/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:27,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:27,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:27,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:27,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:27,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:27,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:27,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:27,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:27,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:27,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:27,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:27,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:27,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:27,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:27,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:27,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:27,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:27,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:27,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:27,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:27,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:27,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:27,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:27,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:27,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:27,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:27,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:27,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:27,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:27,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:27,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:27,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:27,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:27,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:27,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:27,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:27,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:27,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:27,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:27,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:27,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:46:27,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:27,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:27,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:27,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:27,418 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:27,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:27,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:27,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:27,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:27,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:27,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:27,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:27,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:27,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:27,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:27,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:27,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:27,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:27,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:27,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:27,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:27,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:27,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:27,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:27,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:27,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:27,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:27,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:27,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:27,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:46:27,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:27,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:27,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:27,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:27,937 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:27,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-24 21:46:28,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4541841d4/0368c8bb68324af0b8a41702b7ef132c/FLAG8e08eb11b [2020-09-24 21:46:28,631 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:28,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-24 21:46:28,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4541841d4/0368c8bb68324af0b8a41702b7ef132c/FLAG8e08eb11b [2020-09-24 21:46:28,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4541841d4/0368c8bb68324af0b8a41702b7ef132c [2020-09-24 21:46:28,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:28,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:28,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:28,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:28,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:28,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:28" (1/1) ... [2020-09-24 21:46:28,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3225ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:28, skipping insertion in model container [2020-09-24 21:46:28,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:28" (1/1) ... [2020-09-24 21:46:28,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:29,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:29,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:29,718 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:29,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:29,871 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:29,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29 WrapperNode [2020-09-24 21:46:29,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:29,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:29,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:29,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:29,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:29,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:29,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:29,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:29,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:30,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:30,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... [2020-09-24 21:46:30,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:30,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:30,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:30,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:30,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:31,875 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:31,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:31,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:31 BoogieIcfgContainer [2020-09-24 21:46:31,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:31,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:31,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:31,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:31,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:28" (1/3) ... [2020-09-24 21:46:31,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c291ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:31, skipping insertion in model container [2020-09-24 21:46:31,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:29" (2/3) ... [2020-09-24 21:46:31,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c291ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:31, skipping insertion in model container [2020-09-24 21:46:31,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:31" (3/3) ... [2020-09-24 21:46:31,895 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-24 21:46:31,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:31,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:31,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:31,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:31,977 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:31,978 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:31,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:31,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:31,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:31,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:31,978 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 21:46:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 21:46:32,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:32,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:32,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-24 21:46:32,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:32,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307487279] [2020-09-24 21:46:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:46:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 21:46:32,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:46:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:46:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:33,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:33,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:33,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:33,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307487279] [2020-09-24 21:46:33,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:33,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:46:33,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955689201] [2020-09-24 21:46:33,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:46:33,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:33,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:46:33,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:33,099 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 21:46:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:37,151 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-24 21:46:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:46:37,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-24 21:46:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:37,187 INFO L225 Difference]: With dead ends: 1991 [2020-09-24 21:46:37,187 INFO L226 Difference]: Without dead ends: 1250 [2020-09-24 21:46:37,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-24 21:46:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-24 21:46:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 21:46:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-24 21:46:37,337 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-24 21:46:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:37,338 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-24 21:46:37,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:46:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-24 21:46:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 21:46:37,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:37,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:37,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:37,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:37,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:37,351 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-24 21:46:37,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:37,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597217210] [2020-09-24 21:46:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 21:46:40,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3365 [2020-09-24 21:46:40,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-24 21:46:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:40,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:40,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:46:40,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:41,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:46:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 21:46:41,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 21:46:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:41,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597217210] [2020-09-24 21:46:41,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:41,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:41,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623747682] [2020-09-24 21:46:41,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:41,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:41,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:41,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:41,477 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 8 states. [2020-09-24 21:46:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:45,985 INFO L93 Difference]: Finished difference Result 1565 states and 2022 transitions. [2020-09-24 21:46:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:45,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-24 21:46:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:45,997 INFO L225 Difference]: With dead ends: 1565 [2020-09-24 21:46:45,997 INFO L226 Difference]: Without dead ends: 1563 [2020-09-24 21:46:45,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-09-24 21:46:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1192. [2020-09-24 21:46:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-24 21:46:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1554 transitions. [2020-09-24 21:46:46,059 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1554 transitions. Word has length 160 [2020-09-24 21:46:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:46,063 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1554 transitions. [2020-09-24 21:46:46,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1554 transitions. [2020-09-24 21:46:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 21:46:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:46,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:46,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:46,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2120468014, now seen corresponding path program 1 times [2020-09-24 21:46:46,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:46,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688722054] [2020-09-24 21:46:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 21:46:50,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:46:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3980 [2020-09-24 21:46:50,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 21:46:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:46:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:50,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:46:50,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 21:46:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:46:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:50,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688722054] [2020-09-24 21:46:50,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:50,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:50,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095426669] [2020-09-24 21:46:50,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:50,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:50,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:50,480 INFO L87 Difference]: Start difference. First operand 1192 states and 1554 transitions. Second operand 7 states. [2020-09-24 21:46:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:53,699 INFO L93 Difference]: Finished difference Result 3030 states and 4085 transitions. [2020-09-24 21:46:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:46:53,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 21:46:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:53,712 INFO L225 Difference]: With dead ends: 3030 [2020-09-24 21:46:53,712 INFO L226 Difference]: Without dead ends: 1853 [2020-09-24 21:46:53,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-24 21:46:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1779. [2020-09-24 21:46:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-24 21:46:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-24 21:46:53,780 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 181 [2020-09-24 21:46:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:53,782 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-24 21:46:53,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-24 21:46:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-24 21:46:53,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:53,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:53,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:53,791 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:53,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1634682488, now seen corresponding path program 1 times [2020-09-24 21:46:53,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:53,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196367474] [2020-09-24 21:46:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:58,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-09-24 21:46:58,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 21:46:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 21:46:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:46:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:59,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 21:46:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:46:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 21:46:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 21:46:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 21:46:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:46:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 21:46:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:46:59,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 114 proven. 67 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:46:59,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196367474] [2020-09-24 21:46:59,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:59,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:46:59,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198703877] [2020-09-24 21:46:59,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:59,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:59,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:59,474 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 7 states. [2020-09-24 21:47:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:02,693 INFO L93 Difference]: Finished difference Result 4189 states and 5327 transitions. [2020-09-24 21:47:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:47:02,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-09-24 21:47:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:02,711 INFO L225 Difference]: With dead ends: 4189 [2020-09-24 21:47:02,712 INFO L226 Difference]: Without dead ends: 2425 [2020-09-24 21:47:02,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:47:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-09-24 21:47:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2392. [2020-09-24 21:47:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2392 states. [2020-09-24 21:47:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 2941 transitions. [2020-09-24 21:47:02,785 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 2941 transitions. Word has length 331 [2020-09-24 21:47:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:02,786 INFO L479 AbstractCegarLoop]: Abstraction has 2392 states and 2941 transitions. [2020-09-24 21:47:02,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:47:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 2941 transitions. [2020-09-24 21:47:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-24 21:47:02,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:02,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:47:02,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:02,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 773936776, now seen corresponding path program 1 times [2020-09-24 21:47:02,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:02,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501997712] [2020-09-24 21:47:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-09-24 21:47:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:47:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:47:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:47:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:47:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:08,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:08,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:47:08,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:08,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:08,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:47:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 21:47:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:47:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 21:47:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 21:47:09,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-09-24 21:47:09,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-24 21:47:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 150 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:47:10,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501997712] [2020-09-24 21:47:10,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:10,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:47:10,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890443994] [2020-09-24 21:47:10,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:47:10,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:10,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:47:10,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:47:10,610 INFO L87 Difference]: Start difference. First operand 2392 states and 2941 transitions. Second operand 11 states. [2020-09-24 21:47:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:17,209 INFO L93 Difference]: Finished difference Result 5345 states and 6736 transitions. [2020-09-24 21:47:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:47:17,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 342 [2020-09-24 21:47:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:17,224 INFO L225 Difference]: With dead ends: 5345 [2020-09-24 21:47:17,225 INFO L226 Difference]: Without dead ends: 3019 [2020-09-24 21:47:17,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:47:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-09-24 21:47:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 2959. [2020-09-24 21:47:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2959 states. [2020-09-24 21:47:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3524 transitions. [2020-09-24 21:47:17,318 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3524 transitions. Word has length 342 [2020-09-24 21:47:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:17,319 INFO L479 AbstractCegarLoop]: Abstraction has 2959 states and 3524 transitions. [2020-09-24 21:47:17,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:47:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3524 transitions. [2020-09-24 21:47:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-09-24 21:47:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:17,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:47:17,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:47:17,333 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash 76600556, now seen corresponding path program 1 times [2020-09-24 21:47:17,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:17,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50834171] [2020-09-24 21:47:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat