/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.09.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:02:40,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:02:40,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:02:40,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:02:40,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:02:40,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:02:40,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:02:40,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:02:40,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:02:40,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:02:40,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:02:40,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:02:40,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:02:40,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:02:40,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:02:40,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:02:40,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:02:40,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:02:40,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:02:40,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:02:40,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:02:40,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:02:40,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:02:40,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:02:40,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:02:40,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:02:40,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:02:40,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:02:40,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:02:40,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:02:40,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:02:40,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:02:40,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:02:40,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:02:40,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:02:40,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:02:40,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:02:40,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:02:40,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:02:40,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:02:40,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:02:40,927 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 [2020-10-14 10:02:40,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:02:40,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:02:40,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:02:40,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:02:40,960 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:02:40,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:02:40,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:02:40,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:02:40,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:02:40,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:02:40,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:02:40,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:02:40,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:02:40,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:02:40,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:02:40,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:02:40,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:02:40,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:02:40,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:02:40,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:02:40,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:02:40,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:02:40,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:02:40,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:02:40,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:02:40,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:02:40,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:02:40,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:02:40,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:02:40,966 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:02:41,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:02:41,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:02:41,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:02:41,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:02:41,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:02:41,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-1.c [2020-10-14 10:02:41,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e3dee/6491c07b93b44e3c9b1a63a597417ea8/FLAG623144404 [2020-10-14 10:02:42,033 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:02:42,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-1.c [2020-10-14 10:02:42,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e3dee/6491c07b93b44e3c9b1a63a597417ea8/FLAG623144404 [2020-10-14 10:02:42,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e3dee/6491c07b93b44e3c9b1a63a597417ea8 [2020-10-14 10:02:42,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:02:42,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:02:42,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:02:42,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:02:42,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:02:42,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:42" (1/1) ... [2020-10-14 10:02:42,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fec6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:42, skipping insertion in model container [2020-10-14 10:02:42,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:42" (1/1) ... [2020-10-14 10:02:42,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:02:42,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:02:43,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:02:43,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:02:43,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:02:43,240 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:02:43,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43 WrapperNode [2020-10-14 10:02:43,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:02:43,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:02:43,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:02:43,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:02:43,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (1/1) ... [2020-10-14 10:02:43,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:02:43,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:02:43,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:02:43,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:02:43,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (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 [2020-10-14 10:02:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:02:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:02:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:02:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:02:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:02:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:02:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:02:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:02:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:02:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:02:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:02:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:02:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:02:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:02:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:02:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:02:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:02:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:02:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:02:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:02:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:02:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:02:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:02:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:02:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:02:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:02:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:02:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:02:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:02:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:02:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:02:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:02:43,968 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:02:44,629 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:02:44,630 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:02:44,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:02:44,654 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:02:44,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:44 BoogieIcfgContainer [2020-10-14 10:02:44,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:02:44,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:02:44,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:02:44,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:02:44,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:02:42" (1/3) ... [2020-10-14 10:02:44,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c601a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:44, skipping insertion in model container [2020-10-14 10:02:44,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:43" (2/3) ... [2020-10-14 10:02:44,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c601a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:44, skipping insertion in model container [2020-10-14 10:02:44,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:44" (3/3) ... [2020-10-14 10:02:44,668 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.09.i.cil-1.c [2020-10-14 10:02:44,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:02:44,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:02:44,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:02:44,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:02:44,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:02:44,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:02:44,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:02:44,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:02:44,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:02:44,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:02:44,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:02:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:02:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:02:44,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:44,767 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] [2020-10-14 10:02:44,768 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-14 10:02:44,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:44,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524980918] [2020-10-14 10:02:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:46,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:02:46,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-14 10:02:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:46,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:02:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:02:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:02:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:46,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:46,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:02:46,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:46,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:02:46,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524980918] [2020-10-14 10:02:46,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:46,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:46,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420415003] [2020-10-14 10:02:46,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:46,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:46,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:46,510 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:02:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:47,292 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:02:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:02:47,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:02:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:47,309 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:02:47,310 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:02:47,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:02:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:02:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:02:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:02:47,382 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:02:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:47,383 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:02:47,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:02:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:02:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:02:47,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:47,388 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] [2020-10-14 10:02:47,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:02:47,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:47,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-14 10:02:47,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:47,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566578936] [2020-10-14 