/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/ssh/s3_srvr.blast.12.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:36:21,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:36:21,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:36:21,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:36:21,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:36:21,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:36:21,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:36:21,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:36:21,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:36:21,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:36:21,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:36:21,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:36:21,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:36:21,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:36:21,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:36:21,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:36:21,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:36:21,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:36:21,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:36:21,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:36:21,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:36:21,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:36:21,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:36:21,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:36:21,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:36:21,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:36:21,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:36:21,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:36:21,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:36:21,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:36:21,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:36:21,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:36:21,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:36:21,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:36:21,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:36:21,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:36:21,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:36:21,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:36:21,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:36:21,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:36:21,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:36:21,922 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 15:36:21,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:36:21,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:36:21,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:36:21,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:36:21,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:36:21,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:36:21,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:36:21,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:36:21,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:36:21,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:36:21,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:36:21,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:36:21,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:36:21,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:36:21,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:36:21,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:36:21,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:36:21,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:36:21,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:36:21,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:36:21,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:36:21,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:36:21,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:36:21,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:36:21,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:36:21,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:36:21,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:36:21,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:36:21,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:36:21,971 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 15:36:22,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:36:22,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:36:22,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:36:22,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:36:22,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:36:22,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-1.c [2020-10-13 15:36:22,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952ed450d/c4db643b2ac848a6a67da47ba30a5faf/FLAG3b5af4f9f [2020-10-13 15:36:22,987 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:36:22,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-1.c [2020-10-13 15:36:23,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952ed450d/c4db643b2ac848a6a67da47ba30a5faf/FLAG3b5af4f9f [2020-10-13 15:36:23,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952ed450d/c4db643b2ac848a6a67da47ba30a5faf [2020-10-13 15:36:23,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:36:23,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:36:23,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:36:23,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:36:23,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:36:23,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:36:23" (1/1) ... [2020-10-13 15:36:23,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79133558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:23, skipping insertion in model container [2020-10-13 15:36:23,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:36:23" (1/1) ... [2020-10-13 15:36:23,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:36:23,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:36:23,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:36:23,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:36:24,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:36:24,114 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:36:24,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24 WrapperNode [2020-10-13 15:36:24,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:36:24,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:36:24,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:36:24,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:36:24,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (1/1) ... [2020-10-13 15:36:24,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:36:24,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:36:24,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:36:24,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:36:24,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (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 15:36:24,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:36:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:36:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:36:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:36:24,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:36:24,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:36:24,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:36:24,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:36:24,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:36:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:36:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:36:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:36:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:36:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:36:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:36:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:36:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:36:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:36:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:36:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:36:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:36:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:36:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:36:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:36:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:36:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:36:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:36:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:36:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:36:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:36:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:36:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:36:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:36:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:36:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:36:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:36:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:36:24,905 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:36:25,711 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:36:25,711 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:36:25,739 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:36:25,739 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:36:25,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:36:25 BoogieIcfgContainer [2020-10-13 15:36:25,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:36:25,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:36:25,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:36:25,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:36:25,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:36:23" (1/3) ... [2020-10-13 15:36:25,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eda670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:36:25, skipping insertion in model container [2020-10-13 15:36:25,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:36:24" (2/3) ... [2020-10-13 15:36:25,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eda670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:36:25, skipping insertion in model container [2020-10-13 15:36:25,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:36:25" (3/3) ... [2020-10-13 15:36:25,753 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-1.c [2020-10-13 15:36:25,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:36:25,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:36:25,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:36:25,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:36:25,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:36:25,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:36:25,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:36:25,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:36:25,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:36:25,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:36:25,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:36:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-13 15:36:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:36:25,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:25,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:25,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash -706751833, now seen corresponding path program 1 times [2020-10-13 15:36:25,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:25,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601722741] [2020-10-13 15:36:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 15:36:27,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-13 15:36:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:36:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:36:27,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:27,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:36:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:27,333 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 15:36:27,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601722741] [2020-10-13 15:36:27,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:27,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:27,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385535788] [2020-10-13 15:36:27,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:27,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:27,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:27,361 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 5 states. [2020-10-13 15:36:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:28,347 INFO L93 Difference]: Finished difference Result 337 states and 566 transitions. [2020-10-13 15:36:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:28,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-13 15:36:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:28,364 INFO L225 Difference]: With dead ends: 337 [2020-10-13 15:36:28,365 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 15:36:28,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 15:36:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2020-10-13 15:36:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 15:36:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 236 transitions. [2020-10-13 15:36:28,432 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 236 transitions. Word has length 47 [2020-10-13 15:36:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:28,433 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 236 transitions. [2020-10-13 15:36:28,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 236 transitions. [2020-10-13 15:36:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 15:36:28,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:28,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:28,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:36:28,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:28,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1624282001, now seen corresponding path program 1 times [2020-10-13 15:36:28,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:28,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389714481] [2020-10-13 15:36:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:36:29,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:29,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-13 15:36:29,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:36:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:29,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389714481] [2020-10-13 15:36:29,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:29,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:29,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883593474] [2020-10-13 15:36:29,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:29,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:29,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:29,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:29,631 INFO L87 Difference]: Start difference. First operand 154 states and 236 transitions. Second operand 5 states. [2020-10-13 15:36:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:30,377 INFO L93 Difference]: Finished difference Result 300 states and 457 transitions. [2020-10-13 15:36:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:30,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-13 15:36:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:30,381 INFO L225 Difference]: With dead ends: 300 [2020-10-13 15:36:30,381 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 15:36:30,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 15:36:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2020-10-13 15:36:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 15:36:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 235 transitions. [2020-10-13 15:36:30,398 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 235 transitions. Word has length 60 [2020-10-13 15:36:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:30,398 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 235 transitions. [2020-10-13 15:36:30,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 235 transitions. [2020-10-13 15:36:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:36:30,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:30,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:30,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:36:30,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:30,403 INFO L82 PathProgramCache]: Analyzing trace with hash -621446413, now seen corresponding path program 1 times [2020-10-13 15:36:30,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:30,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443500763] [2020-10-13 15:36:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:36:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:35,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:35,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:36:35,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:35,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443500763] [2020-10-13 15:36:35,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:35,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:35,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508898941] [2020-10-13 15:36:35,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:35,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:35,555 INFO L87 Difference]: Start difference. First operand 154 states and 235 transitions. Second operand 5 states. [2020-10-13 15:36:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:36,259 INFO L93 Difference]: Finished difference Result 299 states and 455 transitions. [2020-10-13 15:36:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:36,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:36:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:36,262 INFO L225 Difference]: With dead ends: 299 [2020-10-13 15:36:36,262 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 15:36:36,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 15:36:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 154. [2020-10-13 15:36:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 15:36:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 234 transitions. [2020-10-13 15:36:36,285 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 234 transitions. Word has length 61 [2020-10-13 15:36:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:36,285 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 234 transitions. [2020-10-13 15:36:36,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 234 transitions. [2020-10-13 15:36:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:36:36,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:36,291 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:36,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:36:36,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:36,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1625068409, now seen corresponding path program 1 times [2020-10-13 15:36:36,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:36,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491669952] [2020-10-13 15:36:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:41,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:41,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 15:36:41,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:41,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:36:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:41,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:41,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:41,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:41,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491669952] [2020-10-13 15:36:41,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:41,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:41,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109208313] [2020-10-13 15:36:41,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:41,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:41,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:41,491 INFO L87 Difference]: Start difference. First operand 154 states and 234 transitions. Second operand 6 states. [2020-10-13 15:36:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:42,133 INFO L93 Difference]: Finished difference Result 293 states and 447 transitions. [2020-10-13 15:36:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:42,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-13 15:36:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:42,136 INFO L225 Difference]: With dead ends: 293 [2020-10-13 15:36:42,138 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:36:42,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:36:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:36:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-13 15:36:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 15:36:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-10-13 15:36:42,162 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 61 [2020-10-13 15:36:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:42,163 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-10-13 15:36:42,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-10-13 15:36:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:36:42,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:42,166 