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:12:26,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:12:26,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:12:26,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:12:26,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:26,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:12:26,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:12:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:12:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-10-28 17:12:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:12:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:12:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:12:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:12:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:12:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:12:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:12:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:12:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:12:26,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:12:26,475 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:12:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:26 BoogieIcfgContainer [2020-10-28 17:12:26,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:12:26,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:12:26,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:12:26,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:12:26,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:12:25" (1/3) ... [2020-10-28 17:12:26,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445b664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:26, skipping insertion in model container [2020-10-28 17:12:26,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:26" (2/3) ... [2020-10-28 17:12:26,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445b664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:26, skipping insertion in model container [2020-10-28 17:12:26,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:26" (3/3) ... [2020-10-28 17:12:26,503 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-10-28 17:12:26,541 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:12:26,553 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:12:26,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:12:26,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:12:26,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:12:26,657 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:12:26,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:12:26,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:12:26,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:12:26,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:12:26,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:12:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-28 17:12:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 17:12:26,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:26,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:26,715 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:26,729 INFO L82 PathProgramCache]: Analyzing trace with hash 192942640, now seen corresponding path program 1 times [2020-10-28 17:12:26,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:26,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478991087] [2020-10-28 17:12:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:12:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-28 17:12:27,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:27,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:12:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:12:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:12:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:27,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:27,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:12:27,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:27,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:27,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:27,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:27,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:12:27,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:27,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:12:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:27,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478991087] [2020-10-28 17:12:27,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:27,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:12:27,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170667025] [2020-10-28 17:12:27,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:12:27,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:27,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:12:27,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:12:27,629 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2020-10-28 17:12:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:28,034 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-28 17:12:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:12:28,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-28 17:12:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:28,047 INFO L225 Difference]: With dead ends: 45 [2020-10-28 17:12:28,047 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 17:12:28,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:12:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 17:12:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 17:12:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 17:12:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-28 17:12:28,102 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2020-10-28 17:12:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:28,103 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-28 17:12:28,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:12:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-28 17:12:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 17:12:28,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:28,106 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] [2020-10-28 17:12:28,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:12:28,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1691639833, now seen corresponding path program 1 times [2020-10-28 17:12:28,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:28,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275512038] [2020-10-28 17:12:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:28,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:12:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 17:12:28,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:28,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:12:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:12:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:12:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:12:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:28,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:28,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:12:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:12:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:28,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:28,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:12:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:28,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:12:28,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275512038] [2020-10-28 17:12:28,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:28,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:12:28,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762538024] [2020-10-28 17:12:28,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:12:28,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:12:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:12:28,536 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 9 states. [2020-10-28 17:12:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:28,941 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-28 17:12:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:12:28,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-28 17:12:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:28,944 INFO L225 Difference]: With dead ends: 35 [2020-10-28 17:12:28,944 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:12:28,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:12:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:12:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-28 17:12:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 17:12:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-28 17:12:28,956 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2020-10-28 17:12:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:28,956 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-28 17:12:28,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:12:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-28 17:12:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 17:12:28,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:28,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:28,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:12:28,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:28,960 INFO L82 PathProgramCache]: Analyzing trace with hash -118590102, now seen corresponding path program 1 times [2020-10-28 17:12:28,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:28,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743821559] [2020-10-28 17:12:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:12:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-28 17:12:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:12:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:12:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:29,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:29,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:12:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:29,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:12:29,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:12:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:12:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:29,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:29,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:29,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:12:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:12:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:12:29,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743821559] [2020-10-28 17:12:29,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:29,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:12:29,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010739823] [2020-10-28 17:12:29,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:12:29,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:29,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:12:29,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:12:29,459 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2020-10-28 17:12:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:29,674 INFO L93 Difference]: Finished difference Result 54 states and 79 transitions. [2020-10-28 17:12:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:12:29,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-28 17:12:29,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:29,677 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:12:29,677 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 17:12:29,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:12:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 17:12:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 17:12:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 17:12:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-28 17:12:29,694 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 30 [2020-10-28 17:12:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:29,696 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-28 17:12:29,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:12:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2020-10-28 17:12:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 17:12:29,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:29,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:29,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:12:29,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash 936683835, now seen corresponding path program 1 times [2020-10-28 17:12:29,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:29,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606917255] [2020-10-28 17:12:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:12:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:12:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:12:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:30,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:30,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:30,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:30,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:30,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:12:30,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 17:12:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:30,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:12:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:12:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:30,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:30,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:30,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:12:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:30,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:12:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:30,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:30,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:12:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:30,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:12:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:30,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:12:30,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606917255] [2020-10-28 17:12:30,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:30,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:12:30,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087104960] [2020-10-28 17:12:30,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:12:30,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:30,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:12:30,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:12:30,340 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand 12 states. [2020-10-28 17:12:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:31,201 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-10-28 17:12:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:12:31,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-28 17:12:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:31,207 INFO L225 Difference]: With dead ends: 57 [2020-10-28 17:12:31,207 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 17:12:31,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:12:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 17:12:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-28 17:12:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 17:12:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2020-10-28 17:12:31,227 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 37 [2020-10-28 17:12:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:31,228 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2020-10-28 17:12:31,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:12:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2020-10-28 17:12:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 17:12:31,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:31,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:31,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:12:31,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 653664217, now seen corresponding path program 2 times [2020-10-28 17:12:31,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:31,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516524018] [2020-10-28 17:12:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:32,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:12:32,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:12:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-28 17:12:32,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:32,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:12:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:12:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 17:12:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:32,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:12:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:12:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:12:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:33,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:33,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:12:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:12:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:12:33,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516524018] [2020-10-28 17:12:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:12:33,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257194991] [2020-10-28 17:12:33,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:12:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:33,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:12:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:12:33,036 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand 6 states. [2020-10-28 17:12:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:33,296 INFO L93 Difference]: Finished difference Result 75 states and 142 transitions. [2020-10-28 17:12:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:12:33,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-28 17:12:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:33,301 INFO L225 Difference]: With dead ends: 75 [2020-10-28 17:12:33,301 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:12:33,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:12:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:12:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 17:12:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:12:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 55 transitions. [2020-10-28 17:12:33,326 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 55 transitions. Word has length 37 [2020-10-28 17:12:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:33,326 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 55 transitions. [2020-10-28 17:12:33,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:12:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 55 transitions. [2020-10-28 17:12:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 17:12:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:33,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:33,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:12:33,329 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:33,334 INFO L82 PathProgramCache]: Analyzing trace with hash -561126020, now seen corresponding path program 3 times [2020-10-28 17:12:33,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:33,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092585087] [2020-10-28 17:12:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:33,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:33,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:12:33,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 17:12:33,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:33,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:12:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:12:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:12:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:33,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:33,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:33,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:33,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:33,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:33,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:33,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:12:33,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 17:12:33,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:33,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:12:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:12:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:34,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:12:34,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:12:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:12:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:34,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:34,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:34,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:34,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:34,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:12:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 17:12:34,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092585087] [2020-10-28 17:12:34,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:34,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:12:34,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243569214] [2020-10-28 17:12:34,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:12:34,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:12:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:12:34,225 INFO L87 Difference]: Start difference. First operand 38 states and 55 transitions. Second operand 14 states. [2020-10-28 17:12:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:35,089 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions. [2020-10-28 17:12:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:12:35,090 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-28 17:12:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:35,093 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:12:35,093 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 17:12:35,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:12:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 17:12:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2020-10-28 17:12:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 17:12:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2020-10-28 17:12:35,110 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 44 [2020-10-28 17:12:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:35,110 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2020-10-28 17:12:35,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:12:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2020-10-28 17:12:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 17:12:35,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:35,112 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:35,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:12:35,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:35,113 INFO L82 PathProgramCache]: Analyzing trace with hash 605433576, now seen corresponding path program 4 times [2020-10-28 17:12:35,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:35,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217798836] [2020-10-28 17:12:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2935 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:12:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:12:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:38,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:38,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:12:38,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:12:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:12:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:12:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:12:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:12:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:38,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:12:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:38,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:38,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:38,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:38,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:12:38,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217798836] [2020-10-28 17:12:38,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:38,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:12:38,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935966978] [2020-10-28 17:12:38,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:12:38,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:12:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:12:38,790 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand 10 states. [2020-10-28 17:12:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:39,195 INFO L93 Difference]: Finished difference Result 78 states and 131 transitions. [2020-10-28 17:12:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:12:39,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-28 17:12:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:39,201 INFO L225 Difference]: With dead ends: 78 [2020-10-28 17:12:39,201 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 17:12:39,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:12:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 17:12:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 17:12:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:12:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 76 transitions. [2020-10-28 17:12:39,225 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 76 transitions. Word has length 44 [2020-10-28 17:12:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:39,225 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 76 transitions. [2020-10-28 17:12:39,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:12:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 76 transitions. [2020-10-28 17:12:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:12:39,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:39,228 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:39,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:12:39,228 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:39,228 INFO L82 PathProgramCache]: Analyzing trace with hash -604075434, now seen corresponding path program 5 times [2020-10-28 17:12:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:39,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455881877] [2020-10-28 17:12:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:44,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 17:12:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:12:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:44,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:12:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:12:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:12:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:12:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:12:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:12:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:12:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:12:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:12:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:46,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 17:12:46,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455881877] [2020-10-28 17:12:46,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:46,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:12:46,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166766733] [2020-10-28 17:12:46,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:12:46,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:12:46,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:46,549 INFO L87 Difference]: Start difference. First operand 51 states and 76 transitions. Second operand 5 states. [2020-10-28 17:12:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:46,700 INFO L93 Difference]: Finished difference Result 94 states and 168 transitions. [2020-10-28 17:12:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:12:46,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-28 17:12:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:46,702 INFO L225 Difference]: With dead ends: 94 [2020-10-28 17:12:46,702 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 17:12:46,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:12:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 17:12:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 17:12:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 17:12:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-28 17:12:46,716 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 58 [2020-10-28 17:12:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:46,716 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-28 17:12:46,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:12:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-28 17:12:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:12:46,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:46,717 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:46,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:12:46,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:46,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:46,718 INFO L82 PathProgramCache]: Analyzing trace with hash -239584131, now seen corresponding path program 6 times [2020-10-28 17:12:46,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:46,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477517345] [2020-10-28 17:12:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:49,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:12:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:49,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:49,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:49,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:49,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 17:12:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:12:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:12:50,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:12:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:12:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:12:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:12:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 17:12:50,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477517345] [2020-10-28 17:12:50,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:50,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:12:50,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230663116] [2020-10-28 17:12:50,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:12:50,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:12:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:12:50,450 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 10 states. [2020-10-28 17:12:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:50,942 INFO L93 Difference]: Finished difference Result 63 states and 95 transitions. [2020-10-28 17:12:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:12:50,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-28 17:12:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:50,945 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:12:50,945 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:12:50,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:12:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:12:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-28 17:12:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 17:12:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 89 transitions. [2020-10-28 17:12:50,976 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 89 transitions. Word has length 64 [2020-10-28 17:12:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:50,977 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 89 transitions. [2020-10-28 17:12:50,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:12:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 89 transitions. [2020-10-28 17:12:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 17:12:50,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:50,979 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:50,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:12:50,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:50,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505957, now seen corresponding path program 7 times [2020-10-28 17:12:50,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:50,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815670200] [2020-10-28 17:12:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:12:56,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 17:12:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:56,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:01,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:13:01,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:13:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:13:01,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:01,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:13:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:13:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 17:13:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 17:13:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:13:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:13:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:06,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:06,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:13:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:13:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:13:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:13:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:13:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:13:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:13:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:13:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:13:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:13:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:06,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:06,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:13:06,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:06,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:13:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:13:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:13:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:13:06,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815670200] [2020-10-28 17:13:06,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:13:06,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:13:06,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966779158] [2020-10-28 17:13:06,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:13:06,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:06,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:13:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:13:06,351 INFO L87 Difference]: Start difference. First operand 58 states and 89 transitions. Second operand 10 states. [2020-10-28 17:13:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:06,804 INFO L93 Difference]: Finished difference Result 96 states and 201 transitions. [2020-10-28 17:13:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:13:06,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-28 17:13:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:06,808 INFO L225 Difference]: With dead ends: 96 [2020-10-28 17:13:06,808 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:13:06,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:13:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:13:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:13:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:13:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:13:06,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-10-28 17:13:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:06,811 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:13:06,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:13:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:13:06,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:13:06,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:13:06,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:13:07,258 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 16 [2020-10-28 17:13:07,371 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 17:13:07,371 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 17:13:07,371 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 17:13:07,371 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 17:13:07,371 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:13:07,372 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 48) the Hoare annotation is: true [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 48) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 48) no Hoare annotation was computed. [2020-10-28 17:13:07,372 INFO L274 CegarLoopResult]: For program point L43(lines 43 47) no Hoare annotation was computed. [2020-10-28 17:13:07,373 INFO L277 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-10-28 17:13:07,373 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-28 17:13:07,373 INFO L274 CegarLoopResult]: For program point L36(lines 36 41) no Hoare annotation was computed. [2020-10-28 17:13:07,373 INFO L274 CegarLoopResult]: For program point ackermannEXIT(lines 17 25) no Hoare annotation was computed. [2020-10-28 17:13:07,374 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-28 17:13:07,374 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-10-28 17:13:07,374 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-28 17:13:07,374 INFO L270 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (let ((.cse0 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (<= 1 |ackermann_#in~m|)) (.cse2 (= ackermann_~m |ackermann_#in~m|))) (or (and (not (= |ackermann_#in~m| 1)) .cse0 .cse1 .cse2) (and (<= 2 |ackermann_#t~ret8|) .cse0 .cse1 .cse2))) [2020-10-28 17:13:07,374 INFO L277 CegarLoopResult]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2020-10-28 17:13:07,374 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-28 17:13:07,376 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-28 17:13:07,376 INFO L274 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-10-28 17:13:07,376 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 17:13:07,376 INFO L274 CegarLoopResult]: For program point ackermannFINAL(lines 17 25) no Hoare annotation was computed. [2020-10-28 17:13:07,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:13:07 BoogieIcfgContainer [2020-10-28 17:13:07,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:13:07,385 INFO L168 Benchmark]: Toolchain (without parser) took 41523.91 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 126.4 MB in the beginning and 516.0 MB in the end (delta: -389.6 MB). Peak memory consumption was 113.2 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:07,385 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:13:07,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:07,390 INFO L168 Benchmark]: Boogie Preprocessor took 35.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:07,392 INFO L168 Benchmark]: RCFGBuilder took 335.74 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 100.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:07,394 INFO L168 Benchmark]: TraceAbstraction took 40896.50 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 100.2 MB in the beginning and 516.0 MB in the end (delta: -415.8 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:07,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 335.74 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 100.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 40896.50 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 100.2 MB in the beginning and 516.0 MB in the end (delta: -415.8 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.1s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 338 SDslu, 319 SDs, 0 SdLazy, 1479 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=9, 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 144 PreInvPairs, 168 NumberOfFragments, 91 HoareAnnotationTreeSize, 144 FomulaSimplifications, 632 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 540 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 34.8s InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 49116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 516/607 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...