/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:55,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:55,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:55,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:55,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:55,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:55,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:55,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:55,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:55,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:55,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:55,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:55,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:55,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:55,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:55,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:55,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:55,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:55,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:55,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:55,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:55,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:55,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:55,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:55,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:55,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:55,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:55,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:55,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:55,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:55,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:55,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:55,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:55,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:55,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:55,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:55,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:55,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:55,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:55,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:55,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:24:55,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:55,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:55,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:55,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:55,950 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:55,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:55,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:55,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:55,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:55,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:55,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:55,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:55,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:55,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:55,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:55,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:55,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:55,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:55,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:55,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:55,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:55,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:55,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:55,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:55,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:55,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:55,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:55,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:55,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:55,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=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; [2020-09-24 19:24:56,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:56,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:56,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:56,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:56,453 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:56,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 19:24:56,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388184c9b/982eebf8cd854468b319e31bd4dc4e23/FLAG741892939 [2020-09-24 19:24:57,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:57,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 19:24:57,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388184c9b/982eebf8cd854468b319e31bd4dc4e23/FLAG741892939 [2020-09-24 19:24:57,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388184c9b/982eebf8cd854468b319e31bd4dc4e23 [2020-09-24 19:24:57,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:57,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:57,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:57,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:57,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:57,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:57" (1/1) ... [2020-09-24 19:24:57,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:57, skipping insertion in model container [2020-09-24 19:24:57,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:57" (1/1) ... [2020-09-24 19:24:57,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:57,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:58,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:58,013 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:58,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:58,327 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:58,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58 WrapperNode [2020-09-24 19:24:58,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:58,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:58,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:58,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:58,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... [2020-09-24 19:24:58,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:58,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:58,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:58,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:58,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:24:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:24:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:59,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:59,900 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:24:59,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:59 BoogieIcfgContainer [2020-09-24 19:24:59,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:59,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:59,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:59,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:59,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:57" (1/3) ... [2020-09-24 19:24:59,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:59, skipping insertion in model container [2020-09-24 19:24:59,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:58" (2/3) ... [2020-09-24 19:24:59,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:59, skipping insertion in model container [2020-09-24 19:24:59,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:59" (3/3) ... [2020-09-24 19:24:59,920 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-24 19:24:59,932 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:59,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:59,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:00,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:00,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:00,001 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:00,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:00,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:00,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:00,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:00,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 19:25:00,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:00,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:00,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:00,069 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-24 19:25:00,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:00,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-24 19:25:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 19:25:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-24 19:25:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 19:25:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:25:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:01,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:25:01,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:01,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-24 19:25:01,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:01,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:25:01,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014702360] [2020-09-24 19:25:01,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:25:01,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:25:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:25:01,781 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:04,321 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 19:25:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:04,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-24 19:25:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:04,348 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 19:25:04,348 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 19:25:04,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 19:25:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 19:25:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:25:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 19:25:04,462 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-24 19:25:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:04,463 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 19:25:04,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 19:25:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 19:25:04,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:04,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:04,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:04,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1608331772, now seen corresponding path program 1 times [2020-09-24 19:25:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:04,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556647742] [2020-09-24 19:25:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 19:25:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:25:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:25:05,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:25:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:05,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:05,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556647742] [2020-09-24 19:25:05,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:05,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:25:05,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989703235] [2020-09-24 19:25:05,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:05,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:05,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:05,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:05,843 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 19:25:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:08,094 INFO L93 Difference]: Finished difference Result 1536 states and 1909 transitions. [2020-09-24 19:25:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:08,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-24 19:25:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:08,112 INFO L225 Difference]: With dead ends: 1536 [2020-09-24 19:25:08,112 INFO L226 Difference]: Without dead ends: 957 [2020-09-24 19:25:08,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-09-24 19:25:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 