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:42,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:36:42,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:42,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1334335428, now seen corresponding path program 1 times [2020-10-13 15:36:42,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:42,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865800713] [2020-10-13 15:36:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:42,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:42,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:42,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-13 15:36:42,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:43,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:43,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:43,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865800713] [2020-10-13 15:36:43,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:43,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:43,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708372302] [2020-10-13 15:36:43,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:43,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:43,088 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 5 states. [2020-10-13 15:36:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:43,717 INFO L93 Difference]: Finished difference Result 324 states and 485 transitions. [2020-10-13 15:36:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:43,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:36:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:43,719 INFO L225 Difference]: With dead ends: 324 [2020-10-13 15:36:43,719 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 15:36:43,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 15:36:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 163. [2020-10-13 15:36:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 15:36:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-10-13 15:36:43,728 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 61 [2020-10-13 15:36:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:43,729 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-10-13 15:36:43,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-10-13 15:36:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:36:43,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:43,730 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:43,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:36:43,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:43,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1302603453, now seen corresponding path program 1 times [2020-10-13 15:36:43,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:43,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751518292] [2020-10-13 15:36:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-13 15:36:44,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:36:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:44,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:44,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:44,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:44,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751518292] [2020-10-13 15:36:44,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:44,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:44,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440563931] [2020-10-13 15:36:44,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:44,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:44,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:44,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:44,150 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 5 states. [2020-10-13 15:36:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:44,799 INFO L93 Difference]: Finished difference Result 323 states and 483 transitions. [2020-10-13 15:36:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:44,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:36:44,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:44,804 INFO L225 Difference]: With dead ends: 323 [2020-10-13 15:36:44,804 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:36:44,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:36:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-10-13 15:36:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 15:36:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-10-13 15:36:44,820 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 61 [2020-10-13 15:36:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:44,820 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-10-13 15:36:44,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-10-13 15:36:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:36:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:44,824 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:44,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:36:44,824 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:44,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1929646166, now seen corresponding path program 1 times [2020-10-13 15:36:44,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:44,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183538828] [2020-10-13 15:36:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:36:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4154 [2020-10-13 15:36:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:49,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:49,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:36:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:49,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183538828] [2020-10-13 15:36:49,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:49,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:49,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255455785] [2020-10-13 15:36:49,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:49,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:49,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:49,121 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 5 states. [2020-10-13 15:36:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:49,806 INFO L93 Difference]: Finished difference Result 314 states and 471 transitions. [2020-10-13 15:36:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:49,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:36:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:49,811 INFO L225 Difference]: With dead ends: 314 [2020-10-13 15:36:49,811 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 15:36:49,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 15:36:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 163. [2020-10-13 15:36:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 15:36:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-10-13 15:36:49,824 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 62 [2020-10-13 15:36:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:49,826 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-10-13 15:36:49,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-10-13 15:36:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:36:49,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:49,827 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:49,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:36:49,827 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:49,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1981640422, now seen corresponding path program 1 times [2020-10-13 15:36:49,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:49,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970492171] [2020-10-13 15:36:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:36:54,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:36:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:36:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:54,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:54,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970492171] [2020-10-13 15:36:54,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:54,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:54,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870727378] [2020-10-13 15:36:54,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:54,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:54,949 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 6 states. [2020-10-13 15:36:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:56,499 INFO L93 Difference]: Finished difference Result 432 states and 655 transitions. [2020-10-13 15:36:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:56,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 15:36:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:56,502 INFO L225 Difference]: With dead ends: 432 [2020-10-13 15:36:56,502 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 15:36:56,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:36:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 15:36:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 180. [2020-10-13 15:36:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-13 15:36:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 269 transitions. [2020-10-13 15:36:56,514 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 269 transitions. Word has length 62 [2020-10-13 15:36:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:56,514 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 269 transitions. [2020-10-13 15:36:56,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 269 transitions. [2020-10-13 15:36:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:36:56,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:56,515 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:36:56,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:36:56,516 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash -98476681, now seen corresponding path program 1 times [2020-10-13 15:36:56,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:56,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122781253] [2020-10-13 15:36:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2747 [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:59,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:59,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122781253] [2020-10-13 15:36:59,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:59,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:59,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330186635] [2020-10-13 15:36:59,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:59,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:59,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:59,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:59,355 INFO L87 Difference]: Start difference. First operand 180 states and 269 transitions. Second operand 5 states. [2020-10-13 15:37:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:00,159 INFO L93 Difference]: Finished difference Result 348 states and 524 transitions. [2020-10-13 15:37:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:00,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:37:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:00,161 INFO L225 Difference]: With dead ends: 348 [2020-10-13 15:37:00,161 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 15:37:00,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 15:37:00,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-10-13 15:37:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-13 15:37:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 268 transitions. [2020-10-13 15:37:00,170 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 268 transitions. Word has length 63 [2020-10-13 15:37:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:00,170 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 268 transitions. [2020-10-13 15:37:00,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 268 transitions. [2020-10-13 15:37:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:37:00,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:00,172 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:37:00,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:37:00,172 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash -64238740, now seen corresponding path program 1 times [2020-10-13 15:37:00,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:00,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7175399] [2020-10-13 15:37:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:37:05,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:37:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:05,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:37:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:37:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:05,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7175399] [2020-10-13 15:37:05,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:05,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:37:05,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38299345] [2020-10-13 15:37:05,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:37:05,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:05,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:37:05,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:05,290 INFO L87 Difference]: Start difference. First operand 180 states and 268 transitions. Second operand 6 states. [2020-10-13 15:37:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:05,949 INFO L93 Difference]: Finished difference Result 354 states and 530 transitions. [2020-10-13 15:37:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:37:05,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-13 15:37:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:05,952 INFO L225 Difference]: With dead ends: 354 [2020-10-13 15:37:05,952 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:37:05,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:37:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:37:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 180. [2020-10-13 15:37:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-13 15:37:05,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 268 transitions. [2020-10-13 15:37:05,963 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 268 transitions. Word has length 63 [2020-10-13 15:37:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:05,964 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 268 transitions. [2020-10-13 15:37:05,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:37:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 268 transitions. [2020-10-13 15:37:05,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:37:05,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:05,965 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:37:05,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:37:05,965 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:05,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:05,966 INFO L82 PathProgramCache]: Analyzing trace with hash -788566683, now seen corresponding path program 1 times [2020-10-13 15:37:05,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:05,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336432967] [2020-10-13 15:37:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:37:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2512 [2020-10-13 15:37:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:37:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:08,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336432967] [2020-10-13 15:37:08,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:08,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:08,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352236346] [2020-10-13 15:37:08,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:08,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:08,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:08,583 INFO L87 Difference]: Start difference. First operand 180 states and 268 transitions. Second operand 5 states. [2020-10-13 15:37:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:09,300 INFO L93 Difference]: Finished difference Result 348 states and 523 transitions. [2020-10-13 15:37:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:09,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:37:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:09,303 INFO L225 Difference]: With dead ends: 348 [2020-10-13 15:37:09,303 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 15:37:09,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 15:37:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-10-13 15:37:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-13 15:37:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 267 transitions. [2020-10-13 15:37:09,313 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 267 transitions. Word has length 64 [2020-10-13 15:37:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:09,314 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 267 transitions. [2020-10-13 15:37:09,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 267 transitions. [2020-10-13 15:37:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:37:09,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:09,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:09,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:37:09,316 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash -576275258, now seen corresponding path program 1 times [2020-10-13 15:37:09,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:09,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169624707] [2020-10-13 15:37:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:37:09,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 15:37:09,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:37:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:09,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169624707] [2020-10-13 15:37:09,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:09,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:09,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317842927] [2020-10-13 15:37:09,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:09,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:09,675 INFO L87 Difference]: Start difference. First operand 180 states and 267 transitions. Second operand 5 states. [2020-10-13 15:37:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:10,300 INFO L93 Difference]: Finished difference Result 387 states and 582 transitions. [2020-10-13 15:37:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:37:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,304 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:37:10,304 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 15:37:10,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 15:37:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2020-10-13 15:37:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 15:37:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2020-10-13 15:37:10,313 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 64 [2020-10-13 15:37:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,313 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2020-10-13 15:37:10,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2020-10-13 15:37:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:37:10,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,315 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:37:10,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:37:10,315 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash -668096545, now seen corresponding path program 1 times [2020-10-13 15:37:10,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861245462] [2020-10-13 15:37:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:37:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:37:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:15,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:37:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:15,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861245462] [2020-10-13 15:37:15,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:15,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:37:15,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695216834] [2020-10-13 15:37:15,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:37:15,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:15,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:37:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:15,445 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand 6 states. [2020-10-13 15:37:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:16,633 INFO L93 Difference]: Finished difference Result 509 states and 782 transitions. [2020-10-13 15:37:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:37:16,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 15:37:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:16,637 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:37:16,638 INFO L226 Difference]: Without dead ends: 332 [2020-10-13 15:37:16,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:37:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-13 15:37:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 