10:02:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:02:48,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-14 10:02:48,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:48,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:02:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:02:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:48,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:02:48,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:48,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:02:48,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566578936] [2020-10-14 10:02:48,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:48,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:48,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463994314] [2020-10-14 10:02:48,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:48,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:48,587 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:02:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:49,171 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:02:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:02:49,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:02:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:49,175 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:02:49,176 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:02:49,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:49,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:02:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:02:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:02:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:02:49,219 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:02:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:49,219 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:02:49,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:02:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:02:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:02:49,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:49,231 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] [2020-10-14 10:02:49,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:02:49,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-14 10:02:49,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:49,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879251941] [2020-10-14 10:02:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:49,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:02:49,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:02:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-14 10:02:49,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:49,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:02:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:02:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:49,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:02:49,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879251941] [2020-10-14 10:02:49,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:49,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:49,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055188768] [2020-10-14 10:02:49,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:49,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:49,904 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:02:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:50,421 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:02:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:02:50,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:02:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:50,425 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:02:50,425 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:02:50,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:02:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:02:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:02:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:02:50,444 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:02:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:50,445 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:02:50,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:02:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:02:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:02:50,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:50,449 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] [2020-10-14 10:02:50,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:02:50,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:50,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:50,450 INFO L82 PathProgramCache]: Analyzing trace with hash 322420460, now seen corresponding path program 1 times [2020-10-14 10:02:50,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:50,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091856735] [2020-10-14 10:02:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:54,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:02:54,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3551 [2020-10-14 10:02:54,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:54,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:02:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:02:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:54,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:54,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:54,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:54,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:02:54,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091856735] [2020-10-14 10:02:54,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:54,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:54,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056934754] [2020-10-14 10:02:54,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:54,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:54,217 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:02:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:54,693 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:02:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:02:54,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:02:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:54,700 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:02:54,701 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:02:54,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:02:54,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:02:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:02:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:02:54,725 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:02:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:54,726 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:02:54,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:02:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:02:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:02:54,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:54,730 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, 1, 1] [2020-10-14 10:02:54,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:02:54,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:54,731 INFO L82 PathProgramCache]: Analyzing trace with hash 578068042, now seen corresponding path program 1 times [2020-10-14 10:02:54,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:54,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872659723] [2020-10-14 10:02:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:57,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:57,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:02:57,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2979 [2020-10-14 10:02:57,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:57,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:02:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:57,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:57,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:57,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:02:57,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:57,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:02:57,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872659723] [2020-10-14 10:02:57,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:57,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:57,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101188129] [2020-10-14 10:02:57,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:57,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:57,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:57,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:57,867 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:02:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:58,866 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:02:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:02:58,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 10:02:58,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:58,872 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:02:58,872 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:02:58,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:02:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:02:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:02:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:02:58,912 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 110 [2020-10-14 10:02:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:58,915 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:02:58,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:02:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:02:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 10:02:58,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:58,926 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] [2020-10-14 10:02:58,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:02:58,927 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1034248011, now seen corresponding path program 1 times [2020-10-14 10:02:58,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:58,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154348242] [2020-10-14 10:02:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:59,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 10:02:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:02:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-14 10:02:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:59,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:02:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:02:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:59,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:59,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:02:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:59,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:02:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:02:59,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154348242] [2020-10-14 10:02:59,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:59,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:02:59,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129910264] [2020-10-14 10:02:59,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:02:59,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:02:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:02:59,632 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:03:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:00,179 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:03:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:03:00,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 10:03:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:00,188 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:03:00,188 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:03:00,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:03:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:03:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:03:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:03:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:03:00,223 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 127 [2020-10-14 10:03:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:00,224 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:03:00,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:03:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:03:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:03:00,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:00,227 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:03:00,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:03:00,227 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash -443568933, now seen corresponding path program 1 times [2020-10-14 10:03:00,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:00,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540912021] [2020-10-14 10:03:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:03:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:03:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-14 10:03:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:03:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:03:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:03:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:01,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:01,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:01,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:01,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:01,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:03:01,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540912021] [2020-10-14 