899. [2020-09-24 19:25:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-09-24 19:25:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2020-09-24 19:25:08,176 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 162 [2020-09-24 19:25:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:08,177 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2020-09-24 19:25:08,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2020-09-24 19:25:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 19:25:08,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:08,183 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:08,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:08,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:08,184 INFO L82 PathProgramCache]: Analyzing trace with hash -953572094, now seen corresponding path program 1 times [2020-09-24 19:25:08,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:08,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066508020] [2020-09-24 19:25:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 19:25:09,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:25:09,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:09,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:09,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:09,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 19:25:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:09,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066508020] [2020-09-24 19:25:09,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:09,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:09,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935541662] [2020-09-24 19:25:09,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:09,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:09,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:09,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:09,702 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand 7 states. [2020-09-24 19:25:12,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:12,388 INFO L93 Difference]: Finished difference Result 2055 states and 2598 transitions. [2020-09-24 19:25:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:12,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-24 19:25:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:12,401 INFO L225 Difference]: With dead ends: 2055 [2020-09-24 19:25:12,401 INFO L226 Difference]: Without dead ends: 1180 [2020-09-24 19:25:12,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-09-24 19:25:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1070. [2020-09-24 19:25:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-09-24 19:25:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1308 transitions. [2020-09-24 19:25:12,469 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1308 transitions. Word has length 203 [2020-09-24 19:25:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:12,475 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1308 transitions. [2020-09-24 19:25:12,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1308 transitions. [2020-09-24 19:25:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 19:25:12,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:12,485 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:12,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:12,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1461043931, now seen corresponding path program 1 times [2020-09-24 19:25:12,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:12,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633916046] [2020-09-24 19:25:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 19:25:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:25:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:25:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:25:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:13,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:13,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:25:13,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:25:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:25:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:13,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 19:25:13,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:13,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633916046] [2020-09-24 19:25:13,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:13,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:13,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319713502] [2020-09-24 19:25:13,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:13,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:13,960 INFO L87 Difference]: Start difference. First operand 1070 states and 1308 transitions. Second operand 7 states. [2020-09-24 19:25:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:16,299 INFO L93 Difference]: Finished difference Result 3027 states and 3848 transitions. [2020-09-24 19:25:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:16,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-24 19:25:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:16,311 INFO L225 Difference]: With dead ends: 3027 [2020-09-24 19:25:16,311 INFO L226 Difference]: Without dead ends: 1981 [2020-09-24 19:25:16,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-09-24 19:25:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1582. [2020-09-24 19:25:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-09-24 19:25:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1943 transitions. [2020-09-24 19:25:16,375 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1943 transitions. Word has length 207 [2020-09-24 19:25:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:16,375 INFO L479 AbstractCegarLoop]: Abstraction has 1582 states and 1943 transitions. [2020-09-24 19:25:16,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1943 transitions. [2020-09-24 19:25:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 19:25:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:16,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:16,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:16,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:16,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:16,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1548824509, now seen corresponding path program 1 times [2020-09-24 19:25:16,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:16,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148507826] [2020-09-24 19:25:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:17,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:17,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-24 19:25:17,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:25:17,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 19:25:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:25:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:17,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 19:25:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:17,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:17,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:17,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:25:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:25:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:17,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:25:17,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:17,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148507826] [2020-09-24 19:25:17,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:17,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:17,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658507452] [2020-09-24 19:25:17,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:17,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:17,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:17,965 INFO L87 Difference]: Start difference. First operand 1582 states and 1943 transitions. Second operand 8 states. [2020-09-24 19:25:18,618 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:25:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:21,494 INFO L93 Difference]: Finished difference Result 4323 states and 5579 transitions. [2020-09-24 19:25:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:25:21,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-24 19:25:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:21,513 INFO L225 Difference]: With dead ends: 4323 [2020-09-24 19:25:21,513 INFO L226 Difference]: Without dead ends: 2765 [2020-09-24 19:25:21,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:25:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2020-09-24 19:25:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2625. [2020-09-24 19:25:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2625 states. [2020-09-24 19:25:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3325 transitions. [2020-09-24 19:25:21,610 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 3325 transitions. Word has length 210 [2020-09-24 19:25:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:21,611 INFO L479 AbstractCegarLoop]: Abstraction has 2625 states and 3325 transitions. [2020-09-24 19:25:21,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 3325 transitions. [2020-09-24 19:25:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 19:25:21,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:21,623 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, 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] [2020-09-24 19:25:21,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:21,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:21,624 INFO L82 PathProgramCache]: Analyzing trace with hash -244060369, now seen corresponding path program 1 times [2020-09-24 19:25:21,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:21,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346585435] [2020-09-24 19:25:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:22,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 19:25:22,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:25:22,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-24 19:25:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 19:25:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:22,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 19:25:22,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:25:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:23,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346585435] [2020-09-24 19:25:23,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:23,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:23,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470520316] [2020-09-24 19:25:23,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:23,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:23,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:23,095 INFO L87 Difference]: Start difference. First operand 2625 states and 3325 transitions. Second operand 5 states. [2020-09-24 19:25:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:25,085 INFO L93 Difference]: Finished difference Result 7047 states and 9098 transitions. [2020-09-24 19:25:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:25,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-24 19:25:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:25,108 INFO L225 Difference]: With dead ends: 7047 [2020-09-24 19:25:25,108 INFO L226 Difference]: Without dead ends: 4446 [2020-09-24 19:25:25,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2020-09-24 19:25:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 3489. [2020-09-24 19:25:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3489 states. [2020-09-24 19:25:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 4542 transitions. [2020-09-24 19:25:25,233 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 4542 transitions. Word has length 227 [2020-09-24 19:25:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:25,233 INFO L479 AbstractCegarLoop]: Abstraction has 3489 states and 4542 transitions. [2020-09-24 19:25:25,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 4542 transitions. [2020-09-24 19:25:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-24 19:25:25,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:25,254 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, 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] [2020-09-24 19:25:25,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:25,254 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1578188171, now seen corresponding path program 1 times [2020-09-24 19:25:25,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:25,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950159870] [2020-09-24 19:25:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 19:25:26,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:26,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 19:25:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:25:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:26,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:25:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 19:25:26,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 19:25:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 19:25:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:25:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:26,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950159870] [2020-09-24 19:25:26,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:26,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746683419] [2020-09-24 19:25:26,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:26,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:26,931 INFO L87 Difference]: Start difference. First operand 3489 states and 4542 transitions. Second operand 7 states. [2020-09-24 19:25:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:29,167 INFO L93 Difference]: Finished difference Result 7420 states and 9683 transitions. [2020-09-24 19:25:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:29,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-24 19:25:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:29,197 INFO L225 Difference]: With dead ends: 7420 [2020-09-24 19:25:29,197 INFO L226 Difference]: Without dead ends: 3955 [2020-09-24 19:25:29,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2020-09-24 19:25:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3630. [2020-09-24 19:25:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3630 states. [2020-09-24 19:25:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 4573 transitions. [2020-09-24 19:25:29,369 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 4573 transitions. Word has length 245 [2020-09-24 19:25:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:29,370 INFO L479 AbstractCegarLoop]: Abstraction has 3630 states and 4573 transitions. [2020-09-24 19:25:29,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 4573 transitions. [2020-09-24 19:25:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-24 19:25:29,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:29,397 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, 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] [2020-09-24 19:25:29,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:29,397 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash -637554282, now seen corresponding path program 1 times [2020-09-24 19:25:29,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:29,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047203629] [2020-09-24 19:25:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-24 19:25:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:25:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-24 19:25:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:25:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:30,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:30,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:30,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:30,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:30,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:30,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:25:30,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:25:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 19:25:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:30,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:30,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 19:25:30,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:25:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 19:25:31,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047203629] [2020-09-24 19:25:31,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:31,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:25:31,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160042695] [2020-09-24 19:25:31,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:25:31,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:25:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:25:31,347 INFO L87 Difference]: Start difference. First operand 3630 states and 4573 transitions. Second operand 9 states. [2020-09-24 19:25:35,525 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-09-24 19:25:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:36,004 INFO L93 Difference]: Finished difference Result 8536 states and 10669 transitions. [2020-09-24 19:25:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:25:36,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 264 [2020-09-24 19:25:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:36,028 INFO L225 Difference]: With dead ends: 8536 [2020-09-24 19:25:36,028 INFO L226 Difference]: Without dead ends: 4930 [2020-09-24 19:25:36,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 19:25:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4930 states. [2020-09-24 19:25:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4930 to 3818. [2020-09-24 19:25:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3818 states. [2020-09-24 19:25:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 4670 transitions. [2020-09-24 19:25:36,155 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 4670 transitions. Word has length 264 [2020-09-24 19:25:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:36,156 INFO L479 AbstractCegarLoop]: Abstraction has 3818 states and 4670 transitions. [2020-09-24 19:25:36,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:25:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 4670 transitions. [2020-09-24 19:25:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 19:25:36,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:36,173 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, 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, 1, 1, 1] [2020-09-24 19:25:36,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:36,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash -98836453, now seen corresponding path program 1 times [2020-09-24 19:25:36,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:36,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493596953] [2020-09-24 19:25:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-24 19:25:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:25:37,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:25:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:25:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:37,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:37,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:37,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:25:37,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:37,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:25:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:37,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 19:25:37,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:25:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 137 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 19:25:37,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493596953] [2020-09-24 19:25:37,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:37,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:37,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535502533] [2020-09-24 19:25:37,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:37,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:37,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:37,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:37,998 INFO L87 Difference]: Start difference. First operand 3818 states and 4670 transitions. Second operand 7 states. [2020-09-24 19:25:40,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:40,642 INFO L93 Difference]: Finished difference Result 7684 states and 9775 transitions. [2020-09-24 19:25:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:40,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 19:25:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:40,663 INFO L225 Difference]: With dead ends: 7684 [2020-09-24 19:25:40,663 INFO L226 Difference]: Without dead ends: 4031 [2020-09-24 19:25:40,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2020-09-24 19:25:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 3020. [2020-09-24 19:25:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3020 states. [2020-09-24 19:25:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 3483 transitions. [2020-09-24 19:25:40,778 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 3483 transitions. Word has length 267 [2020-09-24 19:25:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:40,779 INFO L479 AbstractCegarLoop]: Abstraction has 3020 states and 3483 transitions. [2020-09-24 19:25:40,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 3483 transitions. [2020-09-24 19:25:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-24 19:25:40,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:40,792 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:40,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash -382552263, now seen corresponding path program 1 times [2020-09-24 19:25:40,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:40,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901015225] [2020-09-24 19:25:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-24 19:25:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-24 19:25:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 19:25:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 19:25:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:42,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:42,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:42,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:42,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 19:25:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:25:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 119 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:25:42,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901015225] [2020-09-24 19:25:42,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:42,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:42,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980973821] [2020-09-24 19:25:42,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:42,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:42,333 INFO L87 Difference]: Start difference. First operand 3020 states and 3483 transitions. Second operand 5 states. [2020-09-24 19:25:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:44,322 INFO L93 Difference]: Finished difference Result 3639 states and 4235 transitions. [2020-09-24 19:25:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:44,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-09-24 19:25:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:44,324 INFO L225 Difference]: With dead ends: 3639 [2020-09-24 19:25:44,324 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:25:44,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:25:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:25:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:25:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:25:44,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2020-09-24 19:25:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:44,336 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:25:44,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:25:44,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:25:44,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:44,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.