197. [2020-10-13 15:37:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 296 transitions. [2020-10-13 15:37:16,657 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 296 transitions. Word has length 64 [2020-10-13 15:37:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:16,658 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 296 transitions. [2020-10-13 15:37:16,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:37:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 296 transitions. [2020-10-13 15:37:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:37:16,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:16,660 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:37:16,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:37:16,660 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:16,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1966677842, now seen corresponding path program 1 times [2020-10-13 15:37:16,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:16,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363673543] [2020-10-13 15:37:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:37:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3431 [2020-10-13 15:37:20,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:20,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:20,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:20,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363673543] [2020-10-13 15:37:20,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:20,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:20,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111032930] [2020-10-13 15:37:20,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:20,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:20,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:20,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:20,184 INFO L87 Difference]: Start difference. First operand 197 states and 296 transitions. Second operand 5 states. [2020-10-13 15:37:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:20,837 INFO L93 Difference]: Finished difference Result 372 states and 567 transitions. [2020-10-13 15:37:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:20,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:37:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:20,839 INFO L225 Difference]: With dead ends: 372 [2020-10-13 15:37:20,839 INFO L226 Difference]: Without dead ends: 200 [2020-10-13 15:37:20,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-13 15:37:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2020-10-13 15:37:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 295 transitions. [2020-10-13 15:37:20,849 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 295 transitions. Word has length 65 [2020-10-13 15:37:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:20,851 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 295 transitions. [2020-10-13 15:37:20,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 295 transitions. [2020-10-13 15:37:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 15:37:20,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:20,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 15:37:20,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:37:20,852 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:20,853 INFO L82 PathProgramCache]: Analyzing trace with hash -45077328, now seen corresponding path program 1 times [2020-10-13 15:37:20,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:20,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867225909] [2020-10-13 15:37:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 15:37:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:37:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:21,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:21,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867225909] [2020-10-13 15:37:21,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:21,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:21,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037456730] [2020-10-13 15:37:21,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:21,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:21,387 INFO L87 Difference]: Start difference. First operand 197 states and 295 transitions. Second operand 5 states. [2020-10-13 15:37:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:21,974 INFO L93 Difference]: Finished difference Result 390 states and 588 transitions. [2020-10-13 15:37:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:21,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-13 15:37:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:21,976 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:37:21,976 INFO L226 Difference]: Without dead ends: 218 [2020-10-13 15:37:21,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-13 15:37:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2020-10-13 15:37:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 294 transitions. [2020-10-13 15:37:21,988 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 294 transitions. Word has length 77 [2020-10-13 15:37:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:21,988 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 294 transitions. [2020-10-13 15:37:21,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 294 transitions. [2020-10-13 15:37:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:37:21,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:21,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:21,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:37:21,990 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash 376369179, now seen corresponding path program 1 times [2020-10-13 15:37:21,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:21,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71894179] [2020-10-13 15:37:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:22,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:22,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:22,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:22,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71894179] [2020-10-13 15:37:22,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:22,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:22,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767421080] [2020-10-13 15:37:22,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:22,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:22,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:22,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:22,457 INFO L87 Difference]: Start difference. First operand 197 states and 294 transitions. Second operand 5 states. [2020-10-13 15:37:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:23,039 INFO L93 Difference]: Finished difference Result 388 states and 584 transitions. [2020-10-13 15:37:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:23,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:37:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:23,048 INFO L225 Difference]: With dead ends: 388 [2020-10-13 15:37:23,049 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:37:23,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:37:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 197. [2020-10-13 15:37:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 293 transitions. [2020-10-13 15:37:23,058 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 293 transitions. Word has length 78 [2020-10-13 15:37:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:23,058 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 293 transitions. [2020-10-13 15:37:23,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 293 transitions. [2020-10-13 15:37:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:37:23,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:23,059 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:23,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:37:23,060 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:23,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1281659236, now seen corresponding path program 1 times [2020-10-13 15:37:23,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:23,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314403411] [2020-10-13 15:37:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:37:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-13 15:37:23,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:37:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:23,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:23,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314403411] [2020-10-13 15:37:23,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:23,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:23,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992342090] [2020-10-13 15:37:23,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:23,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:23,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:23,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:23,476 INFO L87 Difference]: Start difference. First operand 197 states and 293 transitions. Second operand 5 states. [2020-10-13 15:37:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:24,078 INFO L93 Difference]: Finished difference Result 387 states and 581 transitions. [2020-10-13 15:37:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:24,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:37:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:24,080 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:37:24,080 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 15:37:24,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 15:37:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2020-10-13 15:37:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 292 transitions. [2020-10-13 15:37:24,088 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 292 transitions. Word has length 78 [2020-10-13 15:37:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:24,088 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 292 transitions. [2020-10-13 15:37:24,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 292 transitions. [2020-10-13 15:37:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:37:24,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:24,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 15:37:24,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:37:24,090 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash 610099903, now seen corresponding path program 1 times [2020-10-13 15:37:24,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:24,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929627304] [2020-10-13 15:37:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:37:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:37:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:37:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:29,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929627304] [2020-10-13 15:37:29,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:29,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:29,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078079009] [2020-10-13 15:37:29,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:29,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:29,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:29,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:29,195 INFO L87 Difference]: Start difference. First operand 197 states and 292 transitions. Second operand 5 states. [2020-10-13 15:37:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:29,772 INFO L93 Difference]: Finished difference Result 386 states and 578 transitions. [2020-10-13 15:37:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:29,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:37:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:29,775 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:37:29,775 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:37:29,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:37:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2020-10-13 15:37:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 291 transitions. [2020-10-13 15:37:29,783 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 291 transitions. Word has length 79 [2020-10-13 15:37:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:29,783 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 291 transitions. [2020-10-13 15:37:29,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 291 transitions. [2020-10-13 15:37:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:37:29,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:29,784 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:29,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:37:29,785 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash -437410901, now seen corresponding path program 1 times [2020-10-13 15:37:29,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:29,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76811343] [2020-10-13 15:37:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3222 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:33,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76811343] [2020-10-13 15:37:33,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:33,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:33,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675041653] [2020-10-13 15:37:33,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:33,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:33,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:33,075 INFO L87 Difference]: Start difference. First operand 197 states and 291 transitions. Second operand 5 states. [2020-10-13 15:37:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:33,646 INFO L93 Difference]: Finished difference Result 386 states and 576 transitions. [2020-10-13 15:37:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:33,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:37:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:33,648 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:37:33,648 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:37:33,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:37:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2020-10-13 15:37:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 290 transitions. [2020-10-13 15:37:33,656 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 290 transitions. Word has length 79 [2020-10-13 15:37:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:33,656 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 290 transitions. [2020-10-13 15:37:33,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 290 transitions. [2020-10-13 15:37:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:37:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:33,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:33,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:37:33,658 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1083823722, now seen corresponding path program 1 times [2020-10-13 15:37:33,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:33,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015720715] [2020-10-13 15:37:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:36,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:37:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:36,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015720715] [2020-10-13 15:37:36,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:36,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:36,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186597875] [2020-10-13 15:37:36,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:36,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:36,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:36,862 INFO L87 Difference]: Start difference. First operand 197 states and 290 transitions. Second operand 5 states. [2020-10-13 15:37:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:37,426 INFO L93 Difference]: Finished difference Result 386 states and 574 transitions. [2020-10-13 15:37:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:37,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:37:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:37,428 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:37:37,428 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:37:37,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:37:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2020-10-13 15:37:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 289 transitions. [2020-10-13 15:37:37,436 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 289 transitions. Word has length 80 [2020-10-13 15:37:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:37,436 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 289 transitions. [2020-10-13 15:37:37,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 289 transitions. [2020-10-13 15:37:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:37:37,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:37,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 15:37:37,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:37:37,438 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:37,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1269553882, now seen corresponding path program 1 times [2020-10-13 15:37:37,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:37,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711168739] [2020-10-13 15:37:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:41,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711168739] [2020-10-13 15:37:41,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:41,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:41,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097401470] [2020-10-13 15:37:41,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:41,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:41,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:41,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:41,040 INFO L87 Difference]: Start difference. First operand 197 states and 289 transitions. Second operand 5 states. [2020-10-13 15:37:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:41,598 INFO L93 Difference]: Finished difference Result 386 states and 572 transitions. [2020-10-13 15:37:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:41,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:37:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:41,599 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:37:41,599 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:37:41,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:37:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2020-10-13 15:37:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 288 transitions. [2020-10-13 15:37:41,614 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 288 transitions. Word has length 81 [2020-10-13 15:37:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:41,614 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 288 transitions. [2020-10-13 15:37:41,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 288 transitions. [2020-10-13 15:37:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:37:41,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:41,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:41,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:37:41,616 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash -59023439, now seen corresponding path program 1 times [2020-10-13 15:37:41,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:41,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11337380] [2020-10-13 15:37:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3345 [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:37:45,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11337380] [2020-10-13 15:37:45,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:45,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:45,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965567880] [2020-10-13 15:37:45,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:45,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:45,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:45,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:45,040 INFO L87 Difference]: Start difference. First operand 197 states and 288 transitions. Second operand 5 states. [2020-10-13 15:37:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:45,613 INFO L93 Difference]: Finished difference Result 376 states and 558 transitions. [2020-10-13 15:37:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:45,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:37:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:45,617 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:37:45,617 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 15:37:45,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 15:37:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 197. [2020-10-13 15:37:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:37:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 287 transitions. [2020-10-13 15:37:45,625 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 287 transitions. Word has length 82 [2020-10-13 15:37:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:45,625 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 287 transitions. [2020-10-13 15:37:45,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 287 transitions. [2020-10-13 15:37:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:37:45,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:45,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:37:45,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:37:45,627 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash -330115893, now seen corresponding path program 1 times [2020-10-13 15:37:45,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:45,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591172792] [2020-10-13 15:37:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:37:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:45,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591172792] [2020-10-13 15:37:45,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:45,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:45,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228768920] [2020-10-13 15:37:45,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:45,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:45,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:45,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:45,858 INFO L87 Difference]: Start difference. First operand 197 states and 287 transitions. Second operand 5 states. [2020-10-13 15:37:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:46,672 INFO L93 Difference]: Finished difference Result 478 states and 714 transitions. [2020-10-13 15:37:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:46,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:37:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:46,675 INFO L225 Difference]: With dead ends: 478 [2020-10-13 15:37:46,675 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:37:46,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:37:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 238. [2020-10-13 15:37:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-13 15:37:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 361 transitions. [2020-10-13 15:37:46,685 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 361 transitions. Word has length 86 [2020-10-13 15:37:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:46,685 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 361 transitions. [2020-10-13 15:37:46,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 361 transitions. [2020-10-13 15:37:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:37:46,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:46,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:37:46,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:37:46,687 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:46,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2119484237, now seen corresponding path program 1 times [2020-10-13 15:37:46,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:46,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422650266] [2020-10-13 15:37:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:37:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:46,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422650266] [2020-10-13 15:37:47,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:47,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:47,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777028244] [2020-10-13 15:37:47,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:47,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:47,001 INFO L87 Difference]: Start difference. First operand 238 states and 361 transitions. Second operand 5 states. [2020-10-13 15:37:47,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:47,732 INFO L93 Difference]: Finished difference Result 501 states and 770 transitions. [2020-10-13 15:37:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:47,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:37:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:47,735 INFO L225 Difference]: With dead ends: 501 [2020-10-13 15:37:47,735 INFO L226 Difference]: Without dead ends: 288 [2020-10-13 15:37:47,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-13 15:37:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 262. [2020-10-13 15:37:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-13 15:37:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 403 transitions. [2020-10-13 15:37:47,745 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 403 transitions. Word has length 86 [2020-10-13 15:37:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:47,745 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 403 transitions. [2020-10-13 15:37:47,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 403 transitions. [2020-10-13 15:37:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:37:47,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:47,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:37:47,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:37:47,747 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1651411759, now seen corresponding path program 1 times [2020-10-13 15:37:47,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:47,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234051223] [2020-10-13 15:37:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:47,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:37:47,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 15:37:47,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:37:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:47,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234051223] [2020-10-13 15:37:47,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:47,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:47,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619567272] [2020-10-13 15:37:47,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:47,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:47,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:47,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:47,943 INFO L87 Difference]: Start difference. First operand 262 states and 403 transitions. Second operand 5 states. [2020-10-13 15:37:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:48,735 INFO L93 Difference]: Finished difference Result 561 states and 864 transitions. [2020-10-13 15:37:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:48,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:37:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:48,737 INFO L225 Difference]: With dead ends: 561 [2020-10-13 15:37:48,737 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:37:48,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:37:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 263. [2020-10-13 15:37:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 404 transitions. [2020-10-13 15:37:48,750 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 404 transitions. Word has length 87 [2020-10-13 15:37:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:48,750 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 404 transitions. [2020-10-13 15:37:48,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 404 transitions. [2020-10-13 15:37:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:37:48,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:48,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:37:48,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:37:48,756 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:48,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1516242123, now seen corresponding path program 1 times [2020-10-13 15:37:48,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:48,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820899852] [2020-10-13 15:37:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:49,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:49,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820899852] [2020-10-13 15:37:49,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:49,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:49,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128767018] [2020-10-13 15:37:49,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:49,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:49,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:49,489 INFO L87 Difference]: Start difference. First operand 263 states and 404 transitions. Second operand 5 states. [2020-10-13 15:37:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:50,306 INFO L93 Difference]: Finished difference Result 562 states and 864 transitions. [2020-10-13 15:37:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:50,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:37:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:50,309 INFO L225 Difference]: With dead ends: 562 [2020-10-13 15:37:50,309 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:37:50,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:37:50,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 263. [2020-10-13 15:37:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 403 transitions. [2020-10-13 15:37:50,319 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 403 transitions. Word has length 99 [2020-10-13 15:37:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:50,319 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 403 transitions. [2020-10-13 15:37:50,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 403 transitions. [2020-10-13 15:37:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:37:50,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:50,321 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:37:50,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:37:50,321 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:50,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:50,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1240385143, now seen corresponding path program 1 times [2020-10-13 15:37:50,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:50,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678663399] [2020-10-13 15:37:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:50,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:50,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678663399] [2020-10-13 15:37:50,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:50,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566043216] [2020-10-13 15:37:51,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:51,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:51,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:51,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:51,000 INFO L87 Difference]: Start difference. First operand 263 states and 403 transitions. Second operand 5 states. [2020-10-13 15:37:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:51,701 INFO L93 Difference]: Finished difference Result 527 states and 811 transitions. [2020-10-13 15:37:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:51,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:37:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:51,704 INFO L225 Difference]: With dead ends: 527 [2020-10-13 15:37:51,704 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 15:37:51,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 15:37:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 263. [2020-10-13 15:37:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 402 transitions. [2020-10-13 15:37:51,713 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 402 transitions. Word has length 99 [2020-10-13 15:37:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:51,713 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 402 transitions. [2020-10-13 15:37:51,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 402 transitions. [2020-10-13 15:37:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:51,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:51,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 15:37:51,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:37:51,716 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:51,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1532631904, now seen corresponding path program 1 times [2020-10-13 15:37:51,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:51,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095121141] [2020-10-13 15:37:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:52,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095121141] [2020-10-13 15:37:52,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:52,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:52,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873464845] [2020-10-13 15:37:52,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:52,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:52,585 INFO L87 Difference]: Start difference. First operand 263 states and 402 transitions. Second operand 5 states. [2020-10-13 15:37:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:53,351 INFO L93 Difference]: Finished difference Result 560 states and 858 transitions. [2020-10-13 15:37:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:53,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:53,355 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:37:53,355 INFO L226 Difference]: Without dead ends: 322 [2020-10-13 15:37:53,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-13 15:37:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 263. [2020-10-13 15:37:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 401 transitions. [2020-10-13 15:37:53,368 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 401 transitions. Word has length 100 [2020-10-13 15:37:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:53,369 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 401 transitions. [2020-10-13 15:37:53,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 401 transitions. [2020-10-13 15:37:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:53,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:53,370 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-13 15:37:53,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:37:53,371 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash -125396511, now seen corresponding path program 1 times [2020-10-13 15:37:53,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:53,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784949621] [2020-10-13 15:37:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:54,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784949621] [2020-10-13 15:37:54,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:54,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:54,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904507721] [2020-10-13 15:37:54,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:54,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:54,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:54,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:54,078 INFO L87 Difference]: Start difference. First operand 263 states and 401 transitions. Second operand 5 states. [2020-10-13 15:37:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:55,001 INFO L93 Difference]: Finished difference Result 559 states and 855 transitions. [2020-10-13 15:37:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:55,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:55,005 INFO L225 Difference]: With dead ends: 559 [2020-10-13 15:37:55,005 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:37:55,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:37:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 263. [2020-10-13 15:37:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 400 transitions. [2020-10-13 15:37:55,015 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 400 transitions. Word has length 100 [2020-10-13 15:37:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:55,015 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 400 transitions. [2020-10-13 15:37:55,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 400 transitions. [2020-10-13 15:37:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:55,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:55,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 15:37:55,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:37:55,017 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:55,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1976532578, now seen corresponding path program 1 times [2020-10-13 15:37:55,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:55,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808230388] [2020-10-13 15:37:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:55,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:55,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:55,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:55,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:55,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:55,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808230388] [2020-10-13 15:37:55,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:55,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:55,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612122382] [2020-10-13 15:37:55,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:55,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:55,823 INFO L87 Difference]: Start difference. First operand 263 states and 400 transitions. Second operand 5 states. [2020-10-13 15:37:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:56,523 INFO L93 Difference]: Finished difference Result 525 states and 803 transitions. [2020-10-13 15:37:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:56,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:56,535 INFO L225 Difference]: With dead ends: 525 [2020-10-13 15:37:56,535 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:37:56,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:37:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 263. [2020-10-13 15:37:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 399 transitions. [2020-10-13 15:37:56,544 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 399 transitions. Word has length 100 [2020-10-13 15:37:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:56,544 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 399 transitions. [2020-10-13 15:37:56,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 399 transitions. [2020-10-13 15:37:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:56,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:56,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-13 15:37:56,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:37:56,546 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 318504163, now seen corresponding path program 1 times [2020-10-13 15:37:56,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:56,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772948095] [2020-10-13 15:37:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:57,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772948095] [2020-10-13 15:37:57,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:57,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:57,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986709422] [2020-10-13 15:37:57,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:57,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:57,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:57,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:57,154 INFO L87 Difference]: Start difference. First operand 263 states and 399 transitions. Second operand 5 states. [2020-10-13 15:37:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:57,821 INFO L93 Difference]: Finished difference Result 524 states and 800 transitions. [2020-10-13 15:37:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:57,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:57,825 INFO L225 Difference]: With dead ends: 524 [2020-10-13 15:37:57,825 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:37:57,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:37:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 263. [2020-10-13 15:37:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:37:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 398 transitions. [2020-10-13 15:37:57,834 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 398 transitions. Word has length 100 [2020-10-13 15:37:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:57,835 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 398 transitions. [2020-10-13 15:37:57,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 398 transitions. [2020-10-13 15:37:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:37:57,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:57,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:37:57,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:37:57,836 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2094506010, now seen corresponding path program 1 times [2020-10-13 15:37:57,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:57,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206059483] [2020-10-13 