/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:08:36,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:08:36,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:08:36,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:08:36,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:08:36,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:08:36,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:08:36,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:08:36,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:08:36,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:08:36,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:08:36,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:08:36,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:08:36,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:08:36,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:08:36,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:08:36,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:08:36,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:08:36,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:08:36,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:08:36,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:08:36,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:08:36,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:08:36,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:08:36,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:08:36,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:08:36,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:08:36,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:08:36,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:08:36,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:08:36,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:08:36,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:08:36,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:08:36,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:08:36,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:08:36,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:08:36,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:08:36,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:08:36,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:08:36,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:08:36,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:08:36,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:08:36,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:08:36,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:08:36,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:08:36,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:08:36,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:08:36,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:08:36,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:08:36,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:08:36,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:08:36,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:08:36,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:08:36,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:08:36,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:08:36,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:08:36,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:08:36,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:08:36,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:08:36,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:08:36,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:08:36,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:08:36,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:08:36,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:08:36,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:08:36,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:08:36,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:08:36,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:08:36,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:08:36,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:08:36,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:08:36,097 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:08:36,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:08:36,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:08:36,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:08:36,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:08:36,444 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:08:36,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-13 09:08:36,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa27580df/b61071d9dd714123a4cb2eb1ed153ae9/FLAG611a3150a [2020-10-13 09:08:37,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:08:37,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-13 09:08:37,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa27580df/b61071d9dd714123a4cb2eb1ed153ae9/FLAG611a3150a [2020-10-13 09:08:37,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa27580df/b61071d9dd714123a4cb2eb1ed153ae9 [2020-10-13 09:08:37,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:08:37,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:08:37,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:37,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:08:37,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:08:37,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:37" (1/1) ... [2020-10-13 09:08:37,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272573d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:37, skipping insertion in model container [2020-10-13 09:08:37,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:37" (1/1) ... [2020-10-13 09:08:37,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:08:37,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:08:38,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:38,569 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:08:38,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:38,881 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:08:38,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38 WrapperNode [2020-10-13 09:08:38,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:38,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:08:38,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:08:38,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:08:38,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:38,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:38,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:38,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:39,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:39,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:39,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... [2020-10-13 09:08:39,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:08:39,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:08:39,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:08:39,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:08:39,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:08:39,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:08:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:08:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:08:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:08:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:08:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:08:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:08:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:08:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:08:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:08:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:08:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:08:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:08:44,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:08:44,890 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:08:44,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:44 BoogieIcfgContainer [2020-10-13 09:08:44,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:08:44,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:08:44,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:08:44,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:08:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:08:37" (1/3) ... [2020-10-13 09:08:44,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a39c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:44, skipping insertion in model container [2020-10-13 09:08:44,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:38" (2/3) ... [2020-10-13 09:08:44,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a39c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:44, skipping insertion in model container [2020-10-13 09:08:44,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:44" (3/3) ... [2020-10-13 09:08:44,905 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-13 09:08:44,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:08:44,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:08:44,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:08:44,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:08:44,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:08:44,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:08:44,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:08:44,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:08:44,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:08:44,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:08:44,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:08:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:08:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 09:08:44,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:44,998 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] [2020-10-13 09:08:44,998 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1195543285, now seen corresponding path program 1 times [2020-10-13 09:08:45,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:45,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754409072] [2020-10-13 09:08:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:45,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:45,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 09:08:45,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-13 09:08:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:08:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:45,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:08:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:08:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:45,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754409072] [2020-10-13 09:08:45,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:08:45,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:08:45,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669658929] [2020-10-13 09:08:45,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:08:45,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:45,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:08:45,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:08:45,706 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:08:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:51,914 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-13 09:08:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:51,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 09:08:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:51,937 INFO L225 Difference]: With dead ends: 1198 [2020-10-13 09:08:51,938 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:08:51,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:08:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-13 09:08:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-13 09:08:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-13 09:08:52,042 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 35 [2020-10-13 09:08:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:52,043 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-13 09:08:52,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:08:52,043 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-13 09:08:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 09:08:52,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:52,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:08:52,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:08:52,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash 968683602, now seen corresponding path program 1 times [2020-10-13 09:08:52,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:52,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67058965] [2020-10-13 09:08:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:08:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:08:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-13 09:08:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:08:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:08:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:08:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:08:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:53,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:08:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:08:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:08:53,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:08:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:53,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67058965] [2020-10-13 09:08:53,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:53,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:53,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789923493] [2020-10-13 09:08:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:53,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:53,668 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 5 states. [2020-10-13 09:09:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:01,610 INFO L93 Difference]: Finished difference Result 1998 states and 2941 transitions. [2020-10-13 09:09:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:01,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 09:09:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:01,618 INFO L225 Difference]: With dead ends: 1998 [2020-10-13 09:09:01,619 INFO L226 Difference]: Without dead ends: 1316 [2020-10-13 09:09:01,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-13 09:09:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1314. [2020-10-13 09:09:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-13 09:09:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1705 transitions. [2020-10-13 09:09:01,702 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1705 transitions. Word has length 104 [2020-10-13 09:09:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:01,703 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 1705 transitions. [2020-10-13 09:09:01,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1705 transitions. [2020-10-13 09:09:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 09:09:01,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:01,722 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:01,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:09:01,723 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash 775879246, now seen corresponding path program 1 times [2020-10-13 09:09:01,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:01,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143029099] [2020-10-13 09:09:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 09:09:06,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:09:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4900 [2020-10-13 09:09:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:09:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:06,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:06,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:06,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:06,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:09:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:06,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:09:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:07,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:07,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:09:07,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:09:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:09:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:09:07,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143029099] [2020-10-13 09:09:07,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:07,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:07,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626150953] [2020-10-13 09:09:07,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:07,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:07,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:07,093 INFO L87 Difference]: Start difference. First operand 1314 states and 1705 transitions. Second operand 5 states. [2020-10-13 09:09:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:15,175 INFO L93 Difference]: Finished difference Result 2946 states and 4026 transitions. [2020-10-13 09:09:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:15,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-13 09:09:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:15,189 INFO L225 Difference]: With dead ends: 2946 [2020-10-13 09:09:15,189 INFO L226 Difference]: Without dead ends: 1945 [2020-10-13 09:09:15,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-10-13 09:09:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1945. [2020-10-13 09:09:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-10-13 09:09:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2419 transitions. [2020-10-13 09:09:15,245 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2419 transitions. Word has length 209 [2020-10-13 09:09:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:15,247 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2419 transitions. [2020-10-13 09:09:15,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2419 transitions. [2020-10-13 09:09:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 09:09:15,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:15,253 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:15,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:09:15,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash -27741513, now seen corresponding path program 1 times [2020-10-13 09:09:15,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:15,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297959660] [2020-10-13 09:09:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 09:09:17,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-13 09:09:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-10-13 09:09:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:09:17,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:09:17,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:17,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:17,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:09:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:09:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 09:09:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:09:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:18,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297959660] [2020-10-13 09:09:18,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:18,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:18,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917334518] [2020-10-13 09:09:18,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:18,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:18,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:18,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:18,065 INFO L87 Difference]: Start difference. First operand 1945 states and 2419 transitions. Second operand 5 states. [2020-10-13 09:09:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:25,945 INFO L93 Difference]: Finished difference Result 4199 states and 5452 transitions. [2020-10-13 09:09:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:25,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 09:09:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:25,969 INFO L225 Difference]: With dead ends: 4199 [2020-10-13 09:09:25,970 INFO L226 Difference]: Without dead ends: 2567 [2020-10-13 09:09:25,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-10-13 09:09:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2567. [2020-10-13 09:09:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2020-10-13 09:09:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3179 transitions. [2020-10-13 09:09:26,057 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3179 transitions. Word has length 246 [2020-10-13 09:09:26,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:26,059 INFO L479 AbstractCegarLoop]: Abstraction has 2567 states and 3179 transitions. [2020-10-13 09:09:26,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3179 transitions. [2020-10-13 09:09:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-13 09:09:26,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:26,065 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:26,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:09:26,065 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:26,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1046458971, now seen corresponding path program 1 times [2020-10-13 09:09:26,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:26,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247300950] [2020-10-13 09:09:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:31,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:09:31,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 09:09:31,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:09:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 09:09:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 09:09:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:31,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:31,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:31,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:09:31,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:09:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:31,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:31,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:09:31,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:09:31,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:09:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:31,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247300950] [2020-10-13 09:09:31,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:31,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:31,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197115926] [2020-10-13 09:09:31,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:31,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:31,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:31,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:31,749 INFO L87 Difference]: Start difference. First operand 2567 states and 3179 transitions. Second operand 5 states. [2020-10-13 09:09:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:40,843 INFO L93 Difference]: Finished difference Result 5133 states and 6751 transitions. [2020-10-13 09:09:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:40,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-13 09:09:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:40,866 INFO L225 Difference]: With dead ends: 5133 [2020-10-13 09:09:40,866 INFO L226 Difference]: Without dead ends: 3808 [2020-10-13 09:09:40,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2020-10-13 09:09:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3808. [2020-10-13 09:09:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2020-10-13 09:09:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 4812 transitions. [2020-10-13 09:09:40,977 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 4812 transitions. Word has length 253 [2020-10-13 09:09:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 3808 states and 4812 transitions. [2020-10-13 09:09:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 4812 transitions. [2020-10-13 09:09:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-13 09:09:40,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:40,983 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:40,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:09:40,983 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 291733998, now seen corresponding path program 1 times [2020-10-13 09:09:40,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:40,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523676767] [2020-10-13 09:09:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 09:09:42,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-10-13 09:09:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-10-13 09:09:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:09:42,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:42,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:09:42,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:42,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:42,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:09:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:09:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:09:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:09:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:43,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523676767] [2020-10-13 09:09:43,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:43,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:43,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335210328] [2020-10-13 09:09:43,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:43,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:43,318 INFO L87 Difference]: Start difference. First operand 3808 states and 4812 transitions. Second operand 5 states. [2020-10-13 09:09:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:52,559 INFO L93 Difference]: Finished difference Result 7614 states and 10015 transitions. [2020-10-13 09:09:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:52,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-13 09:09:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:52,586 INFO L225 Difference]: With dead ends: 7614 [2020-10-13 09:09:52,587 INFO L226 Difference]: Without dead ends: 5048 [2020-10-13 09:09:52,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-10-13 09:09:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5046. [2020-10-13 09:09:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2020-10-13 09:09:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6202 transitions. [2020-10-13 09:09:52,713 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6202 transitions. Word has length 259 [2020-10-13 09:09:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:52,714 INFO L479 AbstractCegarLoop]: Abstraction has 5046 states and 6202 transitions. [2020-10-13 09:09:52,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6202 transitions. [2020-10-13 09:09:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 09:09:52,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:52,719 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:52,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:09:52,720 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash 647239146, now seen corresponding path program 1 times [2020-10-13 09:09:52,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:52,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900640475] [2020-10-13 09:09:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-10-13 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:55,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:55,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:55,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:55,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:09:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:09:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 09:09:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:09:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:56,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900640475] [2020-10-13 09:09:56,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:56,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:56,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562940420] [2020-10-13 09:09:56,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:56,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:56,354 INFO L87 Difference]: Start difference. First operand 5046 states and 6202 transitions. Second operand 5 states. [2020-10-13 09:10:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:03,543 INFO L93 Difference]: Finished difference Result 8873 states and 11069 transitions. [2020-10-13 09:10:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:03,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-13 09:10:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:03,572 INFO L225 Difference]: With dead ends: 8873 [2020-10-13 09:10:03,572 INFO L226 Difference]: Without dead ends: 5046 [2020-10-13 09:10:03,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2020-10-13 09:10:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 5046. [2020-10-13 09:10:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2020-10-13 09:10:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6198 transitions. [2020-10-13 09:10:03,721 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6198 transitions. Word has length 273 [2020-10-13 09:10:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:03,722 INFO L479 AbstractCegarLoop]: Abstraction has 5046 states and 6198 transitions. [2020-10-13 09:10:03,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6198 transitions. [2020-10-13 09:10:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 09:10:03,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:03,729 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:10:03,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:10:03,730 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:03,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2023340549, now seen corresponding path program 1 times [2020-10-13 09:10:03,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:03,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564932054] [2020-10-13 09:10:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:05,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:10:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:05,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:05,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:05,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:10:05,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:10:05,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:10:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:10:05,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564932054] [2020-10-13 09:10:05,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:05,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:05,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885649466] [2020-10-13 09:10:05,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:05,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:05,754 INFO L87 Difference]: Start difference. First operand 5046 states and 6198 transitions. Second operand 5 states. [2020-10-13 09:10:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:15,028 INFO L93 Difference]: Finished difference Result 11341 states and 14572 transitions. [2020-10-13 09:10:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:15,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-13 09:10:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:15,075 INFO L225 Difference]: With dead ends: 11341 [2020-10-13 09:10:15,075 INFO L226 Difference]: Without dead ends: 7537 [2020-10-13 09:10:15,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7537 states. [2020-10-13 09:10:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7537 to 6309. [2020-10-13 09:10:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6309 states. [2020-10-13 09:10:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6309 states to 6309 states and 7806 transitions. [2020-10-13 09:10:15,265 INFO L78 Accepts]: Start accepts. Automaton has 6309 states and 7806 transitions. Word has length 280 [2020-10-13 09:10:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:15,266 INFO L479 AbstractCegarLoop]: Abstraction has 6309 states and 7806 transitions. [2020-10-13 09:10:15,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6309 states and 7806 transitions. [2020-10-13 09:10:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 09:10:15,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:15,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:15,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:10:15,279 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash -199296908, now seen corresponding path program 1 times [2020-10-13 09:10:15,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:15,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782710362] [2020-10-13 09:10:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:20,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 09:10:20,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:20,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:10:20,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:20,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:10:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:10:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:10:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 09:10:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:10:20,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:10:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 09:10:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-13 09:10:20,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782710362] [2020-10-13 09:10:20,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:10:20,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:10:20,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831697946] [2020-10-13 09:10:20,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:20,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:20,832 INFO L87 Difference]: Start difference. First operand 6309 states and 7806 transitions. Second operand 5 states. [2020-10-13 09:10:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:27,382 INFO L93 Difference]: Finished difference Result 13852 states and 17829 transitions. [2020-10-13 09:10:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:27,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 09:10:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:27,417 INFO L225 Difference]: With dead ends: 13852 [2020-10-13 09:10:27,418 INFO L226 Difference]: Without dead ends: 8785 [2020-10-13 09:10:27,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8785 states. [2020-10-13 09:10:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8785 to 8785. [2020-10-13 09:10:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8785 states. [2020-10-13 09:10:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8785 states to 8785 states and 10828 transitions. [2020-10-13 09:10:27,592 INFO L78 Accepts]: Start accepts. Automaton has 8785 states and 10828 transitions. Word has length 326 [2020-10-13 09:10:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:27,593 INFO L479 AbstractCegarLoop]: Abstraction has 8785 states and 10828 transitions. [2020-10-13 09:10:27,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8785 states and 10828 transitions. [2020-10-13 09:10:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 09:10:27,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:27,603 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:10:27,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:10:27,603 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1382873523, now seen corresponding path program 1 times [2020-10-13 09:10:27,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:27,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083203659] [2020-10-13 09:10:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:31,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:31,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-13 09:10:31,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:10:31,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3551 [2020-10-13 09:10:31,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:10:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:10:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:31,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:31,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:10:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:10:31,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:31,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:10:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:10:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:10:31,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083203659] [2020-10-13 09:10:31,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:31,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:31,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780293036] [2020-10-13 09:10:31,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:31,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:31,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:31,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:31,721 INFO L87 Difference]: Start difference. First operand 8785 states and 10828 transitions. Second operand 5 states. [2020-10-13 09:10:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:37,314 INFO L93 Difference]: Finished difference Result 16357 states and 20333 transitions. [2020-10-13 09:10:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:37,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-13 09:10:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:37,348 INFO L225 Difference]: With dead ends: 16357 [2020-10-13 09:10:37,348 INFO L226 Difference]: Without dead ends: 8785 [2020-10-13 09:10:37,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8785 states. [2020-10-13 09:10:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8785 to 8785. [2020-10-13 09:10:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8785 states. [2020-10-13 09:10:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8785 states to 8785 states and 10810 transitions. [2020-10-13 09:10:37,517 INFO L78 Accepts]: Start accepts. Automaton has 8785 states and 10810 transitions. Word has length 331 [2020-10-13 09:10:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:37,518 INFO L479 AbstractCegarLoop]: Abstraction has 8785 states and 10810 transitions. [2020-10-13 09:10:37,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8785 states and 10810 transitions. [2020-10-13 09:10:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 09:10:37,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:37,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:10:37,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:10:37,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:37,534 INFO L82 PathProgramCache]: Analyzing trace with hash 508492906, now seen corresponding path program 1 times [2020-10-13 09:10:37,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:37,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955451659] [2020-10-13 09:10:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:42,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 09:10:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 09:10:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:10:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 09:10:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:10:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:42,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:42,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 09:10:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:42,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:10:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-13 09:10:42,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955451659] [2020-10-13 09:10:42,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:42,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:42,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025519847] [2020-10-13 09:10:42,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:42,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:42,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:42,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:42,906 INFO L87 Difference]: Start difference. First operand 8785 states and 10810 transitions. Second operand 5 states. [2020-10-13 09:10:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:51,189 INFO L93 Difference]: Finished difference Result 19434 states and 24682 transitions. [2020-10-13 09:10:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:51,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 346 [2020-10-13 09:10:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:51,232 INFO L225 Difference]: With dead ends: 19434 [2020-10-13 09:10:51,233 INFO L226 Difference]: Without dead ends: 10962 [2020-10-13 09:10:51,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2020-10-13 09:10:51,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 10960. [2020-10-13 09:10:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10960 states. [2020-10-13 09:10:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 13380 transitions. [2020-10-13 09:10:51,454 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 13380 transitions. Word has length 346 [2020-10-13 09:10:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:51,455 INFO L479 AbstractCegarLoop]: Abstraction has 10960 states and 13380 transitions. [2020-10-13 09:10:51,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 13380 transitions. [2020-10-13 09:10:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-13 09:10:51,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:51,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:51,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:10:51,466 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:51,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1390695019, now seen corresponding path program 1 times [2020-10-13 09:10:51,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:51,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563852959] [2020-10-13 09:10:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4312 [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:10:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:10:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:10:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 09:10:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:10:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:10:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:10:56,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563852959] [2020-10-13 09:10:56,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:56,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:10:56,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008472818] [2020-10-13 09:10:56,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:10:56,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:10:56,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:10:56,427 INFO L87 Difference]: Start difference. First operand 10960 states and 13380 transitions. Second operand 7 states. [2020-10-13 09:11:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:02,423 INFO L93 Difference]: Finished difference Result 20448 states and 25285 transitions. [2020-10-13 09:11:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:11:02,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-13 09:11:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:02,456 INFO L225 Difference]: With dead ends: 20448 [2020-10-13 09:11:02,457 INFO L226 Difference]: Without dead ends: 11019 [2020-10-13 09:11:02,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:11:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11019 states. [2020-10-13 09:11:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11019 to 11019. [2020-10-13 09:11:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11019 states. [2020-10-13 09:11:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11019 states to 11019 states and 13578 transitions. [2020-10-13 09:11:02,664 INFO L78 Accepts]: Start accepts. Automaton has 11019 states and 13578 transitions. Word has length 347 [2020-10-13 09:11:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:02,665 INFO L479 AbstractCegarLoop]: Abstraction has 11019 states and 13578 transitions. [2020-10-13 09:11:02,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:11:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 11019 states and 13578 transitions. [2020-10-13 09:11:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-13 09:11:02,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:02,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:02,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:11:02,679 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:02,680 INFO L82 PathProgramCache]: Analyzing trace with hash 99960811, now seen corresponding path program 1 times [2020-10-13 09:11:02,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:02,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344766717] [2020-10-13 09:11:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:11:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:11:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:11:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:11:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:11:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:11:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 09:11:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:11:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 09:11:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:08,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 180 proven. 120 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 09:11:08,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344766717] [2020-10-13 09:11:08,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:08,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:11:08,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092436525] [2020-10-13 09:11:08,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:11:08,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:08,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:11:08,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:08,607 INFO L87 Difference]: Start difference. First operand 11019 states and 13578 transitions. Second operand 6 states. [2020-10-13 09:11:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:17,578 INFO L93 Difference]: Finished difference Result 20558 states and 25547 transitions. [2020-10-13 09:11:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:11:17,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 384 [2020-10-13 09:11:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:17,607 INFO L225 Difference]: With dead ends: 20558 [2020-10-13 09:11:17,607 INFO L226 Difference]: Without dead ends: 11055 [2020-10-13 09:11:17,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:11:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2020-10-13 09:11:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 11021. [2020-10-13 09:11:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11021 states. [2020-10-13 09:11:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 13549 transitions. [2020-10-13 09:11:17,794 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 13549 transitions. Word has length 384 [2020-10-13 09:11:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:17,794 INFO L479 AbstractCegarLoop]: Abstraction has 11021 states and 13549 transitions. [2020-10-13 09:11:17,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:11:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 13549 transitions. [2020-10-13 09:11:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-13 09:11:17,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:17,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:17,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:11:17,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash 351185980, now seen corresponding path program 1 times [2020-10-13 09:11:17,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:17,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106027723] [2020-10-13 09:11:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:22,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:22,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-13 09:11:22,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:11:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:11:22,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:11:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:11:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:11:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:11:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:11:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:11:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 09:11:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 206 proven. 120 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-13 09:11:23,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106027723] [2020-10-13 09:11:23,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:23,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:11:23,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548279533] [2020-10-13 09:11:23,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:11:23,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:11:23,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:23,802 INFO L87 Difference]: Start difference. First operand 11021 states and 13549 transitions. Second operand 6 states. [2020-10-13 09:11:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:29,562 INFO L93 Difference]: Finished difference Result 20561 states and 25492 transitions. [2020-10-13 09:11:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:11:29,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 451 [2020-10-13 09:11:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:29,591 INFO L225 Difference]: With dead ends: 20561 [2020-10-13 09:11:29,592 INFO L226 Difference]: Without dead ends: 11055 [2020-10-13 09:11:29,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:11:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2020-10-13 09:11:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 11019. [2020-10-13 09:11:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11019 states. [2020-10-13 09:11:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11019 states to 11019 states and 13261 transitions. [2020-10-13 09:11:29,786 INFO L78 Accepts]: Start accepts. Automaton has 11019 states and 13261 transitions. Word has length 451 [2020-10-13 09:11:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:29,787 INFO L479 AbstractCegarLoop]: Abstraction has 11019 states and 13261 transitions. [2020-10-13 09:11:29,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:11:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11019 states and 13261 transitions. [2020-10-13 09:11:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-13 09:11:29,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:29,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:29,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:11:29,802 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1520263578, now seen corresponding path program 1 times [2020-10-13 09:11:29,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:29,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301151244] [2020-10-13 09:11:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-13 09:11:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 09:11:34,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 461 [2020-10-13 09:11:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:11:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:35,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:35,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:35,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:35,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:35,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:11:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 09:11:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:11:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 09:11:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-10-13 09:11:35,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301151244] [2020-10-13 09:11:35,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:35,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:35,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969064755] [2020-10-13 09:11:35,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:35,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:35,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:35,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:35,370 INFO L87 Difference]: Start difference. First operand 11019 states and 13261 transitions. Second operand 5 states. [2020-10-13 09:11:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:43,750 INFO L93 Difference]: Finished difference Result 21727 states and 26423 transitions. [2020-10-13 09:11:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:43,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-10-13 09:11:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:43,795 INFO L225 Difference]: With dead ends: 21727 [2020-10-13 09:11:43,795 INFO L226 Difference]: Without dead ends: 12264 [2020-10-13 09:11:43,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2020-10-13 09:11:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 12262. [2020-10-13 09:11:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12262 states. [2020-10-13 09:11:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12262 states to 12262 states and 14644 transitions. [2020-10-13 09:11:44,066 INFO L78 Accepts]: Start accepts. Automaton has 12262 states and 14644 transitions. Word has length 482 [2020-10-13 09:11:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:44,067 INFO L479 AbstractCegarLoop]: Abstraction has 12262 states and 14644 transitions. [2020-10-13 09:11:44,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12262 states and 14644 transitions. [2020-10-13 09:11:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-13 09:11:44,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:44,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:44,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:11:44,091 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1206996445, now seen corresponding path program 1 times [2020-10-13 09:11:44,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:44,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259659246] [2020-10-13 09:11:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:11:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:11:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:11:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:11:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:11:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-13 09:11:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 168 proven. 82 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-13 09:11:50,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259659246] [2020-10-13 09:11:50,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:50,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:11:50,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261025944] [2020-10-13 09:11:50,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:11:50,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:11:50,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:11:50,100 INFO L87 Difference]: Start difference. First operand 12262 states and 14644 transitions. Second operand 7 states. [2020-10-13 09:12:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:06,986 INFO L93 Difference]: Finished difference Result 28100 states and 35081 transitions. [2020-10-13 09:12:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:12:06,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-13 09:12:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:07,046 INFO L225 Difference]: With dead ends: 28100 [2020-10-13 09:12:07,046 INFO L226 Difference]: Without dead ends: 17075 [2020-10-13 09:12:07,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2020-10-13 09:12:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 16933. [2020-10-13 09:12:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16933 states. [2020-10-13 09:12:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16933 states to 16933 states and 20530 transitions. [2020-10-13 09:12:07,447 INFO L78 Accepts]: Start accepts. Automaton has 16933 states and 20530 transitions. Word has length 486 [2020-10-13 09:12:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:07,448 INFO L479 AbstractCegarLoop]: Abstraction has 16933 states and 20530 transitions. [2020-10-13 09:12:07,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 16933 states and 20530 transitions. [2020-10-13 09:12:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-13 09:12:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:07,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:07,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:12:07,469 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:07,469 INFO L82 PathProgramCache]: Analyzing trace with hash -14358255, now seen corresponding path program 1 times [2020-10-13 09:12:07,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:07,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896845957] [2020-10-13 09:12:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:09,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-13 09:12:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-13 09:12:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:12:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:12:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:12:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:10,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:12:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:10,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:12:10,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:12:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:12:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:12:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:12:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 09:12:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 165 proven. 79 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-13 09:12:10,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896845957] [2020-10-13 09:12:10,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:10,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:10,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854753149] [2020-10-13 09:12:10,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:10,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:10,388 INFO L87 Difference]: Start difference. First operand 16933 states and 20530 transitions. Second operand 7 states. [2020-10-13 09:12:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:19,879 INFO L93 Difference]: Finished difference Result 33960 states and 41501 transitions. [2020-10-13 09:12:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:12:19,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-13 09:12:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:19,914 INFO L225 Difference]: With dead ends: 33960 [2020-10-13 09:12:19,915 INFO L226 Difference]: Without dead ends: 17340 [2020-10-13 09:12:19,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17340 states. [2020-10-13 09:12:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17340 to 17328. [2020-10-13 09:12:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2020-10-13 09:12:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 20038 transitions. [2020-10-13 09:12:20,220 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 20038 transitions. Word has length 520 [2020-10-13 09:12:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:20,221 INFO L479 AbstractCegarLoop]: Abstraction has 17328 states and 20038 transitions. [2020-10-13 09:12:20,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 20038 transitions. [2020-10-13 09:12:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-13 09:12:20,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:20,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:12:20,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:12:20,239 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:20,240 INFO L82 PathProgramCache]: Analyzing trace with hash -908893516, now seen corresponding path program 1 times [2020-10-13 09:12:20,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:20,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453971366] [2020-10-13 09:12:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-13 09:12:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:12:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:25,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:12:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:12:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:12:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:12:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:12:25,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:12:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2020-10-13 09:12:25,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453971366] [2020-10-13 09:12:25,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:25,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:25,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647516014] [2020-10-13 09:12:25,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:25,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:25,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:25,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:25,847 INFO L87 Difference]: Start difference. First operand 17328 states and 20038 transitions. Second operand 5 states.