10:03:01,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:01,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:03:01,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449102067] [2020-10-14 10:03:01,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:03:01,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:03:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:03:01,220 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-14 10:03:01,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:01,713 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-14 10:03:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:03:01,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 10:03:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:01,720 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:03:01,720 INFO L226 Difference]: Without dead ends: 1018 [2020-10-14 10:03:01,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:03:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-14 10:03:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-14 10:03:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 10:03:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-14 10:03:01,758 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-14 10:03:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:01,758 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-14 10:03:01,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:03:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-14 10:03:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:03:01,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:01,769 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:01,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:03:01,770 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1473787229, now seen corresponding path program 1 times [2020-10-14 10:03:01,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:01,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626197854] [2020-10-14 10:03:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:06,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:03:06,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:03:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:03:06,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:06,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:03:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 10:03:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:06,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:06,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:06,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:03:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:06,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:03:06,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626197854] [2020-10-14 10:03:06,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:06,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:03:06,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177839265] [2020-10-14 10:03:06,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:03:06,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:03:06,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:03:06,975 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 4 states. [2020-10-14 10:03:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:07,457 INFO L93 Difference]: Finished difference Result 1393 states and 2093 transitions. [2020-10-14 10:03:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:03:07,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-14 10:03:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:07,465 INFO L225 Difference]: With dead ends: 1393 [2020-10-14 10:03:07,465 INFO L226 Difference]: Without dead ends: 1141 [2020-10-14 10:03:07,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:03:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-10-14 10:03:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2020-10-14 10:03:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-10-14 10:03:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1715 transitions. [2020-10-14 10:03:07,525 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1715 transitions. Word has length 170 [2020-10-14 10:03:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:07,525 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1715 transitions. [2020-10-14 10:03:07,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:03:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1715 transitions. [2020-10-14 10:03:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 10:03:07,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:07,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:07,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:03:07,530 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:07,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1603209120, now seen corresponding path program 1 times [2020-10-14 10:03:07,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:07,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012756390] [2020-10-14 10:03:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 10:03:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 10:03:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:03:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:12,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:03:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:12,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:03:12,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012756390] [2020-10-14 10:03:12,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:12,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:12,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935990728] [2020-10-14 10:03:12,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:12,799 INFO L87 Difference]: Start difference. First operand 1141 states and 1715 transitions. Second operand 5 states. [2020-10-14 10:03:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:14,049 INFO L93 Difference]: Finished difference Result 3197 states and 4832 transitions. [2020-10-14 10:03:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:14,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 10:03:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:14,065 INFO L225 Difference]: With dead ends: 3197 [2020-10-14 10:03:14,065 INFO L226 Difference]: Without dead ends: 2070 [2020-10-14 10:03:14,069 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 [2020-10-14 10:03:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2020-10-14 10:03:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1528. [2020-10-14 10:03:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1528 states. [2020-10-14 10:03:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2435 transitions. [2020-10-14 10:03:14,150 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2435 transitions. Word has length 178 [2020-10-14 10:03:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:14,151 INFO L479 AbstractCegarLoop]: Abstraction has 1528 states and 2435 transitions. [2020-10-14 10:03:14,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2435 transitions. [2020-10-14 10:03:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 10:03:14,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:14,160 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:14,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:03:14,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:14,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1180486738, now seen corresponding path program 1 times [2020-10-14 10:03:14,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:14,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209162897] [2020-10-14 10:03:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:19,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:03:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:19,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:19,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:19,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:19,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:19,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:19,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:03:19,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209162897] [2020-10-14 10:03:19,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:19,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:19,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606453786] [2020-10-14 10:03:19,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:19,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:19,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:19,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:19,428 INFO L87 Difference]: Start difference. First operand 1528 states and 2435 transitions. Second operand 5 states. [2020-10-14 10:03:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:20,598 INFO L93 Difference]: Finished difference Result 3539 states and 5491 transitions. [2020-10-14 10:03:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:20,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-14 10:03:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:20,611 INFO L225 Difference]: With dead ends: 3539 [2020-10-14 10:03:20,611 INFO L226 Difference]: Without dead ends: 2007 [2020-10-14 10:03:20,620 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 [2020-10-14 10:03:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-14 10:03:20,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1519. [2020-10-14 10:03:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-10-14 10:03:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2417 transitions. [2020-10-14 10:03:20,710 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2417 transitions. Word has length 179 [2020-10-14 10:03:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:20,711 INFO L479 AbstractCegarLoop]: Abstraction has 1519 states and 2417 transitions. [2020-10-14 10:03:20,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2417 transitions. [2020-10-14 10:03:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 10:03:20,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:20,717 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:20,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:03:20,718 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:20,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:20,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2102456296, now seen corresponding path program 1 times [2020-10-14 10:03:20,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:20,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380866960] [2020-10-14 10:03:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:25,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 10:03:25,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 10:03:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:25,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:03:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:25,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:25,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:03:25,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380866960] [2020-10-14 10:03:25,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:25,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:25,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897274727] [2020-10-14 10:03:25,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:25,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:25,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:25,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:25,982 INFO L87 Difference]: Start difference. First operand 1519 states and 2417 transitions. Second operand 5 states. [2020-10-14 10:03:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:27,027 INFO L93 Difference]: Finished difference Result 3953 states and 6236 transitions. [2020-10-14 10:03:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:27,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 10:03:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:27,040 INFO L225 Difference]: With dead ends: 3953 [2020-10-14 10:03:27,040 INFO L226 Difference]: Without dead ends: 2448 [2020-10-14 10:03:27,045 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 [2020-10-14 10:03:27,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2020-10-14 10:03:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1906. [2020-10-14 10:03:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-10-14 10:03:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3137 transitions. [2020-10-14 10:03:27,125 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3137 transitions. Word has length 191 [2020-10-14 10:03:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:27,126 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 3137 transitions. [2020-10-14 10:03:27,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3137 transitions. [2020-10-14 10:03:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 10:03:27,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:27,132 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:27,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:03:27,133 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:27,133 INFO L82 PathProgramCache]: Analyzing trace with hash 182513124, now seen corresponding path program 1 times [2020-10-14 10:03:27,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:27,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157440504] [2020-10-14 10:03:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:03:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 10:03:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:32,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:32,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:32,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:03:32,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157440504] [2020-10-14 10:03:32,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:32,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:32,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736479016] [2020-10-14 10:03:32,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:32,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:32,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:32,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:32,421 INFO L87 Difference]: Start difference. First operand 1906 states and 3137 transitions. Second operand 5 states. [2020-10-14 10:03:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:33,347 INFO L93 Difference]: Finished difference Result 5668 states and 9330 transitions. [2020-10-14 10:03:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:33,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 10:03:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:33,370 INFO L225 Difference]: With dead ends: 5668 [2020-10-14 10:03:33,370 INFO L226 Difference]: Without dead ends: 3776 [2020-10-14 10:03:33,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2020-10-14 10:03:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3774. [2020-10-14 10:03:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-14 10:03:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 6173 transitions. [2020-10-14 10:03:33,515 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 6173 transitions. Word has length 192 [2020-10-14 10:03:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:33,515 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 6173 transitions. [2020-10-14 10:03:33,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 6173 transitions. [2020-10-14 10:03:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 10:03:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:33,526 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:33,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:03:33,526 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:33,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1384244826, now seen corresponding path program 1 times [2020-10-14 10:03:33,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:33,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577119713] [2020-10-14 10:03:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:38,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 10:03:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:03:38,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:38,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:03:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:38,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:38,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:38,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:03:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:38,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:03:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:03:38,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577119713] [2020-10-14 10:03:38,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:38,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:38,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647720628] [2020-10-14 10:03:38,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:38,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:38,690 INFO L87 Difference]: Start difference. First operand 3774 states and 6173 transitions. Second operand 5 states. [2020-10-14 10:03:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:39,898 INFO L93 Difference]: Finished difference Result 9376 states and 15123 transitions. [2020-10-14 10:03:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:39,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 10:03:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:39,928 INFO L225 Difference]: With dead ends: 9376 [2020-10-14 10:03:39,928 INFO L226 Difference]: Without dead ends: 5621 [2020-10-14 10:03:39,939 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 [2020-10-14 10:03:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2020-10-14 10:03:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 3774. [2020-10-14 10:03:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-14 10:03:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 6173 transitions. [2020-10-14 10:03:40,100 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 6173 transitions. Word has length 192 [2020-10-14 10:03:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:40,101 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 6173 transitions. [2020-10-14 10:03:40,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 6173 transitions. [2020-10-14 10:03:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 10:03:40,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:40,112 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:40,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:03:40,112 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -522719990, now seen corresponding path program 1 times [2020-10-14 10:03:40,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:40,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315302226] [2020-10-14 10:03:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:03:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:45,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:45,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:45,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:45,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:45,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:45,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:03:45,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315302226] [2020-10-14 10:03:45,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:45,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:45,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872152983] [2020-10-14 10:03:45,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:45,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:45,294 INFO L87 Difference]: Start difference. First operand 3774 states and 6173 transitions. Second operand 5 states. [2020-10-14 10:03:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:46,468 INFO L93 Difference]: Finished difference Result 9286 states and 15001 transitions. [2020-10-14 10:03:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:46,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 10:03:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:46,500 INFO L225 Difference]: With dead ends: 9286 [2020-10-14 10:03:46,500 INFO L226 Difference]: Without dead ends: 5495 [2020-10-14 10:03:46,509 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 [2020-10-14 10:03:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2020-10-14 10:03:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3774. [2020-10-14 10:03:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-14 10:03:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 6173 transitions. [2020-10-14 10:03:46,644 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 6173 transitions. Word has length 192 [2020-10-14 10:03:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:46,645 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 6173 transitions. [2020-10-14 10:03:46,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 6173 transitions. [2020-10-14 10:03:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 10:03:46,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:46,655 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:46,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:03:46,656 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -839388454, now seen corresponding path program 1 times [2020-10-14 10:03:46,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:46,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970774411] [2020-10-14 10:03:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:03:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:51,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:03:51,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970774411] [2020-10-14 10:03:51,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:51,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:51,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402068386] [2020-10-14 10:03:51,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:51,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:51,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:51,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:51,800 INFO L87 Difference]: Start difference. First operand 3774 states and 6173 transitions. Second operand 5 states. [2020-10-14 10:03:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:52,873 INFO L93 Difference]: Finished difference Result 9394 states and 15141 transitions. [2020-10-14 10:03:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:52,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 10:03:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:52,892 INFO L225 Difference]: With dead ends: 9394 [2020-10-14 10:03:52,892 INFO L226 Difference]: Without dead ends: 5639 [2020-10-14 10:03:52,900 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 [2020-10-14 10:03:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2020-10-14 10:03:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 3792. [2020-10-14 10:03:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2020-10-14 10:03:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 6191 transitions. [2020-10-14 10:03:53,023 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 6191 transitions. Word has length 192 [2020-10-14 10:03:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:53,024 INFO L479 AbstractCegarLoop]: Abstraction has 3792 states and 6191 transitions. [2020-10-14 10:03:53,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 6191 transitions. [2020-10-14 10:03:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:03:53,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:53,032 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:53,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:03:53,033 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1236272372, now seen corresponding path program 1 times [2020-10-14 10:03:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:53,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770228014] [2020-10-14 10:03:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:03:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:03:58,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770228014] [2020-10-14 10:03:58,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:58,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:58,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620646763] [2020-10-14 10:03:58,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:58,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:58,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:58,163 INFO L87 Difference]: Start difference. First operand 3792 states and 6191 transitions. Second operand 5 states. [2020-10-14 10:03:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:59,213 INFO L93 Difference]: Finished difference Result 9322 states and 15037 transitions. [2020-10-14 10:03:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:59,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:03:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:59,226 INFO L225 Difference]: With dead ends: 9322 [2020-10-14 10:03:59,227 INFO L226 Difference]: Without dead ends: 5513 [2020-10-14 10:03:59,234 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 [2020-10-14 10:03:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2020-10-14 10:03:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 3792. [2020-10-14 10:03:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2020-10-14 10:03:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 6191 transitions. [2020-10-14 10:03:59,366 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 6191 transitions. Word has length 193 [2020-10-14 10:03:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:59,367 INFO L479 AbstractCegarLoop]: Abstraction has 3792 states and 6191 transitions. [2020-10-14 10:03:59,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 6191 transitions. [2020-10-14 10:03:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:03:59,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:59,377 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:59,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:03:59,377 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1076309815, now seen corresponding path program 1 times [2020-10-14 10:03:59,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:59,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458477790] [2020-10-14 10:03:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:04,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:04:04,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:04:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:04:04,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:04,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:04:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:04:04,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458477790] [2020-10-14 10:04:04,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:04,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:04,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115399665] [2020-10-14 10:04:04,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:04,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:04,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:04,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:04,556 INFO L87 Difference]: Start difference. First operand 3792 states and 6191 transitions. Second operand 5 states. [2020-10-14 10:04:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:05,443 INFO L93 Difference]: Finished difference Result 9664 states and 15547 transitions. [2020-10-14 10:04:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:05,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:04:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:05,458 INFO L225 Difference]: With dead ends: 9664 [2020-10-14 10:04:05,458 INFO L226 Difference]: Without dead ends: 5891 [2020-10-14 10:04:05,466 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 [2020-10-14 10:04:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5891 states. [2020-10-14 10:04:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5891 to 3774. [2020-10-14 10:04:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-14 10:04:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 6173 transitions. [2020-10-14 10:04:05,612 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 6173 transitions. Word has length 193 [2020-10-14 10:04:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:05,612 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 6173 transitions. [2020-10-14 10:04:05,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 6173 transitions. [2020-10-14 10:04:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:04:05,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:05,620 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:05,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:04:05,621 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1525594024, now seen corresponding path program 1 times [2020-10-14 10:04:05,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:05,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066675179] [2020-10-14 10:04:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:04:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:04:10,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066675179] [2020-10-14 10:04:10,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:10,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:10,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295323880] [2020-10-14 10:04:10,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:10,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:10,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:10,759 INFO L87 Difference]: Start difference. First operand 3774 states and 6173 transitions. Second operand 5 states. [2020-10-14 10:04:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:11,783 INFO L93 Difference]: Finished difference Result 9304 states and 15019 transitions. [2020-10-14 10:04:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:11,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:04:11,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:11,800 INFO L225 Difference]: With dead ends: 9304 [2020-10-14 10:04:11,800 INFO L226 Difference]: Without dead ends: 5513 [2020-10-14 10:04:11,808 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 [2020-10-14 10:04:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2020-10-14 10:04:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 3792. [2020-10-14 10:04:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2020-10-14 10:04:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 6191 transitions. [2020-10-14 10:04:11,941 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 6191 transitions. Word has length 193 [2020-10-14 10:04:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:11,942 INFO L479 AbstractCegarLoop]: Abstraction has 3792 states and 6191 transitions. [2020-10-14 10:04:11,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 6191 transitions. [2020-10-14 10:04:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 10:04:11,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:11,950 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:11,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:04:11,951 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:11,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2026477467, now seen corresponding path program 1 times [2020-10-14 10:04:11,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:11,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785603815] [2020-10-14 10:04:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 10:04:17,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:04:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 10:04:17,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:17,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:04:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:17,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:17,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:04:17,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785603815] [2020-10-14 10:04:17,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:17,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:17,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44873271] [2020-10-14 10:04:17,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:17,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:17,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:17,129 INFO L87 Difference]: Start difference. First operand 3792 states and 6191 transitions. Second operand 5 states. [2020-10-14 10:04:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:18,024 INFO L93 Difference]: Finished difference Result 9664 states and 15547 transitions. [2020-10-14 10:04:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:18,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 10:04:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:18,035 INFO L225 Difference]: With dead ends: 9664 [2020-10-14 10:04:18,035 INFO L226 Difference]: Without dead ends: 5855 [2020-10-14 10:04:18,044 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 [2020-10-14 10:04:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2020-10-14 10:04:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 3774. [2020-10-14 10:04:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-14 10:04:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 6173 transitions. [2020-10-14 10:04:18,211 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 6173 transitions. Word has length 194 [2020-10-14 10:04:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:18,212 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 6173 transitions. [2020-10-14 10:04:18,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 6173 transitions. [2020-10-14 10:04:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 10:04:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:18,222 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:18,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:04:18,222 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash -415856499, now seen corresponding path program 1 times [2020-10-14 10:04:18,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:18,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819569446] [2020-10-14 10:04:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:23,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:04:23,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:23,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:04:23,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819569446] [2020-10-14 10:04:23,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:23,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:23,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291090644] [2020-10-14 10:04:23,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:23,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:23,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:23,421 INFO L87 Difference]: Start difference. First operand 3774 states and 6173 transitions. Second operand 5 states. [2020-10-14 10:04:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:24,511 INFO L93 Difference]: Finished difference Result 9196 states and 14875 transitions. [2020-10-14 10:04:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:24,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 10:04:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:24,523 INFO L225 Difference]: With dead ends: 9196 [2020-10-14 10:04:24,523 INFO L226 Difference]: Without dead ends: 5441 [2020-10-14 10:04:24,531 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 [2020-10-14 10:04:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2020-10-14 10:04:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 4341. [2020-10-14 10:04:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4341 states. [2020-10-14 10:04:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 7190 transitions. [2020-10-14 10:04:24,695 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 7190 transitions. Word has length 207 [2020-10-14 10:04:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:24,696 INFO L479 AbstractCegarLoop]: Abstraction has 4341 states and 7190 transitions. [2020-10-14 10:04:24,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 7190 transitions. [2020-10-14 10:04:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 10:04:24,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:24,708 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:24,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:04:24,709 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2087491006, now seen corresponding path program 1 times [2020-10-14 10:04:24,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:24,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650420661] [2020-10-14 10:04:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:26,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:29,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 10:04:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:04:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:04:29,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650420661] [2020-10-14 10:04:29,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:29,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:29,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750518589] [2020-10-14 10:04:29,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:29,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:29,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:29,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:29,849 INFO L87 Difference]: Start difference. First operand 4341 states and 7190 transitions. Second operand 5 states. [2020-10-14 10:04:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:30,851 INFO L93 Difference]: Finished difference Result 9763 states and 15874 transitions. [2020-10-14 10:04:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:30,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-14 10:04:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:30,862 INFO L225 Difference]: With dead ends: 9763 [2020-10-14 10:04:30,862 INFO L226 Difference]: Without dead ends: 5441 [2020-10-14 10:04:30,871 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 [2020-10-14 10:04:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2020-10-14 10:04:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 4503. [2020-10-14 10:04:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4503 states. [2020-10-14 10:04:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 7496 transitions. [2020-10-14 10:04:31,022 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 7496 transitions. Word has length 219 [2020-10-14 10:04:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:31,023 INFO L479 AbstractCegarLoop]: Abstraction has 4503 states and 7496 transitions. [2020-10-14 10:04:31,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 7496 transitions. [2020-10-14 10:04:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 10:04:31,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:31,037 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:31,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:04:31,037 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash -114432699, now seen corresponding path program 1 times [2020-10-14 10:04:31,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:31,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927333891] [2020-10-14 10:04:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:31,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:33,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:04:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:04:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-14 10:04:36,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927333891] [2020-10-14 10:04:36,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:36,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:36,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486223575] [2020-10-14 10:04:36,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:36,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:36,184 INFO L87 Difference]: Start difference. First operand 4503 states and 7496 transitions. Second operand 5 states. [2020-10-14 10:04:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:37,252 INFO L93 Difference]: Finished difference Result 10744 states and 17629 transitions. [2020-10-14 10:04:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:37,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 10:04:37,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:37,265 INFO L225 Difference]: With dead ends: 10744 [2020-10-14 10:04:37,265 INFO L226 Difference]: Without dead ends: 6260 [2020-10-14 10:04:37,274 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 [2020-10-14 10:04:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2020-10-14 10:04:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 4962. [2020-10-14 10:04:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2020-10-14 10:04:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 8261 transitions. [2020-10-14 10:04:37,445 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 8261 transitions. Word has length 220 [2020-10-14 10:04:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:37,445 INFO L479 AbstractCegarLoop]: Abstraction has 4962 states and 8261 transitions. [2020-10-14 10:04:37,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 8261 transitions. [2020-10-14 10:04:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 10:04:37,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:37,455 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:37,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:04:37,456 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 412961351, now seen corresponding path program 1 times [2020-10-14 10:04:37,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:37,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599044137] [2020-10-14 10:04:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:04:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:42,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:04:42,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599044137] [2020-10-14 10:04:42,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:42,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:42,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373594878] [2020-10-14 10:04:42,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:42,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:42,621 INFO L87 Difference]: Start difference. First operand 4962 states and 8261 transitions. Second operand 5 states. [2020-10-14 10:04:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:43,697 INFO L93 Difference]: Finished difference Result 10843 states and 17692 transitions. [2020-10-14 10:04:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:43,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 10:04:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:43,705 INFO L225 Difference]: With dead ends: 10843 [2020-10-14 10:04:43,705 INFO L226 Difference]: Without dead ends: 5900 [2020-10-14 10:04:43,711 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 [2020-10-14 10:04:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2020-10-14 10:04:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 4962. [2020-10-14 10:04:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2020-10-14 10:04:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 8243 transitions. [2020-10-14 10:04:43,837 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 8243 transitions. Word has length 220 [2020-10-14 10:04:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:43,837 INFO L479 AbstractCegarLoop]: Abstraction has 4962 states and 8243 transitions. [2020-10-14 10:04:43,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 8243 transitions. [2020-10-14 10:04:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 10:04:43,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:43,845 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:43,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:04:43,846 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash -272576654, now seen corresponding path program 1 times [2020-10-14 10:04:43,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:43,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156498256] [2020-10-14 10:04:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:04:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:04:49,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156498256] [2020-10-14 10:04:49,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:49,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:49,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815573495] [2020-10-14 10:04:49,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:49,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:49,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:49,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:49,016 INFO L87 Difference]: Start difference. First operand 4962 states and 8243 transitions. Second operand 5 states. [2020-10-14 10:04:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:50,072 INFO L93 Difference]: Finished difference Result 10825 states and 17638 transitions. [2020-10-14 10:04:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:50,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 10:04:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:50,081 INFO L225 Difference]: With dead ends: 10825 [2020-10-14 10:04:50,082 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:04:50,089 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 [2020-10-14 10:04:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:04:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4944. [2020-10-14 10:04:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4944 states. [2020-10-14 10:04:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 8207 transitions. [2020-10-14 10:04:50,217 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 8207 transitions. Word has length 220 [2020-10-14 10:04:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:50,218 INFO L479 AbstractCegarLoop]: Abstraction has 4944 states and 8207 transitions. [2020-10-14 10:04:50,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 8207 transitions. [2020-10-14 10:04:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 10:04:50,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:50,226 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:50,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:04:50,226 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash -364775547, now seen corresponding path program 1 times [2020-10-14 10:04:50,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:50,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601535780] [2020-10-14 10:04:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:55,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:04:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:04:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:55,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:55,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:55,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:55,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:04:55,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601535780] [2020-10-14 10:04:55,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:55,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:55,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782936966] [2020-10-14 10:04:55,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:55,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:55,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:55,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:55,370 INFO L87 Difference]: Start difference. First operand 4944 states and 8207 transitions. Second operand 5 states. [2020-10-14 10:04:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:56,413 INFO L93 Difference]: Finished difference Result 11536 states and 18943 transitions. [2020-10-14 10:04:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:56,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-14 10:04:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:56,422 INFO L225 Difference]: With dead ends: 11536 [2020-10-14 10:04:56,422 INFO L226 Difference]: Without dead ends: 6611 [2020-10-14 10:04:56,430 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 [2020-10-14 10:04:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-10-14 10:04:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5511. [2020-10-14 10:04:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-14 10:04:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 9224 transitions. [2020-10-14 10:04:56,563 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 9224 transitions. Word has length 221 [2020-10-14 10:04:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:56,564 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 9224 transitions. [2020-10-14 10:04:56,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 9224 transitions. [2020-10-14 10:04:56,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 10:04:56,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:56,570 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:56,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:04:56,570 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash -485569328, now seen corresponding path program 1 times [2020-10-14 10:04:56,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:56,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149981296] [2020-10-14 10:04:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:05:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:05:01,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149981296] [2020-10-14 10:05:01,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:01,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:01,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892922859] [2020-10-14 10:05:01,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:01,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:01,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:01,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:01,759 INFO L87 Difference]: Start difference. First operand 5511 states and 9224 transitions. Second operand 5 states. [2020-10-14 10:05:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:02,783 INFO L93 Difference]: Finished difference Result 11869 states and 19546 transitions. [2020-10-14 10:05:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:02,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-14 10:05:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:02,791 INFO L225 Difference]: With dead ends: 11869 [2020-10-14 10:05:02,791 INFO L226 Difference]: Without dead ends: 6377 [2020-10-14 10:05:02,799 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 [2020-10-14 10:05:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2020-10-14 10:05:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 5511. [2020-10-14 10:05:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-14 10:05:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 9206 transitions. [2020-10-14 10:05:02,935 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 9206 transitions. Word has length 221 [2020-10-14 10:05:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:02,936 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 9206 transitions. [2020-10-14 10:05:02,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 9206 transitions. [2020-10-14 10:05:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 10:05:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:02,943 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:02,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:05:02,943 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:02,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:02,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1760926417, now seen corresponding path program 1 times [2020-10-14 10:05:02,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:02,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434807359] [2020-10-14 10:05:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 10:05:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:05:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:08,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:08,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:05:08,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434807359] [2020-10-14 10:05:08,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:08,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:08,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757128637] [2020-10-14 10:05:08,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:08,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:08,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:08,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:08,074 INFO L87 Difference]: Start difference. First operand 5511 states and 9206 transitions. Second operand 5 states. [2020-10-14 10:05:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:09,138 INFO L93 Difference]: Finished difference Result 12670 states and 20941 transitions. [2020-10-14 10:05:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:09,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-14 10:05:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:09,147 INFO L225 Difference]: With dead ends: 12670 [2020-10-14 10:05:09,147 INFO L226 Difference]: Without dead ends: 7178 [2020-10-14 10:05:09,155 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 [2020-10-14 10:05:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-10-14 10:05:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 5511. [2020-10-14 10:05:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-14 10:05:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 9206 transitions. [2020-10-14 10:05:09,331 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 9206 transitions. Word has length 221 [2020-10-14 10:05:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:09,332 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 9206 transitions. [2020-10-14 10:05:09,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 9206 transitions. [2020-10-14 10:05:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 10:05:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:09,337 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:09,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:05:09,337 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:09,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1564006184, now seen corresponding path program 1 times [2020-10-14 10:05:09,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:09,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151433165] [2020-10-14 10:05:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:14,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 10:05:14,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:14,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:14,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:14,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:05:14,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151433165] [2020-10-14 10:05:14,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:14,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:14,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952774649] [2020-10-14 10:05:14,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:14,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:14,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:14,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:14,574 INFO L87 Difference]: Start difference. First operand 5511 states and 9206 transitions. Second operand 5 states. [2020-10-14 10:05:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:15,555 INFO L93 Difference]: Finished difference Result 13327 states and 22062 transitions. [2020-10-14 10:05:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:15,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-14 10:05:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:15,565 INFO L225 Difference]: With dead ends: 13327 [2020-10-14 10:05:15,566 INFO L226 Difference]: Without dead ends: 7835 [2020-10-14 10:05:15,571 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 [2020-10-14 10:05:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7835 states. [2020-10-14 10:05:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7835 to 5511. [2020-10-14 10:05:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-14 10:05:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 9188 transitions. [2020-10-14 10:05:15,737 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 9188 transitions. Word has length 222 [2020-10-14 10:05:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:15,738 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 9188 transitions. [2020-10-14 10:05:15,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 9188 transitions. [2020-10-14 10:05:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 10:05:15,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:15,744 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:15,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:05:15,744 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1445452486, now seen corresponding path program 1 times [2020-10-14 10:05:15,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:15,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175497285] [2020-10-14 10:05:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:05:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:20,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:05:20,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175497285] [2020-10-14 10:05:20,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:20,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:20,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133074330] [2020-10-14 10:05:20,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:20,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:20,927 INFO L87 Difference]: Start difference. First operand 5511 states and 9188 transitions. Second operand 5 states. [2020-10-14 10:05:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:22,048 INFO L93 Difference]: Finished difference Result 12670 states and 20887 transitions. [2020-10-14 10:05:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:22,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-14 10:05:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:22,059 INFO L225 Difference]: With dead ends: 12670 [2020-10-14 10:05:22,059 INFO L226 Difference]: Without dead ends: 7178 [2020-10-14 10:05:22,065 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 [2020-10-14 10:05:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-10-14 10:05:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6240. [2020-10-14 10:05:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10511 transitions. [2020-10-14 10:05:22,209 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10511 transitions. Word has length 233 [2020-10-14 10:05:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:22,209 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10511 transitions. [2020-10-14 10:05:22,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10511 transitions. [2020-10-14 10:05:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 10:05:22,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:22,214 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:22,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:05:22,214 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash -267045242, now seen corresponding path program 1 times [2020-10-14 10:05:22,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:22,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873395993] [2020-10-14 10:05:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 10:05:27,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:05:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:05:27,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873395993] [2020-10-14 10:05:27,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:27,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:27,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072802652] [2020-10-14 10:05:27,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:27,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:27,390 INFO L87 Difference]: Start difference. First operand 6240 states and 10511 transitions. Second operand 5 states. [2020-10-14 10:05:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:28,511 INFO L93 Difference]: Finished difference Result 14128 states and 23533 transitions. [2020-10-14 10:05:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:28,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-14 10:05:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:28,522 INFO L225 Difference]: With dead ends: 14128 [2020-10-14 10:05:28,522 INFO L226 Difference]: Without dead ends: 7907 [2020-10-14 10:05:28,531 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 [2020-10-14 10:05:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7907 states. [2020-10-14 10:05:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7907 to 6240. [2020-10-14 10:05:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10511 transitions. [2020-10-14 10:05:28,699 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10511 transitions. Word has length 233 [2020-10-14 10:05:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:28,699 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10511 transitions. [2020-10-14 10:05:28,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10511 transitions. [2020-10-14 10:05:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 10:05:28,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:28,705 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:28,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:05:28,705 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:28,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1686075059, now seen corresponding path program 1 times [2020-10-14 10:05:28,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:28,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59074106] [2020-10-14 10:05:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 10:05:33,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:05:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:33,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:33,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 10:05:33,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59074106] [2020-10-14 10:05:33,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:33,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:33,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630886514] [2020-10-14 10:05:33,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:33,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:33,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:33,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:33,874 INFO L87 Difference]: Start difference. First operand 6240 states and 10511 transitions. Second operand 5 states. [2020-10-14 10:05:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:34,927 INFO L93 Difference]: Finished difference Result 13309 states and 22102 transitions. [2020-10-14 10:05:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:34,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 10:05:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:34,939 INFO L225 Difference]: With dead ends: 13309 [2020-10-14 10:05:34,939 INFO L226 Difference]: Without dead ends: 7088 [2020-10-14 10:05:34,948 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 [2020-10-14 10:05:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2020-10-14 10:05:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 6240. [2020-10-14 10:05:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10493 transitions. [2020-10-14 10:05:35,133 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10493 transitions. Word has length 234 [2020-10-14 10:05:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:35,134 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10493 transitions. [2020-10-14 10:05:35,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10493 transitions. [2020-10-14 10:05:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 10:05:35,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:35,139 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:35,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:05:35,139 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash 40636985, now seen corresponding path program 1 times [2020-10-14 10:05:35,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:35,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119034451] [2020-10-14 10:05:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:05:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 10:05:40,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119034451] [2020-10-14 10:05:40,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:40,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:40,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494990001] [2020-10-14 10:05:40,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:40,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:40,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:40,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:40,259 INFO L87 Difference]: Start difference. First operand 6240 states and 10493 transitions. Second operand 5 states. [2020-10-14 10:05:41,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:41,313 INFO L93 Difference]: Finished difference Result 13309 states and 22066 transitions. [2020-10-14 10:05:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:41,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 10:05:41,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:41,322 INFO L225 Difference]: With dead ends: 13309 [2020-10-14 10:05:41,323 INFO L226 Difference]: Without dead ends: 7088 [2020-10-14 10:05:41,329 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 [2020-10-14 10:05:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2020-10-14 10:05:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 6240. [2020-10-14 10:05:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10475 transitions. [2020-10-14 10:05:41,489 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10475 transitions. Word has length 234 [2020-10-14 10:05:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:41,490 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10475 transitions. [2020-10-14 10:05:41,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10475 transitions. [2020-10-14 10:05:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 10:05:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:41,495 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:41,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:05:41,496 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash -254770908, now seen corresponding path program 1 times [2020-10-14 10:05:41,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:41,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421535539] [2020-10-14 10:05:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 10:05:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-14 10:05:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:05:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:46,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:46,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:05:46,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421535539] [2020-10-14 10:05:46,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:46,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:46,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259235475] [2020-10-14 10:05:46,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:46,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:46,898 INFO L87 Difference]: Start difference. First operand 6240 states and 10475 transitions. Second operand 5 states. [2020-10-14 10:05:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:47,958 INFO L93 Difference]: Finished difference Result 13309 states and 22030 transitions. [2020-10-14 10:05:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:47,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 10:05:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:47,967 INFO L225 Difference]: With dead ends: 13309 [2020-10-14 10:05:47,967 INFO L226 Difference]: Without dead ends: 7088 [2020-10-14 10:05:47,974 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 [2020-10-14 10:05:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2020-10-14 10:05:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 6240. [2020-10-14 10:05:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10457 transitions. [2020-10-14 10:05:48,196 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10457 transitions. Word has length 234 [2020-10-14 10:05:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:48,196 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10457 transitions. [2020-10-14 10:05:48,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10457 transitions. [2020-10-14 10:05:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 10:05:48,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:48,202 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:48,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:05:48,202 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:48,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 484811137, now seen corresponding path program 1 times [2020-10-14 10:05:48,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:48,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079561716] [2020-10-14 10:05:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 10:05:53,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-14 10:05:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:53,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:05:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:53,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 10:05:53,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079561716] [2020-10-14 10:05:53,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:53,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:53,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006573066] [2020-10-14 10:05:53,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:53,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:53,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:53,488 INFO L87 Difference]: Start difference. First operand 6240 states and 10457 transitions. Second operand 5 states. [2020-10-14 10:05:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:54,543 INFO L93 Difference]: Finished difference Result 13291 states and 21976 transitions. [2020-10-14 10:05:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:54,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 10:05:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:54,552 INFO L225 Difference]: With dead ends: 13291 [2020-10-14 10:05:54,552 INFO L226 Difference]: Without dead ends: 7070 [2020-10-14 10:05:54,560 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 [2020-10-14 10:05:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2020-10-14 10:05:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 6240. [2020-10-14 10:05:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:05:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10439 transitions. [2020-10-14 10:05:54,720 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10439 transitions. Word has length 234 [2020-10-14 10:05:54,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:54,721 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10439 transitions. [2020-10-14 10:05:54,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10439 transitions. [2020-10-14 10:05:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 10:05:54,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:54,726 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:54,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:05:54,726 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1120297538, now seen corresponding path program 1 times [2020-10-14 10:05:54,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:54,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980330735] [2020-10-14 10:05:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:05:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:59,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:59,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 10:05:59,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980330735] [2020-10-14 10:05:59,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:59,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:59,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206542344] [2020-10-14 10:05:59,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:59,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:59,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:59,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:59,856 INFO L87 Difference]: Start difference. First operand 6240 states and 10439 transitions. Second operand 5 states. [2020-10-14 10:06:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:00,923 INFO L93 Difference]: Finished difference Result 13291 states and 21940 transitions. [2020-10-14 10:06:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:00,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 10:06:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:00,932 INFO L225 Difference]: With dead ends: 13291 [2020-10-14 10:06:00,933 INFO L226 Difference]: Without dead ends: 7070 [2020-10-14 10:06:00,939 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 [2020-10-14 10:06:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2020-10-14 10:06:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 6240. [2020-10-14 10:06:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:06:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10421 transitions. [2020-10-14 10:06:01,097 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10421 transitions. Word has length 235 [2020-10-14 10:06:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:01,097 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10421 transitions. [2020-10-14 10:06:01,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10421 transitions. [2020-10-14 10:06:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 10:06:01,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:01,105 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:01,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:06:01,105 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:01,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1669343117, now seen corresponding path program 1 times [2020-10-14 10:06:01,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:01,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611147315] [2020-10-14 10:06:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:01,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:06,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 10:06:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:06:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 10:06:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:06,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:06:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:06:06,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611147315] [2020-10-14 10:06:06,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:06,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:06,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027374456] [2020-10-14 10:06:06,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:06,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:06,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:06,274 INFO L87 Difference]: Start difference. First operand 6240 states and 10421 transitions. Second operand 5 states. [2020-10-14 10:06:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:07,333 INFO L93 Difference]: Finished difference Result 13255 states and 21868 transitions. [2020-10-14 10:06:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:07,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 10:06:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:07,343 INFO L225 Difference]: With dead ends: 13255 [2020-10-14 10:06:07,343 INFO L226 Difference]: Without dead ends: 7034 [2020-10-14 10:06:07,350 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 [2020-10-14 10:06:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2020-10-14 10:06:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 6240. [2020-10-14 10:06:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:06:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10403 transitions. [2020-10-14 10:06:07,505 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10403 transitions. Word has length 235 [2020-10-14 10:06:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:07,505 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10403 transitions. [2020-10-14 10:06:07,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10403 transitions. [2020-10-14 10:06:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 10:06:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:07,510 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:07,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:06:07,510 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash -844109452, now seen corresponding path program 1 times [2020-10-14 10:06:07,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:07,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050653039] [2020-10-14 10:06:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 10:06:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:06:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 10:06:12,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050653039] [2020-10-14 10:06:12,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:12,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:12,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043901065] [2020-10-14 10:06:12,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:12,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:12,670 INFO L87 Difference]: Start difference. First operand 6240 states and 10403 transitions. Second operand 5 states. [2020-10-14 10:06:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:13,719 INFO L93 Difference]: Finished difference Result 13255 states and 21832 transitions. [2020-10-14 10:06:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:13,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-14 10:06:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:13,727 INFO L225 Difference]: With dead ends: 13255 [2020-10-14 10:06:13,728 INFO L226 Difference]: Without dead ends: 7034 [2020-10-14 10:06:13,733 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 [2020-10-14 10:06:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2020-10-14 10:06:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 6240. [2020-10-14 10:06:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:06:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10385 transitions. [2020-10-14 10:06:13,890 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10385 transitions. Word has length 236 [2020-10-14 10:06:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:13,891 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10385 transitions. [2020-10-14 10:06:13,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10385 transitions. [2020-10-14 10:06:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 10:06:13,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:13,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:13,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:06:13,896 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash -268994347, now seen corresponding path program 1 times [2020-10-14 10:06:13,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:13,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859654053] [2020-10-14 10:06:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 10:06:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 10:06:19,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859654053] [2020-10-14 10:06:19,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:19,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:19,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930822263] [2020-10-14 10:06:19,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:19,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:19,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:19,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:19,060 INFO L87 Difference]: Start difference. First operand 6240 states and 10385 transitions. Second operand 5 states. [2020-10-14 10:06:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:20,194 INFO L93 Difference]: Finished difference Result 14128 states and 23281 transitions. [2020-10-14 10:06:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:20,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-14 10:06:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:20,204 INFO L225 Difference]: With dead ends: 14128 [2020-10-14 10:06:20,205 INFO L226 Difference]: Without dead ends: 7907 [2020-10-14 10:06:20,212 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 [2020-10-14 10:06:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7907 states. [2020-10-14 10:06:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7907 to 6240. [2020-10-14 10:06:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-14 10:06:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 10385 transitions. [2020-10-14 10:06:20,394 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 10385 transitions. Word has length 236 [2020-10-14 10:06:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:20,394 INFO L479 AbstractCegarLoop]: Abstraction has 6240 states and 10385 transitions. [2020-10-14 10:06:20,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 10385 transitions. [2020-10-14 10:06:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 10:06:20,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:20,400 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:20,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:06:20,400 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:20,400 INFO L82 PathProgramCache]: Analyzing trace with hash 424388882, now seen corresponding path program 1 times [2020-10-14 10:06:20,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:20,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285443882] [2020-10-14 10:06:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking...