/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:29:04,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:29:04,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:29:04,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:29:04,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:29:04,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:29:04,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:29:04,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:29:04,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:29:04,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:29:04,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:29:04,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:29:04,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:29:04,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:29:04,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:29:04,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:29:04,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:29:04,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:29:04,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:29:04,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:29:04,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:29:04,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:29:04,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:29:04,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:29:04,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:29:04,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:29:04,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:29:04,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:29:04,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:29:04,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:29:04,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:29:04,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:29:04,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:29:04,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:29:04,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:29:04,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:29:04,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:29:04,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:29:04,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:29:04,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:29:04,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:29:04,856 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 [2020-09-21 12:29:04,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:29:04,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:29:04,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:29:04,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:29:04,888 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:29:04,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:29:04,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:29:04,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:29:04,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:29:04,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:29:04,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:29:04,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:29:04,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:29:04,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:29:04,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:29:04,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:29:04,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:29:04,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:29:04,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:29:04,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:29:04,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:29:04,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:29:04,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:29:04,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:29:04,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:29:04,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:29:04,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:29:04,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:29:04,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:29:04,893 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:29:05,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:29:05,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:29:05,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:29:05,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:29:05,387 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:29:05,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-21 12:29:05,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf946caea/3bc68c911ea547579a4e7eb487a6be89/FLAG4f8a774e5 [2020-09-21 12:29:06,200 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:29:06,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-21 12:29:06,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf946caea/3bc68c911ea547579a4e7eb487a6be89/FLAG4f8a774e5 [2020-09-21 12:29:06,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf946caea/3bc68c911ea547579a4e7eb487a6be89 [2020-09-21 12:29:06,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:29:06,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:29:06,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:29:06,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:29:06,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:29:06,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:29:06" (1/1) ... [2020-09-21 12:29:06,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677bd6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:06, skipping insertion in model container [2020-09-21 12:29:06,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:29:06" (1/1) ... [2020-09-21 12:29:06,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:29:06,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:29:06,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:29:07,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:29:07,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:29:07,322 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:29:07,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07 WrapperNode [2020-09-21 12:29:07,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:29:07,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:29:07,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:29:07,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:29:07,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (1/1) ... [2020-09-21 12:29:07,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:29:07,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:29:07,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:29:07,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:29:07,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (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 [2020-09-21 12:29:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:29:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:29:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:29:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:29:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:29:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:29:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:29:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:29:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:29:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:29:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:29:08,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:29:08,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:29:08,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:29:08 BoogieIcfgContainer [2020-09-21 12:29:08,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:29:08,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:29:08,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:29:08,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:29:08,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:29:06" (1/3) ... [2020-09-21 12:29:08,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b137ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:29:08, skipping insertion in model container [2020-09-21 12:29:08,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:07" (2/3) ... [2020-09-21 12:29:08,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b137ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:29:08, skipping insertion in model container [2020-09-21 12:29:08,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:29:08" (3/3) ... [2020-09-21 12:29:08,835 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-21 12:29:08,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:29:08,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:29:08,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:29:08,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:29:08,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:29:08,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:29:08,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:29:08,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:29:08,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:29:08,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:29:08,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:29:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-09-21 12:29:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-21 12:29:09,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:09,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:09,020 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:09,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2092008314, now seen corresponding path program 1 times [2020-09-21 12:29:09,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:09,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646395144] [2020-09-21 12:29:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:10,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:10,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-21 12:29:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-09-21 12:29:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:29:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:29:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:29:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:29:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:10,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:10,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:10,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:10,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646395144] [2020-09-21 12:29:10,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:29:10,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:29:10,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878513037] [2020-09-21 12:29:10,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:10,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:10,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:10,761 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 5 states. [2020-09-21 12:29:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:12,634 INFO L93 Difference]: Finished difference Result 627 states and 1073 transitions. [2020-09-21 12:29:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:12,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-21 12:29:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:12,659 INFO L225 Difference]: With dead ends: 627 [2020-09-21 12:29:12,659 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:12,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 480 transitions. [2020-09-21 12:29:12,764 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 480 transitions. Word has length 132 [2020-09-21 12:29:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:12,765 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 480 transitions. [2020-09-21 12:29:12,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 480 transitions. [2020-09-21 12:29:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-21 12:29:12,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:12,771 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-21 12:29:12,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:29:12,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:12,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash 719175851, now seen corresponding path program 1 times [2020-09-21 12:29:12,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:12,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285194934] [2020-09-21 12:29:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:13,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:29:13,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-21 12:29:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:29:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 12:29:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:14,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:14,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:14,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:14,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:29:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:14,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:14,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:29:14,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:29:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:14,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285194934] [2020-09-21 12:29:14,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:14,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:29:14,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107358592] [2020-09-21 12:29:14,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:29:14,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:14,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:29:14,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:14,498 INFO L87 Difference]: Start difference. First operand 319 states and 480 transitions. Second operand 6 states. [2020-09-21 12:29:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:15,846 INFO L93 Difference]: Finished difference Result 737 states and 1143 transitions. [2020-09-21 12:29:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:15,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-09-21 12:29:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:15,852 INFO L225 Difference]: With dead ends: 737 [2020-09-21 12:29:15,852 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:15,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 478 transitions. [2020-09-21 12:29:15,885 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 478 transitions. Word has length 147 [2020-09-21 12:29:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:15,885 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 478 transitions. [2020-09-21 12:29:15,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:29:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 478 transitions. [2020-09-21 12:29:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 12:29:15,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:15,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:29:15,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:29:15,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1033618530, now seen corresponding path program 1 times [2020-09-21 12:29:15,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:15,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033047483] [2020-09-21 12:29:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-21 12:29:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:29:16,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 12:29:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-21 12:29:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:29:17,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:29:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:29:17,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:17,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033047483] [2020-09-21 12:29:17,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:17,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:17,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911230803] [2020-09-21 12:29:17,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:17,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:17,517 INFO L87 Difference]: Start difference. First operand 319 states and 478 transitions. Second operand 5 states. [2020-09-21 12:29:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:18,924 INFO L93 Difference]: Finished difference Result 729 states and 1130 transitions. [2020-09-21 12:29:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:18,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-21 12:29:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:18,929 INFO L225 Difference]: With dead ends: 729 [2020-09-21 12:29:18,930 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:18,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 476 transitions. [2020-09-21 12:29:18,951 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 476 transitions. Word has length 154 [2020-09-21 12:29:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:18,951 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 476 transitions. [2020-09-21 12:29:18,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 476 transitions. [2020-09-21 12:29:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-21 12:29:18,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:18,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:18,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:29:18,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash 124353046, now seen corresponding path program 1 times [2020-09-21 12:29:18,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:18,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360881306] [2020-09-21 12:29:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:19,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:20,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:20,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 12:29:20,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-21 12:29:20,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-21 12:29:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 12:29:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:20,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:20,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:20,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:20,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:29:20,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:29:20,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:29:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:20,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360881306] [2020-09-21 12:29:20,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:20,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317653316] [2020-09-21 12:29:20,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:20,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:20,426 INFO L87 Difference]: Start difference. First operand 319 states and 476 transitions. Second operand 5 states. [2020-09-21 12:29:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:21,938 INFO L93 Difference]: Finished difference Result 726 states and 1122 transitions. [2020-09-21 12:29:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:21,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-21 12:29:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:21,943 INFO L225 Difference]: With dead ends: 726 [2020-09-21 12:29:21,943 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:21,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 468 transitions. [2020-09-21 12:29:21,965 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 468 transitions. Word has length 158 [2020-09-21 12:29:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:21,966 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 468 transitions. [2020-09-21 12:29:21,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 468 transitions. [2020-09-21 12:29:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-21 12:29:21,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:21,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:21,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:29:21,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 660846734, now seen corresponding path program 1 times [2020-09-21 12:29:21,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:21,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386729549] [2020-09-21 12:29:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:23,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-21 12:29:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-21 12:29:23,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-21 12:29:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-21 12:29:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:23,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:23,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:23,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:29:23,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:23,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:23,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:29:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:29:23,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:29:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:23,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386729549] [2020-09-21 12:29:23,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:23,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:23,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621168643] [2020-09-21 12:29:23,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:23,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:23,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:23,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:23,427 INFO L87 Difference]: Start difference. First operand 319 states and 468 transitions. Second operand 5 states. [2020-09-21 12:29:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:24,631 INFO L93 Difference]: Finished difference Result 728 states and 1104 transitions. [2020-09-21 12:29:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:24,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-21 12:29:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:24,634 INFO L225 Difference]: With dead ends: 728 [2020-09-21 12:29:24,635 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:24,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 464 transitions. [2020-09-21 12:29:24,657 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 464 transitions. Word has length 162 [2020-09-21 12:29:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:24,657 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 464 transitions. [2020-09-21 12:29:24,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 464 transitions. [2020-09-21 12:29:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-21 12:29:24,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:24,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:24,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:29:24,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash -804228106, now seen corresponding path program 1 times [2020-09-21 12:29:24,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:24,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468299885] [2020-09-21 12:29:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-21 12:29:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-21 12:29:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-21 12:29:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:29:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:25,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:25,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:29:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:29:26,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:29:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:26,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468299885] [2020-09-21 12:29:26,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:26,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:26,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176139027] [2020-09-21 12:29:26,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:26,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:26,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:26,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:26,272 INFO L87 Difference]: Start difference. First operand 319 states and 464 transitions. Second operand 5 states. [2020-09-21 12:29:27,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:27,526 INFO L93 Difference]: Finished difference Result 739 states and 1105 transitions. [2020-09-21 12:29:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:27,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-21 12:29:27,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:27,529 INFO L225 Difference]: With dead ends: 739 [2020-09-21 12:29:27,530 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:27,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 462 transitions. [2020-09-21 12:29:27,545 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 462 transitions. Word has length 174 [2020-09-21 12:29:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:27,546 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 462 transitions. [2020-09-21 12:29:27,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 462 transitions. [2020-09-21 12:29:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-21 12:29:27,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:27,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:27,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:29:27,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash 90532936, now seen corresponding path program 1 times [2020-09-21 12:29:27,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:27,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359073517] [2020-09-21 12:29:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:29:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:29:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-21 12:29:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:28,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:28,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:29,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:29:29,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-21 12:29:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:29:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:29,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359073517] [2020-09-21 12:29:29,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:29,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:29,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126638248] [2020-09-21 12:29:29,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:29,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:29,334 INFO L87 Difference]: Start difference. First operand 319 states and 462 transitions. Second operand 7 states. [2020-09-21 12:29:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:30,834 INFO L93 Difference]: Finished difference Result 741 states and 1102 transitions. [2020-09-21 12:29:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:29:30,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-21 12:29:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:30,840 INFO L225 Difference]: With dead ends: 741 [2020-09-21 12:29:30,840 INFO L226 Difference]: Without dead ends: 327 [2020-09-21 12:29:30,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:29:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-21 12:29:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2020-09-21 12:29:30,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-21 12:29:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 461 transitions. [2020-09-21 12:29:30,861 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 461 transitions. Word has length 190 [2020-09-21 12:29:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:30,861 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 461 transitions. [2020-09-21 12:29:30,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 461 transitions. [2020-09-21 12:29:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-21 12:29:30,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:30,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:30,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:29:30,867 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash -454339638, now seen corresponding path program 1 times [2020-09-21 12:29:30,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:30,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191861933] [2020-09-21 12:29:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:31,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:31,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-21 12:29:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:29:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:29:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-21 12:29:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:29:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:32,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:29:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:29:32,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:29:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:32,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191861933] [2020-09-21 12:29:32,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:29:32,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:29:32,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222420692] [2020-09-21 12:29:32,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:32,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:32,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:32,138 INFO L87 Difference]: Start difference. First operand 319 states and 461 transitions. Second operand 5 states. [2020-09-21 12:29:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:33,313 INFO L93 Difference]: Finished difference Result 789 states and 1156 transitions. [2020-09-21 12:29:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:33,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-21 12:29:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:33,318 INFO L225 Difference]: With dead ends: 789 [2020-09-21 12:29:33,318 INFO L226 Difference]: Without dead ends: 475 [2020-09-21 12:29:33,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-09-21 12:29:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 468. [2020-09-21 12:29:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-09-21 12:29:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 635 transitions. [2020-09-21 12:29:33,337 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 635 transitions. Word has length 190 [2020-09-21 12:29:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:33,338 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 635 transitions. [2020-09-21 12:29:33,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 635 transitions. [2020-09-21 12:29:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-21 12:29:33,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:33,341 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, 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] [2020-09-21 12:29:33,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:29:33,342 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:33,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1333213067, now seen corresponding path program 1 times [2020-09-21 12:29:33,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:33,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253377986] [2020-09-21 12:29:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:34,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-21 12:29:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-09-21 12:29:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:29:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:29:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:29:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:29:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:34,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:29:34,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-21 12:29:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:29:34,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:34,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253377986] [2020-09-21 12:29:34,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:29:34,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:29:34,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306653946] [2020-09-21 12:29:34,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:34,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:34,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:34,920 INFO L87 Difference]: Start difference. First operand 468 states and 635 transitions. Second operand 7 states. [2020-09-21 12:29:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:36,564 INFO L93 Difference]: Finished difference Result 1101 states and 1520 transitions. [2020-09-21 12:29:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:36,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-21 12:29:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:36,569 INFO L225 Difference]: With dead ends: 1101 [2020-09-21 12:29:36,570 INFO L226 Difference]: Without dead ends: 639 [2020-09-21 12:29:36,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:36,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-09-21 12:29:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 620. [2020-09-21 12:29:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-09-21 12:29:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 811 transitions. [2020-09-21 12:29:36,596 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 811 transitions. Word has length 209 [2020-09-21 12:29:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:36,596 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 811 transitions. [2020-09-21 12:29:36,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 811 transitions. [2020-09-21 12:29:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-21 12:29:36,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:36,601 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, 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, 1, 1, 1] [2020-09-21 12:29:36,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:29:36,601 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:36,602 INFO L82 PathProgramCache]: Analyzing trace with hash -849045353, now seen corresponding path program 1 times [2020-09-21 12:29:36,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:36,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812246811] [2020-09-21 12:29:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-21 12:29:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:29:37,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-21 12:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:29:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:29:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:29:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:29:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:29:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:29:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 12:29:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:29:38,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812246811] [2020-09-21 12:29:38,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:38,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:38,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717749258] [2020-09-21 12:29:38,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:38,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:38,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:38,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:38,076 INFO L87 Difference]: Start difference. First operand 620 states and 811 transitions. Second operand 7 states. [2020-09-21 12:29:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:40,475 INFO L93 Difference]: Finished difference Result 1826 states and 2420 transitions. [2020-09-21 12:29:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:29:40,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-21 12:29:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:40,482 INFO L225 Difference]: With dead ends: 1826 [2020-09-21 12:29:40,482 INFO L226 Difference]: Without dead ends: 913 [2020-09-21 12:29:40,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:40,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-09-21 12:29:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 906. [2020-09-21 12:29:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-09-21 12:29:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1085 transitions. [2020-09-21 12:29:40,523 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1085 transitions. Word has length 230 [2020-09-21 12:29:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:40,524 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1085 transitions. [2020-09-21 12:29:40,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1085 transitions. [2020-09-21 12:29:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-21 12:29:40,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:40,529 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, 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, 1, 1, 1] [2020-09-21 12:29:40,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:29:40,529 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash -85057145, now seen corresponding path program 1 times [2020-09-21 12:29:40,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:40,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634876831] [2020-09-21 12:29:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:41,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:41,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-21 12:29:41,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:29:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 12:29:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:41,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:41,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:41,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:29:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:29:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:29:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:29:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:29:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:41,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:41,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:29:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 12:29:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:29:42,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634876831] [2020-09-21 12:29:42,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:42,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:42,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873317649] [2020-09-21 12:29:42,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:42,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:42,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:42,140 INFO L87 Difference]: Start difference. First operand 906 states and 1085 transitions. Second operand 7 states. [2020-09-21 12:29:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:44,931 INFO L93 Difference]: Finished difference Result 2627 states and 3411 transitions. [2020-09-21 12:29:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:29:44,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-09-21 12:29:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:44,948 INFO L225 Difference]: With dead ends: 2627 [2020-09-21 12:29:44,948 INFO L226 Difference]: Without dead ends: 1731 [2020-09-21 12:29:44,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:29:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-09-21 12:29:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1654. [2020-09-21 12:29:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-09-21 12:29:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 1973 transitions. [2020-09-21 12:29:45,046 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 1973 transitions. Word has length 238 [2020-09-21 12:29:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:45,048 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 1973 transitions. [2020-09-21 12:29:45,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 1973 transitions. [2020-09-21 12:29:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-21 12:29:45,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:45,055 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-21 12:29:45,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:29:45,056 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash -439123222, now seen corresponding path program 1 times [2020-09-21 12:29:45,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:45,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256489606] [2020-09-21 12:29:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:46,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-21 12:29:46,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:29:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:29:46,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 12:29:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:29:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:29:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:29:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:29:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:29:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:29:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:29:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:29:46,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:29:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:29:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:29:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:29:46,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-21 12:29:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 134 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 12:29:46,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256489606] [2020-09-21 12:29:46,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:46,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:29:46,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390204342] [2020-09-21 12:29:46,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:29:46,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:29:46,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:29:46,651 INFO L87 Difference]: Start difference. First operand 1654 states and 1973 transitions. Second operand 8 states. [2020-09-21 12:29:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:49,696 INFO L93 Difference]: Finished difference Result 3507 states and 4387 transitions. [2020-09-21 12:29:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:29:49,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-09-21 12:29:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:49,706 INFO L225 Difference]: With dead ends: 3507 [2020-09-21 12:29:49,706 INFO L226 Difference]: Without dead ends: 1680 [2020-09-21 12:29:49,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:29:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-09-21 12:29:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1647. [2020-09-21 12:29:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2020-09-21 12:29:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 1812 transitions. [2020-09-21 12:29:49,762 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 1812 transitions. Word has length 259 [2020-09-21 12:29:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:49,763 INFO L479 AbstractCegarLoop]: Abstraction has 1647 states and 1812 transitions. [2020-09-21 12:29:49,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:29:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 1812 transitions. [2020-09-21 12:29:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-21 12:29:49,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:49,770 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:29:49,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:29:49,770 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:49,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1704065649, now seen corresponding path program 1 times [2020-09-21 12:29:49,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:49,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301124201] [2020-09-21 12:29:49,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:50,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:50,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-21 12:29:50,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:29:50,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-21 12:29:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:29:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 12:29:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:29:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:51,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:29:51,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301124201] [2020-09-21 12:29:51,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:51,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:51,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594741119] [2020-09-21 12:29:51,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:51,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:51,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:51,238 INFO L87 Difference]: Start difference. First operand 1647 states and 1812 transitions. Second operand 7 states. [2020-09-21 12:29:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:52,405 INFO L93 Difference]: Finished difference Result 3151 states and 3497 transitions. [2020-09-21 12:29:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:29:52,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-09-21 12:29:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:52,414 INFO L225 Difference]: With dead ends: 3151 [2020-09-21 12:29:52,414 INFO L226 Difference]: Without dead ends: 1502 [2020-09-21 12:29:52,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:29:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-09-21 12:29:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1500. [2020-09-21 12:29:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-09-21 12:29:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1604 transitions. [2020-09-21 12:29:52,476 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1604 transitions. Word has length 279 [2020-09-21 12:29:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:52,477 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1604 transitions. [2020-09-21 12:29:52,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1604 transitions. [2020-09-21 12:29:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-21 12:29:52,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:52,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-09-21 12:29:52,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:29:52,486 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:52,486 INFO L82 PathProgramCache]: Analyzing trace with hash 921405993, now seen corresponding path program 1 times [2020-09-21 12:29:52,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:52,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654445400] [2020-09-21 12:29:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-09-21 12:29:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 12:29:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:53,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:53,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:53,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:29:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:29:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:29:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:29:53,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:29:53,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 12:29:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:29:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 12:29:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:53,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:29:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:29:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:29:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-21 12:29:54,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654445400] [2020-09-21 12:29:54,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:54,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:54,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082496504] [2020-09-21 12:29:54,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:54,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:54,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:54,020 INFO L87 Difference]: Start difference. First operand 1500 states and 1604 transitions. Second operand 7 states. [2020-09-21 12:29:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:55,344 INFO L93 Difference]: Finished difference Result 2403 states and 2577 transitions. [2020-09-21 12:29:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:29:55,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-09-21 12:29:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:55,345 INFO L225 Difference]: With dead ends: 2403 [2020-09-21 12:29:55,345 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:29:55,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:29:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:29:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:29:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:29:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:29:55,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 313 [2020-09-21 12:29:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:55,354 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:29:55,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:29:55,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:29:55,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:29:55,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.