15:37:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:02,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:38:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:38:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:02,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206059483] [2020-10-13 15:38:02,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:02,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:02,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858357159] [2020-10-13 15:38:02,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:02,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:02,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:02,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:02,943 INFO L87 Difference]: Start difference. First operand 263 states and 398 transitions. Second operand 5 states. [2020-10-13 15:38:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:03,753 INFO L93 Difference]: Finished difference Result 558 states and 848 transitions. [2020-10-13 15:38:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:03,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:38:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:03,757 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:38:03,757 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:38:03,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:38:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 263. [2020-10-13 15:38:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 397 transitions. [2020-10-13 15:38:03,766 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 397 transitions. Word has length 101 [2020-10-13 15:38:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:03,767 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 397 transitions. [2020-10-13 15:38:03,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 397 transitions. [2020-10-13 15:38:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:38:03,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:03,768 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:03,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:38:03,769 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:03,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1046995206, now seen corresponding path program 1 times [2020-10-13 15:38:03,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:03,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709931223] [2020-10-13 15:38:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:08,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:08,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:08,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:08,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:08,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709931223] [2020-10-13 15:38:08,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:08,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:08,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472179552] [2020-10-13 15:38:08,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:08,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:08,853 INFO L87 Difference]: Start difference. First operand 263 states and 397 transitions. Second operand 5 states. [2020-10-13 15:38:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:09,669 INFO L93 Difference]: Finished difference Result 558 states and 846 transitions. [2020-10-13 15:38:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:09,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:38:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:09,672 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:38:09,672 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:38:09,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:38:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 263. [2020-10-13 15:38:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 396 transitions. [2020-10-13 15:38:09,685 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 396 transitions. Word has length 101 [2020-10-13 15:38:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:09,686 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 396 transitions. [2020-10-13 15:38:09,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 396 transitions. [2020-10-13 15:38:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:38:09,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:09,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:09,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:38:09,688 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1324442280, now seen corresponding path program 1 times [2020-10-13 15:38:09,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:09,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896050357] [2020-10-13 15:38:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:38:14,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:38:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:14,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896050357] [2020-10-13 15:38:14,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:14,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:14,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947650238] [2020-10-13 15:38:14,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:14,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:14,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:14,773 INFO L87 Difference]: Start difference. First operand 263 states and 396 transitions. Second operand 5 states. [2020-10-13 15:38:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:15,460 INFO L93 Difference]: Finished difference Result 523 states and 793 transitions. [2020-10-13 15:38:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:15,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:38:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:15,463 INFO L225 Difference]: With dead ends: 523 [2020-10-13 15:38:15,464 INFO L226 Difference]: Without dead ends: 285 [2020-10-13 15:38:15,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-13 15:38:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2020-10-13 15:38:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 395 transitions. [2020-10-13 15:38:15,472 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 395 transitions. Word has length 101 [2020-10-13 15:38:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:15,472 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 395 transitions. [2020-10-13 15:38:15,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 395 transitions. [2020-10-13 15:38:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:38:15,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:15,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:15,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:38:15,474 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1923014212, now seen corresponding path program 1 times [2020-10-13 15:38:15,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:15,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109304862] [2020-10-13 15:38:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:38:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4844 [2020-10-13 15:38:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:20,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109304862] [2020-10-13 15:38:20,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:20,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:20,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744786473] [2020-10-13 15:38:20,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:20,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:20,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:20,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:20,400 INFO L87 Difference]: Start difference. First operand 263 states and 395 transitions. Second operand 5 states. [2020-10-13 15:38:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:21,121 INFO L93 Difference]: Finished difference Result 523 states and 791 transitions. [2020-10-13 15:38:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:21,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:38:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:21,124 INFO L225 Difference]: With dead ends: 523 [2020-10-13 15:38:21,124 INFO L226 Difference]: Without dead ends: 285 [2020-10-13 15:38:21,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-13 15:38:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2020-10-13 15:38:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 394 transitions. [2020-10-13 15:38:21,132 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 394 transitions. Word has length 101 [2020-10-13 15:38:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:21,132 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 394 transitions. [2020-10-13 15:38:21,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 394 transitions. [2020-10-13 15:38:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:21,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:21,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:38:21,134 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1983092635, now seen corresponding path program 1 times [2020-10-13 15:38:21,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:21,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996159797] [2020-10-13 15:38:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4777 [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:26,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996159797] [2020-10-13 15:38:26,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:26,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:26,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782459345] [2020-10-13 15:38:26,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:26,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:26,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:26,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:26,002 INFO L87 Difference]: Start difference. First operand 263 states and 394 transitions. Second operand 5 states. [2020-10-13 15:38:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:26,797 INFO L93 Difference]: Finished difference Result 558 states and 840 transitions. [2020-10-13 15:38:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:26,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:26,799 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:38:26,800 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:38:26,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:38:26,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 263. [2020-10-13 15:38:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 393 transitions. [2020-10-13 15:38:26,810 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 393 transitions. Word has length 102 [2020-10-13 15:38:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:26,810 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 393 transitions. [2020-10-13 15:38:26,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 393 transitions. [2020-10-13 15:38:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:26,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:26,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:26,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:38:26,812 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:26,812 INFO L82 PathProgramCache]: Analyzing trace with hash -925089251, now seen corresponding path program 1 times [2020-10-13 15:38:26,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:26,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153128991] [2020-10-13 15:38:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4671 [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:31,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:31,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153128991] [2020-10-13 15:38:31,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:31,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:31,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226448192] [2020-10-13 15:38:31,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:31,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:31,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:31,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:31,579 INFO L87 Difference]: Start difference. First operand 263 states and 393 transitions. Second operand 5 states. [2020-10-13 15:38:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:32,291 INFO L93 Difference]: Finished difference Result 523 states and 787 transitions. [2020-10-13 15:38:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:32,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:32,294 INFO L225 Difference]: With dead ends: 523 [2020-10-13 15:38:32,294 INFO L226 Difference]: Without dead ends: 285 [2020-10-13 15:38:32,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-13 15:38:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2020-10-13 15:38:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 392 transitions. [2020-10-13 15:38:32,302 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 392 transitions. Word has length 102 [2020-10-13 15:38:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:32,303 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 392 transitions. [2020-10-13 15:38:32,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 392 transitions. [2020-10-13 15:38:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:38:32,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:32,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:32,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:38:32,305 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:32,305 INFO L82 PathProgramCache]: Analyzing trace with hash -684427327, now seen corresponding path program 1 times [2020-10-13 15:38:32,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:32,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184447785] [2020-10-13 15:38:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4870 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:37,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:37,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:37,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184447785] [2020-10-13 15:38:37,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:37,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:37,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147812469] [2020-10-13 15:38:37,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:37,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:37,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:37,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:37,259 INFO L87 Difference]: Start difference. First operand 263 states and 392 transitions. Second operand 5 states. [2020-10-13 15:38:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:38,080 INFO L93 Difference]: Finished difference Result 558 states and 836 transitions. [2020-10-13 15:38:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:38,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:38:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:38,083 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:38:38,083 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:38:38,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:38:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 263. [2020-10-13 15:38:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 391 transitions. [2020-10-13 15:38:38,091 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 391 transitions. Word has length 103 [2020-10-13 15:38:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:38,092 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 391 transitions. [2020-10-13 15:38:38,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 391 transitions. [2020-10-13 15:38:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:38:38,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:38,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:38,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:38:38,093 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:38,094 INFO L82 PathProgramCache]: Analyzing trace with hash -643752577, now seen corresponding path program 1 times [2020-10-13 15:38:38,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:38,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847684824] [2020-10-13 15:38:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4789 [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:42,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:42,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:42,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847684824] [2020-10-13 15:38:42,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:42,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:42,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376438675] [2020-10-13 15:38:42,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:42,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:42,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:42,985 INFO L87 Difference]: Start difference. First operand 263 states and 391 transitions. Second operand 5 states. [2020-10-13 15:38:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:43,662 INFO L93 Difference]: Finished difference Result 523 states and 783 transitions. [2020-10-13 15:38:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:43,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:38:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:43,665 INFO L225 Difference]: With dead ends: 523 [2020-10-13 15:38:43,666 INFO L226 Difference]: Without dead ends: 285 [2020-10-13 15:38:43,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-13 15:38:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2020-10-13 15:38:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 390 transitions. [2020-10-13 15:38:43,677 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 390 transitions. Word has length 103 [2020-10-13 15:38:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:43,677 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 390 transitions. [2020-10-13 15:38:43,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 390 transitions. [2020-10-13 15:38:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:38:43,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:43,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:43,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:38:43,679 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash 900030582, now seen corresponding path program 1 times [2020-10-13 15:38:43,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:43,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138766734] [2020-10-13 15:38:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4648 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:48,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:48,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138766734] [2020-10-13 15:38:48,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:48,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:48,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842761515] [2020-10-13 15:38:48,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:48,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:48,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:48,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:48,422 INFO L87 Difference]: Start difference. First operand 263 states and 390 transitions. Second operand 5 states. [2020-10-13 15:38:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:49,190 INFO L93 Difference]: Finished difference Result 548 states and 820 transitions. [2020-10-13 15:38:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:49,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:38:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:49,193 INFO L225 Difference]: With dead ends: 548 [2020-10-13 15:38:49,193 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:38:49,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:38:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2020-10-13 15:38:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 389 transitions. [2020-10-13 15:38:49,201 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 389 transitions. Word has length 104 [2020-10-13 15:38:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:49,202 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 389 transitions. [2020-10-13 15:38:49,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 389 transitions. [2020-10-13 15:38:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:38:49,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:49,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:49,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:38:49,203 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2134019464, now seen corresponding path program 1 times [2020-10-13 15:38:49,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:49,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8598708] [2020-10-13 15:38:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4323 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:53,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8598708] [2020-10-13 15:38:53,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:53,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:53,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424331147] [2020-10-13 15:38:53,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:53,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:53,611 INFO L87 Difference]: Start difference. First operand 263 states and 389 transitions. Second operand 5 states. [2020-10-13 15:38:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:54,283 INFO L93 Difference]: Finished difference Result 513 states and 767 transitions. [2020-10-13 15:38:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:54,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:38:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:54,285 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:38:54,285 INFO L226 Difference]: Without dead ends: 275 [2020-10-13 15:38:54,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-13 15:38:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 263. [2020-10-13 15:38:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 388 transitions. [2020-10-13 15:38:54,293 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 388 transitions. Word has length 104 [2020-10-13 15:38:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:54,293 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 388 transitions. [2020-10-13 15:38:54,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 388 transitions. [2020-10-13 15:38:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:54,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:54,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:54,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:38:54,295 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash -711993506, now seen corresponding path program 1 times [2020-10-13 15:38:54,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:54,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122107976] [2020-10-13 15:38:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:54,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:54,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:54,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122107976] [2020-10-13 15:38:54,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:54,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:54,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861633137] [2020-10-13 15:38:54,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:54,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:54,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:54,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:54,958 INFO L87 Difference]: Start difference. First operand 263 states and 388 transitions. Second operand 5 states. [2020-10-13 15:38:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:55,725 INFO L93 Difference]: Finished difference Result 548 states and 816 transitions. [2020-10-13 15:38:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:55,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:55,728 INFO L225 Difference]: With dead ends: 548 [2020-10-13 15:38:55,728 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:38:55,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:38:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2020-10-13 15:38:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:38:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 387 transitions. [2020-10-13 15:38:55,736 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 387 transitions. Word has length 108 [2020-10-13 15:38:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:55,737 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 387 transitions. [2020-10-13 15:38:55,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 387 transitions. [2020-10-13 15:38:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:55,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:55,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:55,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:38:55,738 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1249581152, now seen corresponding path program 1 times [2020-10-13 15:38:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:55,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428836081] [2020-10-13 15:38:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:56,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 15:38:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:38:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:56,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428836081] [2020-10-13 15:38:56,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:56,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:56,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210679090] [2020-10-13 15:38:56,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:56,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:56,075 INFO L87 Difference]: Start difference. First operand 263 states and 387 transitions. Second operand 5 states. [2020-10-13 15:38:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:56,787 INFO L93 Difference]: Finished difference Result 555 states and 829 transitions. [2020-10-13 15:38:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:56,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:56,790 INFO L225 Difference]: With dead ends: 555 [2020-10-13 15:38:56,791 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:38:56,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:38:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 289. [2020-10-13 15:38:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-13 15:38:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 433 transitions. [2020-10-13 15:38:56,800 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 433 transitions. Word has length 108 [2020-10-13 15:38:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 433 transitions. [2020-10-13 15:38:56,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 433 transitions. [2020-10-13 15:38:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:38:56,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:56,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:38:56,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:38:56,803 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash -627544536, now seen corresponding path program 1 times [2020-10-13 15:38:56,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:56,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534038745] [2020-10-13 15:38:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:57,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534038745] [2020-10-13 15:38:57,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:57,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:57,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94164421] [2020-10-13 15:38:57,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:57,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:57,511 INFO L87 Difference]: Start difference. First operand 289 states and 433 transitions. Second operand 5 states. [2020-10-13 15:38:58,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:58,277 INFO L93 Difference]: Finished difference Result 600 states and 906 transitions. [2020-10-13 15:38:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:58,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:38:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:58,281 INFO L225 Difference]: With dead ends: 600 [2020-10-13 15:38:58,281 INFO L226 Difference]: Without dead ends: 336 [2020-10-13 15:38:58,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-13 15:38:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 289. [2020-10-13 15:38:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-13 15:38:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 432 transitions. [2020-10-13 15:38:58,289 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 432 transitions. Word has length 111 [2020-10-13 15:38:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:58,289 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 432 transitions. [2020-10-13 15:38:58,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 432 transitions. [2020-10-13 15:38:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:58,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:58,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:58,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:38:58,291 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1115908477, now seen corresponding path program 1 times [2020-10-13 15:38:58,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:58,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034271325] [2020-10-13 15:38:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:38:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:58,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034271325] [2020-10-13 15:38:58,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:58,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:58,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028702487] [2020-10-13 15:38:58,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:58,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:58,991 INFO L87 Difference]: Start difference. First operand 289 states and 432 transitions. Second operand 5 states. [2020-10-13 15:38:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:59,832 INFO L93 Difference]: Finished difference Result 621 states and 942 transitions. [2020-10-13 15:38:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:59,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:59,838 INFO L225 Difference]: With dead ends: 621 [2020-10-13 15:38:59,838 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:38:59,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:38:59,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 319. [2020-10-13 15:38:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:38:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 486 transitions. [2020-10-13 15:38:59,847 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 486 transitions. Word has length 112 [2020-10-13 15:38:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:59,847 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 486 transitions. [2020-10-13 15:38:59,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 486 transitions. [2020-10-13 15:38:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:59,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:38:59,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:38:59,849 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash -347215736, now seen corresponding path program 1 times [2020-10-13 15:38:59,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:59,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233795005] [2020-10-13 15:38:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:00,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:39:00,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-13 15:39:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:39:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:00,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233795005] [2020-10-13 15:39:00,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:00,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:00,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303900868] [2020-10-13 15:39:00,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:00,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:00,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:00,566 INFO L87 Difference]: Start difference. First operand 319 states and 486 transitions. Second operand 5 states. [2020-10-13 15:39:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:01,359 INFO L93 Difference]: Finished difference Result 660 states and 1012 transitions. [2020-10-13 15:39:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:01,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:39:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:01,363 INFO L225 Difference]: With dead ends: 660 [2020-10-13 15:39:01,363 INFO L226 Difference]: Without dead ends: 366 [2020-10-13 15:39:01,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-13 15:39:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 319. [2020-10-13 15:39:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 485 transitions. [2020-10-13 15:39:01,370 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 485 transitions. Word has length 113 [2020-10-13 15:39:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:01,371 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 485 transitions. [2020-10-13 15:39:01,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 485 transitions. [2020-10-13 15:39:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:39:01,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:01,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:01,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:39:01,372 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:01,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1681836275, now seen corresponding path program 1 times [2020-10-13 15:39:01,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:01,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551988070] [2020-10-13 15:39:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:39:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4125 [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:39:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:05,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551988070] [2020-10-13 15:39:05,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:05,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:05,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405570920] [2020-10-13 15:39:05,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:05,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:05,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:05,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:05,590 INFO L87 Difference]: Start difference. First operand 319 states and 485 transitions. Second operand 5 states. [2020-10-13 15:39:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:06,372 INFO L93 Difference]: Finished difference Result 660 states and 1010 transitions. [2020-10-13 15:39:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:06,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:39:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:06,375 INFO L225 Difference]: With dead ends: 660 [2020-10-13 15:39:06,375 INFO L226 Difference]: Without dead ends: 366 [2020-10-13 15:39:06,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-13 15:39:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 319. [2020-10-13 15:39:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 484 transitions. [2020-10-13 15:39:06,384 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 484 transitions. Word has length 114 [2020-10-13 15:39:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:06,385 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 484 transitions. [2020-10-13 15:39:06,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 484 transitions. [2020-10-13 15:39:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:39:06,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:06,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:39:06,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:39:06,386 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1998450173, now seen corresponding path program 1 times [2020-10-13 15:39:06,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:06,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061915285] [2020-10-13 15:39:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:39:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:07,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061915285] [2020-10-13 15:39:07,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:07,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:07,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012510410] [2020-10-13 15:39:07,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:07,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:07,121 INFO L87 Difference]: Start difference. First operand 319 states and 484 transitions. Second operand 5 states. [2020-10-13 15:39:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:07,907 INFO L93 Difference]: Finished difference Result 658 states and 1006 transitions. [2020-10-13 15:39:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:07,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:39:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:07,909 INFO L225 Difference]: With dead ends: 658 [2020-10-13 15:39:07,909 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:39:07,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:39:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 319. [2020-10-13 15:39:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 483 transitions. [2020-10-13 15:39:07,916 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 483 transitions. Word has length 114 [2020-10-13 15:39:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:07,916 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 483 transitions. [2020-10-13 15:39:07,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 483 transitions. [2020-10-13 15:39:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:39:07,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:07,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:07,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:39:07,918 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:07,918 INFO L82 PathProgramCache]: Analyzing trace with hash 628054238, now seen corresponding path program 1 times [2020-10-13 15:39:07,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:07,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257921357] [2020-10-13 15:39:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:11,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3816 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:39:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:11,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:11,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257921357] [2020-10-13 15:39:11,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:11,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:11,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52334314] [2020-10-13 15:39:11,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:11,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:11,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:11,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:11,819 INFO L87 Difference]: Start difference. First operand 319 states and 483 transitions. Second operand 5 states. [2020-10-13 15:39:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:12,573 INFO L93 Difference]: Finished difference Result 656 states and 1001 transitions. [2020-10-13 15:39:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:12,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:39:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:12,576 INFO L225 Difference]: With dead ends: 656 [2020-10-13 15:39:12,576 INFO L226 Difference]: Without dead ends: 362 [2020-10-13 15:39:12,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-13 15:39:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 319. [2020-10-13 15:39:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 482 transitions. [2020-10-13 15:39:12,584 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 482 transitions. Word has length 115 [2020-10-13 15:39:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:12,585 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 482 transitions. [2020-10-13 15:39:12,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 482 transitions. [2020-10-13 15:39:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:39:12,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:12,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:39:12,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:39:12,587 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1708805210, now seen corresponding path program 1 times [2020-10-13 15:39:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188461584] [2020-10-13 15:39:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:39:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 15:39:12,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:39:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:12,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188461584] [2020-10-13 15:39:12,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:12,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:12,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235370695] [2020-10-13 15:39:12,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:12,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:12,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:12,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:12,856 INFO L87 Difference]: Start difference. First operand 319 states and 482 transitions. Second operand 5 states. [2020-10-13 15:39:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:13,601 INFO L93 Difference]: Finished difference Result 653 states and 995 transitions. [2020-10-13 15:39:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:13,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:39:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:13,603 INFO L225 Difference]: With dead ends: 653 [2020-10-13 15:39:13,603 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 15:39:13,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 15:39:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-10-13 15:39:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 481 transitions. [2020-10-13 15:39:13,610 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 481 transitions. Word has length 115 [2020-10-13 15:39:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:13,611 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 481 transitions. [2020-10-13 15:39:13,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 481 transitions. [2020-10-13 15:39:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:39:13,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:13,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:13,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:39:13,612 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash -919168264, now seen corresponding path program 1 times [2020-10-13 15:39:13,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:13,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292840401] [2020-10-13 15:39:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3224 [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:39:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:16,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292840401] [2020-10-13 15:39:16,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:16,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:16,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530043436] [2020-10-13 15:39:16,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:16,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:16,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:16,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:16,935 INFO L87 Difference]: Start difference. First operand 319 states and 481 transitions. Second operand 5 states. [2020-10-13 15:39:17,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:17,663 INFO L93 Difference]: Finished difference Result 645 states and 980 transitions. [2020-10-13 15:39:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:17,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:39:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:17,667 INFO L225 Difference]: With dead ends: 645 [2020-10-13 15:39:17,667 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 15:39:17,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 15:39:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 319. [2020-10-13 15:39:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:39:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 480 transitions. [2020-10-13 15:39:17,676 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 480 transitions. Word has length 118 [2020-10-13 15:39:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:17,677 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 480 transitions. [2020-10-13 15:39:17,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 480 transitions. [2020-10-13 15:39:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:39:17,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:17,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 15:39:17,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:39:17,678 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2106342423, now seen corresponding path program 1 times [2020-10-13 15:39:17,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:17,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865818759] [2020-10-13 15:39:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:18,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:39:18,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-13 15:39:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:39:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:39:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:18,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865818759] [2020-10-13 15:39:18,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:18,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:18,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035614299] [2020-10-13 15:39:18,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:18,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:18,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:18,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:18,942 INFO L87 Difference]: Start difference. First operand 319 states and 480 transitions. Second operand 5 states. [2020-10-13 15:39:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:19,616 INFO L93 Difference]: Finished difference Result 651 states and 989 transitions. [2020-10-13 15:39:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:19,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:39:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:19,619 INFO L225 Difference]: With dead ends: 651 [2020-10-13 15:39:19,620 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:39:19,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:39:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 340. [2020-10-13 15:39:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:39:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 516 transitions. [2020-10-13 15:39:19,626 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 516 transitions. Word has length 118 [2020-10-13 15:39:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:19,626 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 516 transitions. [2020-10-13 15:39:19,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 516 transitions. [2020-10-13 15:39:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:19,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:19,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:39:19,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:39:19,628 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2144645640, now seen corresponding path program 1 times [2020-10-13 15:39:19,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:19,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679206354] [2020-10-13 15:39:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:39:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:20,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679206354] [2020-10-13 15:39:20,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:20,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:20,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284264790] [2020-10-13 15:39:20,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:20,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:20,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:20,631 INFO L87 Difference]: Start difference. First operand 340 states and 516 transitions. Second operand 5 states. [2020-10-13 15:39:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:21,340 INFO L93 Difference]: Finished difference Result 687 states and 1050 transitions. [2020-10-13 15:39:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:21,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:21,342 INFO L225 Difference]: With dead ends: 687 [2020-10-13 15:39:21,343 INFO L226 Difference]: Without dead ends: 372 [2020-10-13 15:39:21,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-13 15:39:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 340. [2020-10-13 15:39:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:39:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 515 transitions. [2020-10-13 15:39:21,349 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 515 transitions. Word has length 119 [2020-10-13 15:39:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:21,349 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 515 transitions. [2020-10-13 15:39:21,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 515 transitions. [2020-10-13 15:39:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:21,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:21,350 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:39:21,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:39:21,350 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 316286317, now seen corresponding path program 1 times [2020-10-13 15:39:21,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:21,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069433966] [2020-10-13 15:39:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:22,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-13 15:39:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:39:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:22,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:22,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069433966] [2020-10-13 15:39:22,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:22,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455776136] [2020-10-13 15:39:22,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:22,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:22,478 INFO L87 Difference]: Start difference. First operand 340 states and 515 transitions. Second operand 5 states. [2020-10-13 15:39:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:23,190 INFO L93 Difference]: Finished difference Result 687 states and 1048 transitions. [2020-10-13 15:39:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:23,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:23,192 INFO L225 Difference]: With dead ends: 687 [2020-10-13 15:39:23,192 INFO L226 Difference]: Without dead ends: 372 [2020-10-13 15:39:23,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-13 15:39:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 340. [2020-10-13 15:39:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:39:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 514 transitions. [2020-10-13 15:39:23,200 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 514 transitions. Word has length 120 [2020-10-13 15:39:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:23,200 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 514 transitions. [2020-10-13 15:39:23,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 514 transitions. [2020-10-13 15:39:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:23,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:23,201 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:39:23,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:39:23,202 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash -830435982, now seen corresponding path program 1 times [2020-10-13 15:39:23,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:23,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484955397] [2020-10-13 15:39:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:39:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:39:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:24,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:24,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484955397] [2020-10-13 15:39:24,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:24,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:24,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443952700] [2020-10-13 15:39:24,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:24,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:24,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:24,193 INFO L87 Difference]: Start difference. First operand 340 states and 514 transitions. Second operand 5 states. [2020-10-13 15:39:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:25,026 INFO L93 Difference]: Finished difference Result 745 states and 1141 transitions. [2020-10-13 15:39:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:25,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:25,029 INFO L225 Difference]: With dead ends: 745 [2020-10-13 15:39:25,029 INFO L226 Difference]: Without dead ends: 430 [2020-10-13 15:39:25,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-13 15:39:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 377. [2020-10-13 15:39:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 15:39:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 582 transitions. [2020-10-13 15:39:25,036 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 582 transitions. Word has length 120 [2020-10-13 15:39:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:25,036 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 582 transitions. [2020-10-13 15:39:25,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 582 transitions. [2020-10-13 15:39:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:25,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:25,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:39:25,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:39:25,037 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:25,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1665674768, now seen corresponding path program 1 times [2020-10-13 15:39:25,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:25,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898641497] [2020-10-13 15:39:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:39:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:25,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:25,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:25,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898641497] [2020-10-13 15:39:25,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:25,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:25,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000025078] [2020-10-13 15:39:25,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:25,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:25,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:25,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:25,460 INFO L87 Difference]: Start difference. First operand 377 states and 582 transitions. Second operand 5 states. [2020-10-13 15:39:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:26,215 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2020-10-13 15:39:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:26,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:26,217 INFO L225 Difference]: With dead ends: 761 [2020-10-13 15:39:26,218 INFO L226 Difference]: Without dead ends: 409 [2020-10-13 15:39:26,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-13 15:39:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 377. [2020-10-13 15:39:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 15:39:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2020-10-13 15:39:26,227 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 121 [2020-10-13 15:39:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:26,227 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2020-10-13 15:39:26,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2020-10-13 15:39:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:26,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:26,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:26,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:39:26,228 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash -269770285, now seen corresponding path program 1 times [2020-10-13 15:39:26,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:26,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389973288] [2020-10-13 15:39:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:39:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:27,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389973288] [2020-10-13 15:39:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:27,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:27,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606138971] [2020-10-13 15:39:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:27,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:27,282 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand 5 states. [2020-10-13 15:39:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:28,238 INFO L93 Difference]: Finished difference Result 814 states and 1267 transitions. [2020-10-13 15:39:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:28,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:28,241 INFO L225 Difference]: With dead ends: 814 [2020-10-13 15:39:28,242 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:39:28,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:39:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 412. [2020-10-13 15:39:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 645 transitions. [2020-10-13 15:39:28,250 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 645 transitions. Word has length 121 [2020-10-13 15:39:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:28,251 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 645 transitions. [2020-10-13 15:39:28,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 645 transitions. [2020-10-13 15:39:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:28,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:28,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:39:28,252 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1089275050, now seen corresponding path program 1 times [2020-10-13 15:39:28,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:28,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139274145] [2020-10-13 15:39:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:29,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:29,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:39:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:29,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:29,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139274145] [2020-10-13 15:39:29,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:29,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:29,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327862436] [2020-10-13 15:39:29,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:29,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:29,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:29,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:29,067 INFO L87 Difference]: Start difference. First operand 412 states and 645 transitions. Second operand 5 states. [2020-10-13 15:39:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:29,750 INFO L93 Difference]: Finished difference Result 827 states and 1298 transitions. [2020-10-13 15:39:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:29,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:29,753 INFO L225 Difference]: With dead ends: 827 [2020-10-13 15:39:29,753 INFO L226 Difference]: Without dead ends: 440 [2020-10-13 15:39:29,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-13 15:39:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 412. [2020-10-13 15:39:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 644 transitions. [2020-10-13 15:39:29,762 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 644 transitions. Word has length 121 [2020-10-13 15:39:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 644 transitions. [2020-10-13 15:39:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 644 transitions. [2020-10-13 15:39:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:39:29,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:29,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:29,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:39:29,765 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:29,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1898579062, now seen corresponding path program 1 times [2020-10-13 15:39:29,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:29,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663057421] [2020-10-13 15:39:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:30,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:39:30,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-13 15:39:30,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:39:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:30,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663057421] [2020-10-13 15:39:30,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:30,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:30,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006037832] [2020-10-13 15:39:30,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:30,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:30,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:30,205 INFO L87 Difference]: Start difference. First operand 412 states and 644 transitions. Second operand 5 states. [2020-10-13 15:39:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:30,954 INFO L93 Difference]: Finished difference Result 828 states and 1302 transitions. [2020-10-13 15:39:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:30,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:39:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:30,957 INFO L225 Difference]: With dead ends: 828 [2020-10-13 15:39:30,957 INFO L226 Difference]: Without dead ends: 441 [2020-10-13 15:39:30,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-13 15:39:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 412. [2020-10-13 15:39:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 643 transitions. [2020-10-13 15:39:30,964 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 643 transitions. Word has length 122 [2020-10-13 15:39:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:30,964 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 643 transitions. [2020-10-13 15:39:30,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 643 transitions. [2020-10-13 15:39:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:39:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:30,966 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:30,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:39:30,966 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1928989131, now seen corresponding path program 1 times [2020-10-13 15:39:30,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:30,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248486721] [2020-10-13 15:39:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:39:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-13 15:39:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:39:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:31,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248486721] [2020-10-13 15:39:31,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:31,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:31,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014208909] [2020-10-13 15:39:31,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:31,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:31,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:31,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:31,623 INFO L87 Difference]: Start difference. First operand 412 states and 643 transitions. Second operand 5 states. [2020-10-13 15:39:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:32,303 INFO L93 Difference]: Finished difference Result 825 states and 1292 transitions. [2020-10-13 15:39:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:32,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:39:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:32,306 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:39:32,306 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:39:32,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:39:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:39:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 642 transitions. [2020-10-13 15:39:32,313 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 642 transitions. Word has length 122 [2020-10-13 15:39:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:32,314 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 642 transitions. [2020-10-13 15:39:32,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 642 transitions. [2020-10-13 15:39:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:39:32,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:32,315 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:32,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:39:32,315 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 707949750, now seen corresponding path program 1 times [2020-10-13 15:39:32,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:32,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356728394] [2020-10-13 15:39:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:32,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356728394] [2020-10-13 15:39:32,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:32,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:32,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220225066] [2020-10-13 15:39:32,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:32,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:32,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:32,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:32,779 INFO L87 Difference]: Start difference. First operand 412 states and 642 transitions. Second operand 5 states. [2020-10-13 15:39:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:33,464 INFO L93 Difference]: Finished difference Result 824 states and 1289 transitions. [2020-10-13 15:39:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:33,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:39:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:33,467 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:39:33,467 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:39:33,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:39:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:39:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 641 transitions. [2020-10-13 15:39:33,474 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 641 transitions. Word has length 122 [2020-10-13 15:39:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:33,474 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 641 transitions. [2020-10-13 15:39:33,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 641 transitions. [2020-10-13 15:39:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:39:33,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:33,475 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:33,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:39:33,476 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2136530971, now seen corresponding path program 1 times [2020-10-13 15:39:33,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:33,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41615668] [2020-10-13 15:39:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:39:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:38,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:38,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41615668] [2020-10-13 15:39:38,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:38,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:38,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827467317] [2020-10-13 15:39:38,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:38,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:38,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:38,565 INFO L87 Difference]: Start difference. First operand 412 states and 641 transitions. Second operand 5 states. [2020-10-13 15:39:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:39,254 INFO L93 Difference]: Finished difference Result 823 states and 1286 transitions. [2020-10-13 15:39:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:39,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:39:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:39,258 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:39:39,258 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:39:39,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:39:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:39:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 640 transitions. [2020-10-13 15:39:39,265 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 640 transitions. Word has length 123 [2020-10-13 15:39:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:39,266 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 640 transitions. [2020-10-13 15:39:39,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 640 transitions. [2020-10-13 15:39:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:39:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:39,267 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:39,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:39:39,267 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1110925521, now seen corresponding path program 1 times [2020-10-13 15:39:39,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:39,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595019297] [2020-10-13 15:39:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:44,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:44,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:44,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595019297] [2020-10-13 15:39:44,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:44,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570868345] [2020-10-13 15:39:44,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:44,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:44,356 INFO L87 Difference]: Start difference. First operand 412 states and 640 transitions. Second operand 5 states. [2020-10-13 15:39:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:45,009 INFO L93 Difference]: Finished difference Result 823 states and 1284 transitions. [2020-10-13 15:39:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:45,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:39:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:45,017 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:39:45,018 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:39:45,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:39:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:39:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 639 transitions. [2020-10-13 15:39:45,028 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 639 transitions. Word has length 123 [2020-10-13 15:39:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:45,028 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 639 transitions. [2020-10-13 15:39:45,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 639 transitions. [2020-10-13 15:39:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:39:45,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:45,031 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:45,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:39:45,031 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash -330034896, now seen corresponding path program 1 times [2020-10-13 15:39:45,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:45,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683523135] [2020-10-13 15:39:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:39:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4987 [2020-10-13 15:39:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:50,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:50,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:50,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683523135] [2020-10-13 15:39:50,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:50,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:50,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392908992] [2020-10-13 15:39:50,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:50,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:50,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:50,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:50,108 INFO L87 Difference]: Start difference. First operand 412 states and 639 transitions. Second operand 5 states. [2020-10-13 15:39:50,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:50,774 INFO L93 Difference]: Finished difference Result 823 states and 1282 transitions. [2020-10-13 15:39:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:50,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:39:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:50,778 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:39:50,778 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:39:50,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:39:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:39:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 638 transitions. [2020-10-13 15:39:50,787 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 638 transitions. Word has length 124 [2020-10-13 15:39:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:50,788 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 638 transitions. [2020-10-13 15:39:50,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 638 transitions. [2020-10-13 15:39:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:39:50,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:50,789 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:50,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:39:50,790 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash 623063244, now seen corresponding path program 1 times [2020-10-13 15:39:50,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:50,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749705177] [2020-10-13 15:39:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:55,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:55,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:39:55,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:39:55,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:55,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749705177] [2020-10-13 15:39:55,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:55,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:55,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484058087] [2020-10-13 15:39:55,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:55,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:55,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:55,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:55,882 INFO L87 Difference]: Start difference. First operand 412 states and 638 transitions. Second operand 5 states. [2020-10-13 15:39:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:56,570 INFO L93 Difference]: Finished difference Result 823 states and 1280 transitions. [2020-10-13 15:39:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:56,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:39:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:56,573 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:39:56,574 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:39:56,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:39:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:39:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:39:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 637 transitions. [2020-10-13 15:39:56,581 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 637 transitions. Word has length 125 [2020-10-13 15:39:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:56,582 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 637 transitions. [2020-10-13 15:39:56,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 637 transitions. [2020-10-13 15:39:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:39:56,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:56,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:56,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:39:56,583 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:56,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1517434677, now seen corresponding path program 1 times [2020-10-13 15:39:56,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:56,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172692487] [2020-10-13 15:39:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:01,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:40:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:01,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:01,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172692487] [2020-10-13 15:40:01,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:01,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:01,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327659932] [2020-10-13 15:40:01,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:01,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:01,679 INFO L87 Difference]: Start difference. First operand 412 states and 637 transitions. Second operand 5 states. [2020-10-13 15:40:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:02,328 INFO L93 Difference]: Finished difference Result 813 states and 1266 transitions. [2020-10-13 15:40:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:02,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:40:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:02,331 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:40:02,331 INFO L226 Difference]: Without dead ends: 426 [2020-10-13 15:40:02,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-13 15:40:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 412. [2020-10-13 15:40:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:40:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 636 transitions. [2020-10-13 15:40:02,339 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 636 transitions. Word has length 126 [2020-10-13 15:40:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:02,339 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 636 transitions. [2020-10-13 15:40:02,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 636 transitions. [2020-10-13 15:40:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:40:02,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:02,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:40:02,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:40:02,340 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash -595497319, now seen corresponding path program 1 times [2020-10-13 15:40:02,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:02,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018871878] [2020-10-13 15:40:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:40:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:02,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:02,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:02,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018871878] [2020-10-13 15:40:02,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:02,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:02,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569602578] [2020-10-13 15:40:02,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:02,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:02,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:02,689 INFO L87 Difference]: Start difference. First operand 412 states and 636 transitions. Second operand 5 states. [2020-10-13 15:40:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:03,635 INFO L93 Difference]: Finished difference Result 906 states and 1410 transitions. [2020-10-13 15:40:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:03,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:40:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:03,638 INFO L225 Difference]: With dead ends: 906 [2020-10-13 15:40:03,639 INFO L226 Difference]: Without dead ends: 519 [2020-10-13 15:40:03,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-13 15:40:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 451. [2020-10-13 15:40:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-10-13 15:40:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 708 transitions. [2020-10-13 15:40:03,646 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 708 transitions. Word has length 127 [2020-10-13 15:40:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:03,647 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 708 transitions. [2020-10-13 15:40:03,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 708 transitions. [2020-10-13 15:40:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:40:03,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:03,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:40:03,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:40:03,648 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:03,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1288301373, now seen corresponding path program 1 times [2020-10-13 15:40:03,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:03,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823837584] [2020-10-13 15:40:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:40:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:04,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823837584] [2020-10-13 15:40:04,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:04,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:04,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747095350] [2020-10-13 15:40:04,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:04,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:04,018 INFO L87 Difference]: Start difference. First operand 451 states and 708 transitions. Second operand 5 states. [2020-10-13 15:40:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:05,011 INFO L93 Difference]: Finished difference Result 939 states and 1474 transitions. [2020-10-13 15:40:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:05,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:40:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:05,014 INFO L225 Difference]: With dead ends: 939 [2020-10-13 15:40:05,014 INFO L226 Difference]: Without dead ends: 513 [2020-10-13 15:40:05,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-13 15:40:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 450. [2020-10-13 15:40:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-13 15:40:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 707 transitions. [2020-10-13 15:40:05,023 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 707 transitions. Word has length 128 [2020-10-13 15:40:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:05,023 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 707 transitions. [2020-10-13 15:40:05,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 707 transitions. [2020-10-13 15:40:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:40:05,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:05,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 15:40:05,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:40:05,024 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:05,025 INFO L82 PathProgramCache]: Analyzing trace with hash -640562205, now seen corresponding path program 1 times [2020-10-13 15:40:05,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:05,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713138698] [2020-10-13 15:40:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking...