/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.14.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:41:04,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:41:04,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:41:04,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:41:04,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:41:04,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:41:04,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:41:04,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:41:04,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:41:04,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:41:04,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:41:04,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:41:04,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:41:04,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:41:04,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:41:04,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:41:04,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:41:04,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:41:04,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:41:04,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:41:04,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:41:04,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:41:04,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:41:04,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:41:04,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:41:04,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:41:04,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:41:04,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:41:04,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:41:04,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:41:04,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:41:05,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:41:05,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:41:05,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:41:05,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:41:05,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:41:05,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:41:05,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:41:05,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:41:05,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:41:05,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:41:05,013 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 [2020-10-15 04:41:05,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:41:05,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:41:05,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:41:05,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:41:05,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:41:05,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:41:05,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:41:05,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:41:05,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:41:05,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:41:05,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:41:05,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:41:05,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:41:05,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:41:05,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:41:05,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:41:05,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:41:05,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:41:05,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:41:05,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:41:05,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:41:05,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:41:05,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:41:05,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:41:05,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:41:05,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:41:05,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:41:05,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:41:05,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:41:05,066 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:41:05,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:41:05,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:41:05,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:41:05,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:41:05,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:41:05,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-1.c [2020-10-15 04:41:05,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba11a9367/9a2d16341b8144acb168246f0ce3efee/FLAG87749b4b7 [2020-10-15 04:41:06,055 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:41:06,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-1.c [2020-10-15 04:41:06,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba11a9367/9a2d16341b8144acb168246f0ce3efee/FLAG87749b4b7 [2020-10-15 04:41:06,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba11a9367/9a2d16341b8144acb168246f0ce3efee [2020-10-15 04:41:06,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:41:06,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:41:06,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:41:06,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:41:06,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:41:06,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:41:06" (1/1) ... [2020-10-15 04:41:06,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:06, skipping insertion in model container [2020-10-15 04:41:06,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:41:06" (1/1) ... [2020-10-15 04:41:06,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:41:06,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:41:07,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:41:07,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:41:07,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:41:07,260 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:41:07,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07 WrapperNode [2020-10-15 04:41:07,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:41:07,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:41:07,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:41:07,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:41:07,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... [2020-10-15 04:41:07,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:41:07,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:41:07,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:41:07,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:41:07,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:41:07,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:41:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:41:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:41:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:41:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:41:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:41:07,482 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:41:07,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:41:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:41:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:41:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:41:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:41:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:41:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:41:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:41:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:41:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:41:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:41:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:41:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:41:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:41:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:41:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:41:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:41:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:41:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:41:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:41:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:41:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:41:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:41:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:41:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:41:08,267 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:41:09,006 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:41:09,007 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:41:09,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:41:09,035 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:41:09,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:09 BoogieIcfgContainer [2020-10-15 04:41:09,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:41:09,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:41:09,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:41:09,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:41:09,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:41:06" (1/3) ... [2020-10-15 04:41:09,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512596ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:09, skipping insertion in model container [2020-10-15 04:41:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:07" (2/3) ... [2020-10-15 04:41:09,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512596ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:09, skipping insertion in model container [2020-10-15 04:41:09,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:09" (3/3) ... [2020-10-15 04:41:09,050 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2020-10-15 04:41:09,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:41:09,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:41:09,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:41:09,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:41:09,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:41:09,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:41:09,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:41:09,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:41:09,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:41:09,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:41:09,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:41:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-10-15 04:41:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 04:41:09,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:09,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:09,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash 5692544, now seen corresponding path program 1 times [2020-10-15 04:41:09,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:09,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648412860] [2020-10-15 04:41:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:10,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:41:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:41:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-15 04:41:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:10,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:41:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:41:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:10,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:10,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:41:10,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:10,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:10,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648412860] [2020-10-15 04:41:10,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:10,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:10,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069263228] [2020-10-15 04:41:10,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:10,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:10,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:10,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:10,859 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2020-10-15 04:41:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:11,778 INFO L93 Difference]: Finished difference Result 454 states and 774 transitions. [2020-10-15 04:41:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:11,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-15 04:41:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:11,798 INFO L225 Difference]: With dead ends: 454 [2020-10-15 04:41:11,798 INFO L226 Difference]: Without dead ends: 278 [2020-10-15 04:41:11,803 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 [2020-10-15 04:41:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-15 04:41:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-15 04:41:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 04:41:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 417 transitions. [2020-10-15 04:41:11,893 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 417 transitions. Word has length 49 [2020-10-15 04:41:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:11,894 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 417 transitions. [2020-10-15 04:41:11,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 417 transitions. [2020-10-15 04:41:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:41:11,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:11,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:11,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:41:11,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 959478563, now seen corresponding path program 1 times [2020-10-15 04:41:11,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:11,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54599998] [2020-10-15 04:41:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:12,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:41:12,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:41:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-15 04:41:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:12,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:41:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:41:12,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:12,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:12,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:12,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:12,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:12,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54599998] [2020-10-15 04:41:12,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:12,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:12,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506744772] [2020-10-15 04:41:13,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:13,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:13,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:13,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:13,001 INFO L87 Difference]: Start difference. First operand 278 states and 417 transitions. Second operand 4 states. [2020-10-15 04:41:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:13,574 INFO L93 Difference]: Finished difference Result 542 states and 832 transitions. [2020-10-15 04:41:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:13,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:41:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:13,579 INFO L225 Difference]: With dead ends: 542 [2020-10-15 04:41:13,579 INFO L226 Difference]: Without dead ends: 409 [2020-10-15 04:41:13,581 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 [2020-10-15 04:41:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-15 04:41:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-10-15 04:41:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-15 04:41:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 610 transitions. [2020-10-15 04:41:13,613 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 610 transitions. Word has length 66 [2020-10-15 04:41:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:13,613 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 610 transitions. [2020-10-15 04:41:13,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 610 transitions. [2020-10-15 04:41:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 04:41:13,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:13,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:13,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:41:13,623 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:13,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:13,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1194303364, now seen corresponding path program 1 times [2020-10-15 04:41:13,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:13,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603277433] [2020-10-15 04:41:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 04:41:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-15 04:41:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:14,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:41:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:41:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:14,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:14,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603277433] [2020-10-15 04:41:14,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:14,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:14,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285593551] [2020-10-15 04:41:14,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:14,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:14,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:14,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:14,426 INFO L87 Difference]: Start difference. First operand 409 states and 610 transitions. Second operand 4 states. [2020-10-15 04:41:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:15,014 INFO L93 Difference]: Finished difference Result 804 states and 1218 transitions. [2020-10-15 04:41:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:15,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-15 04:41:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:15,021 INFO L225 Difference]: With dead ends: 804 [2020-10-15 04:41:15,021 INFO L226 Difference]: Without dead ends: 540 [2020-10-15 04:41:15,023 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 [2020-10-15 04:41:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-15 04:41:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2020-10-15 04:41:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-15 04:41:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 804 transitions. [2020-10-15 04:41:15,070 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 804 transitions. Word has length 88 [2020-10-15 04:41:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:15,071 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 804 transitions. [2020-10-15 04:41:15,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 804 transitions. [2020-10-15 04:41:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 04:41:15,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:15,076 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, 1, 1] [2020-10-15 04:41:15,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:41:15,076 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:15,077 INFO L82 PathProgramCache]: Analyzing trace with hash -733992563, now seen corresponding path program 1 times [2020-10-15 04:41:15,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:15,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794839122] [2020-10-15 04:41:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 04:41:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-15 04:41:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:18,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:41:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:41:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:18,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:18,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:18,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:18,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:41:18,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794839122] [2020-10-15 04:41:18,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:18,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:18,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111022926] [2020-10-15 04:41:18,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:18,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:18,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:18,702 INFO L87 Difference]: Start difference. First operand 540 states and 804 transitions. Second operand 4 states. [2020-10-15 04:41:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:19,220 INFO L93 Difference]: Finished difference Result 1066 states and 1606 transitions. [2020-10-15 04:41:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:19,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-15 04:41:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:19,225 INFO L225 Difference]: With dead ends: 1066 [2020-10-15 04:41:19,225 INFO L226 Difference]: Without dead ends: 671 [2020-10-15 04:41:19,227 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 [2020-10-15 04:41:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-15 04:41:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2020-10-15 04:41:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-15 04:41:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 999 transitions. [2020-10-15 04:41:19,250 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 999 transitions. Word has length 112 [2020-10-15 04:41:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:19,250 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 999 transitions. [2020-10-15 04:41:19,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 999 transitions. [2020-10-15 04:41:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 04:41:19,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:19,254 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:19,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:41:19,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:19,255 INFO L82 PathProgramCache]: Analyzing trace with hash 919366488, now seen corresponding path program 1 times [2020-10-15 04:41:19,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:19,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523473529] [2020-10-15 04:41:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-15 04:41:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3583 [2020-10-15 04:41:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:22,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:41:22,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:41:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:41:22,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:22,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:22,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:22,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:22,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:22,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:22,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:22,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523473529] [2020-10-15 04:41:22,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:22,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:22,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788695606] [2020-10-15 04:41:23,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:23,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:23,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:23,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:23,001 INFO L87 Difference]: Start difference. First operand 671 states and 999 transitions. Second operand 4 states. [2020-10-15 04:41:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:23,567 INFO L93 Difference]: Finished difference Result 1328 states and 1996 transitions. [2020-10-15 04:41:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:23,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-15 04:41:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:23,574 INFO L225 Difference]: With dead ends: 1328 [2020-10-15 04:41:23,574 INFO L226 Difference]: Without dead ends: 802 [2020-10-15 04:41:23,577 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 [2020-10-15 04:41:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-15 04:41:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2020-10-15 04:41:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-10-15 04:41:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1195 transitions. [2020-10-15 04:41:23,608 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1195 transitions. Word has length 141 [2020-10-15 04:41:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:23,611 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 1195 transitions. [2020-10-15 04:41:23,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1195 transitions. [2020-10-15 04:41:23,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-15 04:41:23,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:23,617 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] [2020-10-15 04:41:23,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:41:23,618 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1817978956, now seen corresponding path program 1 times [2020-10-15 04:41:23,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:23,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108237703] [2020-10-15 04:41:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-15 04:41:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:41:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:28,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:41:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:41:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:29,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 68 proven. 91 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:29,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108237703] [2020-10-15 04:41:29,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:29,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:41:29,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032323717] [2020-10-15 04:41:29,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:41:29,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:41:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:41:29,206 INFO L87 Difference]: Start difference. First operand 802 states and 1195 transitions. Second operand 9 states. [2020-10-15 04:41:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:32,141 INFO L93 Difference]: Finished difference Result 3433 states and 5209 transitions. [2020-10-15 04:41:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:41:32,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-10-15 04:41:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:32,156 INFO L225 Difference]: With dead ends: 3433 [2020-10-15 04:41:32,156 INFO L226 Difference]: Without dead ends: 2645 [2020-10-15 04:41:32,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:41:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2020-10-15 04:41:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 1870. [2020-10-15 04:41:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-10-15 04:41:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2946 transitions. [2020-10-15 04:41:32,237 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2946 transitions. Word has length 172 [2020-10-15 04:41:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:32,237 INFO L479 AbstractCegarLoop]: Abstraction has 1870 states and 2946 transitions. [2020-10-15 04:41:32,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:41:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2946 transitions. [2020-10-15 04:41:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:41:32,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:32,244 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] [2020-10-15 04:41:32,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:41:32,244 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1749063316, now seen corresponding path program 1 times [2020-10-15 04:41:32,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:32,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727125354] [2020-10-15 04:41:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:37,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:41:37,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 04:41:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:37,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:41:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:41:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:37,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:37,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:37,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:41:37,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727125354] [2020-10-15 04:41:37,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:37,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:37,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138359561] [2020-10-15 04:41:37,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:37,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:37,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:37,502 INFO L87 Difference]: Start difference. First operand 1870 states and 2946 transitions. Second operand 5 states. [2020-10-15 04:41:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:39,172 INFO L93 Difference]: Finished difference Result 4976 states and 7778 transitions. [2020-10-15 04:41:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:39,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:41:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:39,190 INFO L225 Difference]: With dead ends: 4976 [2020-10-15 04:41:39,190 INFO L226 Difference]: Without dead ends: 3120 [2020-10-15 04:41:39,197 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 [2020-10-15 04:41:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-10-15 04:41:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2182. [2020-10-15 04:41:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-10-15 04:41:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3474 transitions. [2020-10-15 04:41:39,315 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3474 transitions. Word has length 186 [2020-10-15 04:41:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:39,315 INFO L479 AbstractCegarLoop]: Abstraction has 2182 states and 3474 transitions. [2020-10-15 04:41:39,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3474 transitions. [2020-10-15 04:41:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:41:39,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:39,324 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] [2020-10-15 04:41:39,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:41:39,324 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:39,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1839307374, now seen corresponding path program 1 times [2020-10-15 04:41:39,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:39,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000738051] [2020-10-15 04:41:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:41:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:44,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:44,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-15 04:41:44,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000738051] [2020-10-15 04:41:44,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:44,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:44,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921607956] [2020-10-15 04:41:44,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:44,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:44,489 INFO L87 Difference]: Start difference. First operand 2182 states and 3474 transitions. Second operand 5 states. [2020-10-15 04:41:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:45,689 INFO L93 Difference]: Finished difference Result 3968 states and 6249 transitions. [2020-10-15 04:41:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:45,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:41:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:45,703 INFO L225 Difference]: With dead ends: 3968 [2020-10-15 04:41:45,703 INFO L226 Difference]: Without dead ends: 2832 [2020-10-15 04:41:45,707 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 [2020-10-15 04:41:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-15 04:41:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2296. [2020-10-15 04:41:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-10-15 04:41:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3666 transitions. [2020-10-15 04:41:45,801 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3666 transitions. Word has length 186 [2020-10-15 04:41:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:45,802 INFO L479 AbstractCegarLoop]: Abstraction has 2296 states and 3666 transitions. [2020-10-15 04:41:45,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3666 transitions. [2020-10-15 04:41:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:41:45,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:45,817 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] [2020-10-15 04:41:45,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:45,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash 942009070, now seen corresponding path program 2 times [2020-10-15 04:41:45,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:45,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450240411] [2020-10-15 04:41:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:41:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-15 04:41:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:50,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:41:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:51,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:51,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-15 04:41:51,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450240411] [2020-10-15 04:41:51,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:51,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:51,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017667682] [2020-10-15 04:41:51,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:51,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:51,124 INFO L87 Difference]: Start difference. First operand 2296 states and 3666 transitions. Second operand 5 states. [2020-10-15 04:41:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:51,947 INFO L93 Difference]: Finished difference Result 6823 states and 10887 transitions. [2020-10-15 04:41:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:51,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:41:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:51,970 INFO L225 Difference]: With dead ends: 6823 [2020-10-15 04:41:51,970 INFO L226 Difference]: Without dead ends: 4541 [2020-10-15 04:41:51,977 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 [2020-10-15 04:41:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-10-15 04:41:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4539. [2020-10-15 04:41:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4539 states. [2020-10-15 04:41:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 7189 transitions. [2020-10-15 04:41:52,189 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 7189 transitions. Word has length 186 [2020-10-15 04:41:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:52,190 INFO L479 AbstractCegarLoop]: Abstraction has 4539 states and 7189 transitions. [2020-10-15 04:41:52,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 7189 transitions. [2020-10-15 04:41:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:41:52,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:52,204 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] [2020-10-15 04:41:52,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:52,205 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash -504571796, now seen corresponding path program 1 times [2020-10-15 04:41:52,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:52,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778490847] [2020-10-15 04:41:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:41:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:41:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:57,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 04:41:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:41:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:57,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:57,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:57,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-15 04:41:57,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778490847] [2020-10-15 04:41:57,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:57,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:57,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451600751] [2020-10-15 04:41:57,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:57,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:57,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:57,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:57,432 INFO L87 Difference]: Start difference. First operand 4539 states and 7189 transitions. Second operand 5 states. [2020-10-15 04:41:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:58,543 INFO L93 Difference]: Finished difference Result 8083 states and 12641 transitions. [2020-10-15 04:41:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:58,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:41:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:58,570 INFO L225 Difference]: With dead ends: 8083 [2020-10-15 04:41:58,570 INFO L226 Difference]: Without dead ends: 5609 [2020-10-15 04:41:58,577 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 [2020-10-15 04:41:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2020-10-15 04:41:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 4575. [2020-10-15 04:41:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-10-15 04:41:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7249 transitions. [2020-10-15 04:41:58,743 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7249 transitions. Word has length 186 [2020-10-15 04:41:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:58,743 INFO L479 AbstractCegarLoop]: Abstraction has 4575 states and 7249 transitions. [2020-10-15 04:41:58,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7249 transitions. [2020-10-15 04:41:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:41:58,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:58,761 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] [2020-10-15 04:41:58,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:58,761 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:58,762 INFO L82 PathProgramCache]: Analyzing trace with hash -453418454, now seen corresponding path program 1 times [2020-10-15 04:41:58,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:58,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239057285] [2020-10-15 04:41:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:42:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:42:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:03,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:42:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:42:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:03,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:03,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:03,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:42:03,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239057285] [2020-10-15 04:42:03,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:03,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:03,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909595180] [2020-10-15 04:42:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:03,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:03,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:03,887 INFO L87 Difference]: Start difference. First operand 4575 states and 7249 transitions. Second operand 5 states. [2020-10-15 04:42:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:05,038 INFO L93 Difference]: Finished difference Result 8119 states and 12689 transitions. [2020-10-15 04:42:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:05,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-15 04:42:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:05,067 INFO L225 Difference]: With dead ends: 8119 [2020-10-15 04:42:05,067 INFO L226 Difference]: Without dead ends: 5609 [2020-10-15 04:42:05,075 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 [2020-10-15 04:42:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2020-10-15 04:42:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 4575. [2020-10-15 04:42:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-10-15 04:42:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7249 transitions. [2020-10-15 04:42:05,220 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7249 transitions. Word has length 186 [2020-10-15 04:42:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:05,220 INFO L479 AbstractCegarLoop]: Abstraction has 4575 states and 7249 transitions. [2020-10-15 04:42:05,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7249 transitions. [2020-10-15 04:42:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:42:05,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:05,233 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] [2020-10-15 04:42:05,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:42:05,234 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1040429076, now seen corresponding path program 2 times [2020-10-15 04:42:05,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:05,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449315285] [2020-10-15 04:42:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:42:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:42:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:10,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-15 04:42:10,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449315285] [2020-10-15 04:42:10,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:10,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:10,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017330355] [2020-10-15 04:42:10,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:10,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:10,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:10,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:10,380 INFO L87 Difference]: Start difference. First operand 4575 states and 7249 transitions. Second operand 4 states. [2020-10-15 04:42:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:10,947 INFO L93 Difference]: Finished difference Result 9131 states and 14530 transitions. [2020-10-15 04:42:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:10,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-10-15 04:42:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:10,963 INFO L225 Difference]: With dead ends: 9131 [2020-10-15 04:42:10,963 INFO L226 Difference]: Without dead ends: 5334 [2020-10-15 04:42:10,972 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 [2020-10-15 04:42:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2020-10-15 04:42:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5334. [2020-10-15 04:42:11,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5334 states. [2020-10-15 04:42:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8457 transitions. [2020-10-15 04:42:11,115 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8457 transitions. Word has length 186 [2020-10-15 04:42:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:11,116 INFO L479 AbstractCegarLoop]: Abstraction has 5334 states and 8457 transitions. [2020-10-15 04:42:11,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:11,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8457 transitions. [2020-10-15 04:42:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-15 04:42:11,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:11,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:11,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:42:11,131 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1392023604, now seen corresponding path program 1 times [2020-10-15 04:42:11,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:11,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643002606] [2020-10-15 04:42:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-15 04:42:16,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 04:42:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:16,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 04:42:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:42:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:16,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-15 04:42:16,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643002606] [2020-10-15 04:42:16,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:16,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:16,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513296338] [2020-10-15 04:42:16,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:16,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:16,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:16,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:16,295 INFO L87 Difference]: Start difference. First operand 5334 states and 8457 transitions. Second operand 5 states. [2020-10-15 04:42:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:17,326 INFO L93 Difference]: Finished difference Result 9468 states and 14791 transitions. [2020-10-15 04:42:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:17,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-15 04:42:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:17,343 INFO L225 Difference]: With dead ends: 9468 [2020-10-15 04:42:17,343 INFO L226 Difference]: Without dead ends: 6540 [2020-10-15 04:42:17,350 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 [2020-10-15 04:42:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2020-10-15 04:42:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 5390. [2020-10-15 04:42:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5390 states. [2020-10-15 04:42:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 8541 transitions. [2020-10-15 04:42:17,485 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 8541 transitions. Word has length 218 [2020-10-15 04:42:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:17,486 INFO L479 AbstractCegarLoop]: Abstraction has 5390 states and 8541 transitions. [2020-10-15 04:42:17,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 8541 transitions. [2020-10-15 04:42:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-15 04:42:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:17,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:17,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:42:17,500 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1208706576, now seen corresponding path program 2 times [2020-10-15 04:42:17,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:17,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972345553] [2020-10-15 04:42:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-15 04:42:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:42:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:22,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:42:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:22,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:22,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:22,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:42:22,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972345553] [2020-10-15 04:42:22,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:22,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:22,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745226664] [2020-10-15 04:42:22,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:22,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:22,739 INFO L87 Difference]: Start difference. First operand 5390 states and 8541 transitions. Second operand 5 states. [2020-10-15 04:42:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:23,772 INFO L93 Difference]: Finished difference Result 9524 states and 14861 transitions. [2020-10-15 04:42:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:23,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-15 04:42:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:23,791 INFO L225 Difference]: With dead ends: 9524 [2020-10-15 04:42:23,791 INFO L226 Difference]: Without dead ends: 6540 [2020-10-15 04:42:23,798 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 [2020-10-15 04:42:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2020-10-15 04:42:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 5418. [2020-10-15 04:42:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5418 states. [2020-10-15 04:42:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 8583 transitions. [2020-10-15 04:42:23,936 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 8583 transitions. Word has length 218 [2020-10-15 04:42:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:23,936 INFO L479 AbstractCegarLoop]: Abstraction has 5418 states and 8583 transitions. [2020-10-15 04:42:23,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 8583 transitions. [2020-10-15 04:42:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-15 04:42:23,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:23,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:23,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:42:23,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash 980016780, now seen corresponding path program 3 times [2020-10-15 04:42:23,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418892153] [2020-10-15 04:42:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:29,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:29,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-15 04:42:29,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 04:42:29,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:29,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-15 04:42:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:42:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:42:29,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418892153] [2020-10-15 04:42:29,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:29,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:29,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672325909] [2020-10-15 04:42:29,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:29,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:29,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:29,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:29,117 INFO L87 Difference]: Start difference. First operand 5418 states and 8583 transitions. Second operand 4 states. [2020-10-15 04:42:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:29,676 INFO L93 Difference]: Finished difference Result 10817 states and 17198 transitions. [2020-10-15 04:42:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:29,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-10-15 04:42:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:29,692 INFO L225 Difference]: With dead ends: 10817 [2020-10-15 04:42:29,692 INFO L226 Difference]: Without dead ends: 6189 [2020-10-15 04:42:29,702 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 [2020-10-15 04:42:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6189 states. [2020-10-15 04:42:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6189 to 6189. [2020-10-15 04:42:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6189 states. [2020-10-15 04:42:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 9813 transitions. [2020-10-15 04:42:29,888 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 9813 transitions. Word has length 218 [2020-10-15 04:42:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:29,889 INFO L479 AbstractCegarLoop]: Abstraction has 6189 states and 9813 transitions. [2020-10-15 04:42:29,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 9813 transitions. [2020-10-15 04:42:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-15 04:42:29,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:29,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:29,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:42:29,908 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1145716322, now seen corresponding path program 1 times [2020-10-15 04:42:29,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:29,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206855086] [2020-10-15 04:42:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:34,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:42:34,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:42:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:35,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:42:35,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206855086] [2020-10-15 04:42:35,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:35,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:35,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281228284] [2020-10-15 04:42:35,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:35,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:35,088 INFO L87 Difference]: Start difference. First operand 6189 states and 9813 transitions. Second operand 4 states. [2020-10-15 04:42:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:35,721 INFO L93 Difference]: Finished difference Result 12359 states and 19658 transitions. [2020-10-15 04:42:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:35,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2020-10-15 04:42:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:35,733 INFO L225 Difference]: With dead ends: 12359 [2020-10-15 04:42:35,734 INFO L226 Difference]: Without dead ends: 6960 [2020-10-15 04:42:35,744 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 [2020-10-15 04:42:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2020-10-15 04:42:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6960. [2020-10-15 04:42:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6960 states. [2020-10-15 04:42:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 11047 transitions. [2020-10-15 04:42:35,916 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 11047 transitions. Word has length 220 [2020-10-15 04:42:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:35,917 INFO L479 AbstractCegarLoop]: Abstraction has 6960 states and 11047 transitions. [2020-10-15 04:42:35,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 11047 transitions. [2020-10-15 04:42:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-15 04:42:35,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:35,932 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:35,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:42:35,933 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash 527371991, now seen corresponding path program 1 times [2020-10-15 04:42:35,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:35,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480904233] [2020-10-15 04:42:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:41,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-15 04:42:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:42:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:41,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:41,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2020-10-15 04:42:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480904233] [2020-10-15 04:42:41,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:41,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:41,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714374419] [2020-10-15 04:42:41,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:41,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:41,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:41,135 INFO L87 Difference]: Start difference. First operand 6960 states and 11047 transitions. Second operand 4 states. [2020-10-15 04:42:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:41,724 INFO L93 Difference]: Finished difference Result 13901 states and 22126 transitions. [2020-10-15 04:42:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:41,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2020-10-15 04:42:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:41,739 INFO L225 Difference]: With dead ends: 13901 [2020-10-15 04:42:41,740 INFO L226 Difference]: Without dead ends: 7731 [2020-10-15 04:42:41,752 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 [2020-10-15 04:42:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2020-10-15 04:42:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 7731. [2020-10-15 04:42:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7731 states. [2020-10-15 04:42:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 12285 transitions. [2020-10-15 04:42:41,942 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 12285 transitions. Word has length 253 [2020-10-15 04:42:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:41,943 INFO L479 AbstractCegarLoop]: Abstraction has 7731 states and 12285 transitions. [2020-10-15 04:42:41,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 12285 transitions. [2020-10-15 04:42:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-15 04:42:41,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:41,962 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:41,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:42:41,962 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:41,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1612326470, now seen corresponding path program 1 times [2020-10-15 04:42:41,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:41,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837208940] [2020-10-15 04:42:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-15 04:42:47,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:47,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:42:47,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:42:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:42:47,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-15 04:42:47,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837208940] [2020-10-15 04:42:47,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:47,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:47,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428033936] [2020-10-15 04:42:47,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:47,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:47,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:47,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:47,203 INFO L87 Difference]: Start difference. First operand 7731 states and 12285 transitions. Second operand 5 states. [2020-10-15 04:42:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:48,263 INFO L93 Difference]: Finished difference Result 13635 states and 21321 transitions. [2020-10-15 04:42:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:48,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-15 04:42:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:48,282 INFO L225 Difference]: With dead ends: 13635 [2020-10-15 04:42:48,283 INFO L226 Difference]: Without dead ends: 9333 [2020-10-15 04:42:48,293 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 [2020-10-15 04:42:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-10-15 04:42:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7831. [2020-10-15 04:42:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-15 04:42:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 12465 transitions. [2020-10-15 04:42:48,503 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 12465 transitions. Word has length 288 [2020-10-15 04:42:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:48,504 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 12465 transitions. [2020-10-15 04:42:48,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 12465 transitions. [2020-10-15 04:42:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-15 04:42:48,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:48,518 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:48,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:42:48,519 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:48,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1298741498, now seen corresponding path program 1 times [2020-10-15 04:42:48,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:48,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605717597] [2020-10-15 04:42:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:50,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-15 04:42:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:42:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2020-10-15 04:42:50,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605717597] [2020-10-15 04:42:50,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:50,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:50,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547095306] [2020-10-15 04:42:50,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:50,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:50,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:50,780 INFO L87 Difference]: Start difference. First operand 7831 states and 12465 transitions. Second operand 4 states. [2020-10-15 04:42:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:51,660 INFO L93 Difference]: Finished difference Result 15619 states and 24926 transitions. [2020-10-15 04:42:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:51,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 288 [2020-10-15 04:42:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:51,675 INFO L225 Difference]: With dead ends: 15619 [2020-10-15 04:42:51,676 INFO L226 Difference]: Without dead ends: 8588 [2020-10-15 04:42:51,688 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 [2020-10-15 04:42:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2020-10-15 04:42:51,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 8588. [2020-10-15 04:42:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8588 states. [2020-10-15 04:42:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8588 states to 8588 states and 13657 transitions. [2020-10-15 04:42:51,882 INFO L78 Accepts]: Start accepts. Automaton has 8588 states and 13657 transitions. Word has length 288 [2020-10-15 04:42:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:51,883 INFO L479 AbstractCegarLoop]: Abstraction has 8588 states and 13657 transitions. [2020-10-15 04:42:51,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8588 states and 13657 transitions. [2020-10-15 04:42:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-15 04:42:51,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:51,895 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 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] [2020-10-15 04:42:51,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:42:51,896 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2087030891, now seen corresponding path program 1 times [2020-10-15 04:42:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:51,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915153947] [2020-10-15 04:42:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:42:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-15 04:42:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 304 proven. 582 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:42:57,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915153947] [2020-10-15 04:42:57,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:57,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 04:42:57,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620699161] [2020-10-15 04:42:57,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:42:57,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:42:57,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:42:57,864 INFO L87 Difference]: Start difference. First operand 8588 states and 13657 transitions. Second operand 13 states. [2020-10-15 04:43:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:02,726 INFO L93 Difference]: Finished difference Result 24237 states and 38213 transitions. [2020-10-15 04:43:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 04:43:02,727 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 327 [2020-10-15 04:43:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:02,748 INFO L225 Difference]: With dead ends: 24237 [2020-10-15 04:43:02,749 INFO L226 Difference]: Without dead ends: 15668 [2020-10-15 04:43:02,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-15 04:43:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15668 states. [2020-10-15 04:43:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15668 to 12323. [2020-10-15 04:43:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12323 states. [2020-10-15 04:43:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 19660 transitions. [2020-10-15 04:43:03,089 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 19660 transitions. Word has length 327 [2020-10-15 04:43:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:03,090 INFO L479 AbstractCegarLoop]: Abstraction has 12323 states and 19660 transitions. [2020-10-15 04:43:03,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 04:43:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 19660 transitions. [2020-10-15 04:43:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-15 04:43:03,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:03,108 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 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] [2020-10-15 04:43:03,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:43:03,108 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1663384169, now seen corresponding path program 1 times [2020-10-15 04:43:03,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:03,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620946458] [2020-10-15 04:43:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-15 04:43:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:43:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-15 04:43:08,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620946458] [2020-10-15 04:43:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:08,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:08,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685963189] [2020-10-15 04:43:08,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:08,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:08,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:08,341 INFO L87 Difference]: Start difference. First operand 12323 states and 19660 transitions. Second operand 4 states. [2020-10-15 04:43:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:08,989 INFO L93 Difference]: Finished difference Result 23844 states and 38079 transitions. [2020-10-15 04:43:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:08,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-15 04:43:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:09,003 INFO L225 Difference]: With dead ends: 23844 [2020-10-15 04:43:09,003 INFO L226 Difference]: Without dead ends: 12763 [2020-10-15 04:43:09,016 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 [2020-10-15 04:43:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12763 states. [2020-10-15 04:43:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12763 to 12763. [2020-10-15 04:43:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12763 states. [2020-10-15 04:43:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12763 states to 12763 states and 20349 transitions. [2020-10-15 04:43:09,280 INFO L78 Accepts]: Start accepts. Automaton has 12763 states and 20349 transitions. Word has length 327 [2020-10-15 04:43:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:09,280 INFO L479 AbstractCegarLoop]: Abstraction has 12763 states and 20349 transitions. [2020-10-15 04:43:09,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12763 states and 20349 transitions. [2020-10-15 04:43:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-15 04:43:09,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:09,296 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:09,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:43:09,296 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash -610758599, now seen corresponding path program 1 times [2020-10-15 04:43:09,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:09,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055639913] [2020-10-15 04:43:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-15 04:43:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:43:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:14,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:14,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2020-10-15 04:43:14,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055639913] [2020-10-15 04:43:14,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:14,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:14,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143330234] [2020-10-15 04:43:14,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:14,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:14,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:14,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:14,523 INFO L87 Difference]: Start difference. First operand 12763 states and 20349 transitions. Second operand 4 states. [2020-10-15 04:43:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:15,179 INFO L93 Difference]: Finished difference Result 18033 states and 28706 transitions. [2020-10-15 04:43:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:15,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2020-10-15 04:43:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:15,196 INFO L225 Difference]: With dead ends: 18033 [2020-10-15 04:43:15,197 INFO L226 Difference]: Without dead ends: 13203 [2020-10-15 04:43:15,205 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 [2020-10-15 04:43:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2020-10-15 04:43:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 13203. [2020-10-15 04:43:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13203 states. [2020-10-15 04:43:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 21056 transitions. [2020-10-15 04:43:15,454 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 21056 transitions. Word has length 368 [2020-10-15 04:43:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:15,455 INFO L479 AbstractCegarLoop]: Abstraction has 13203 states and 21056 transitions. [2020-10-15 04:43:15,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 21056 transitions. [2020-10-15 04:43:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:15,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:15,473 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:15,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:43:15,473 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1083653865, now seen corresponding path program 1 times [2020-10-15 04:43:15,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:15,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831372481] [2020-10-15 04:43:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5282 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 368 [2020-10-15 04:43:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 298 proven. 918 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-15 04:43:21,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831372481] [2020-10-15 04:43:21,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:21,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:43:21,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424893040] [2020-10-15 04:43:21,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:43:21,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:21,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:43:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:43:21,770 INFO L87 Difference]: Start difference. First operand 13203 states and 21056 transitions. Second operand 12 states. [2020-10-15 04:43:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:25,283 INFO L93 Difference]: Finished difference Result 37303 states and 59086 transitions. [2020-10-15 04:43:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:43:25,284 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 411 [2020-10-15 04:43:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:25,315 INFO L225 Difference]: With dead ends: 37303 [2020-10-15 04:43:25,315 INFO L226 Difference]: Without dead ends: 24226 [2020-10-15 04:43:25,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:43:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24226 states. [2020-10-15 04:43:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24226 to 23188. [2020-10-15 04:43:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23188 states. [2020-10-15 04:43:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23188 states to 23188 states and 36933 transitions. [2020-10-15 04:43:25,872 INFO L78 Accepts]: Start accepts. Automaton has 23188 states and 36933 transitions. Word has length 411 [2020-10-15 04:43:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:25,872 INFO L479 AbstractCegarLoop]: Abstraction has 23188 states and 36933 transitions. [2020-10-15 04:43:25,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:43:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 23188 states and 36933 transitions. [2020-10-15 04:43:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:25,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:25,898 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:25,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:43:25,899 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash -660007143, now seen corresponding path program 1 times [2020-10-15 04:43:25,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:25,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021509561] [2020-10-15 04:43:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-15 04:43:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:31,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:31,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:31,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:31,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 32 proven. 758 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-15 04:43:32,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021509561] [2020-10-15 04:43:32,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:32,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:32,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606687400] [2020-10-15 04:43:32,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:32,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:32,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:32,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:32,521 INFO L87 Difference]: Start difference. First operand 23188 states and 36933 transitions. Second operand 11 states. [2020-10-15 04:43:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:35,519 INFO L93 Difference]: Finished difference Result 39884 states and 62672 transitions. [2020-10-15 04:43:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:43:35,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 411 [2020-10-15 04:43:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:35,561 INFO L225 Difference]: With dead ends: 39884 [2020-10-15 04:43:35,561 INFO L226 Difference]: Without dead ends: 34174 [2020-10-15 04:43:35,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:43:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34174 states. [2020-10-15 04:43:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34174 to 27765. [2020-10-15 04:43:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27765 states. [2020-10-15 04:43:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27765 states to 27765 states and 44224 transitions. [2020-10-15 04:43:36,215 INFO L78 Accepts]: Start accepts. Automaton has 27765 states and 44224 transitions. Word has length 411 [2020-10-15 04:43:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:36,216 INFO L479 AbstractCegarLoop]: Abstraction has 27765 states and 44224 transitions. [2020-10-15 04:43:36,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 27765 states and 44224 transitions. [2020-10-15 04:43:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:43:36,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:36,242 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:36,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:43:36,242 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 913001375, now seen corresponding path program 1 times [2020-10-15 04:43:36,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:36,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920186461] [2020-10-15 04:43:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:43:41,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:43:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:43:41,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:43:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:43:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-15 04:43:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 1063 proven. 103 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-15 04:43:42,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920186461] [2020-10-15 04:43:42,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:42,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:42,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974421294] [2020-10-15 04:43:42,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:42,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:42,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:42,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:42,272 INFO L87 Difference]: Start difference. First operand 27765 states and 44224 transitions. Second operand 11 states. [2020-10-15 04:43:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:47,576 INFO L93 Difference]: Finished difference Result 106478 states and 168915 transitions. [2020-10-15 04:43:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 04:43:47,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 412 [2020-10-15 04:43:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:47,678 INFO L225 Difference]: With dead ends: 106478 [2020-10-15 04:43:47,679 INFO L226 Difference]: Without dead ends: 78839 [2020-10-15 04:43:47,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:43:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78839 states. [2020-10-15 04:43:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78839 to 42650. [2020-10-15 04:43:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42650 states. [2020-10-15 04:43:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42650 states to 42650 states and 68349 transitions. [2020-10-15 04:43:48,924 INFO L78 Accepts]: Start accepts. Automaton has 42650 states and 68349 transitions. Word has length 412 [2020-10-15 04:43:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:48,924 INFO L479 AbstractCegarLoop]: Abstraction has 42650 states and 68349 transitions. [2020-10-15 04:43:48,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 42650 states and 68349 transitions. [2020-10-15 04:43:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:43:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:48,962 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:48,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:43:48,962 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash 206404769, now seen corresponding path program 1 times [2020-10-15 04:43:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513718620] [2020-10-15 04:43:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:54,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:43:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2020-10-15 04:43:54,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513718620] [2020-10-15 04:43:54,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:54,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:54,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468814144] [2020-10-15 04:43:54,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:54,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:54,297 INFO L87 Difference]: Start difference. First operand 42650 states and 68349 transitions. Second operand 5 states. [2020-10-15 04:43:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:56,158 INFO L93 Difference]: Finished difference Result 58555 states and 93540 transitions. [2020-10-15 04:43:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:56,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2020-10-15 04:43:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:56,214 INFO L225 Difference]: With dead ends: 58555 [2020-10-15 04:43:56,214 INFO L226 Difference]: Without dead ends: 44594 [2020-10-15 04:43:56,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44594 states. [2020-10-15 04:43:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44594 to 42650. [2020-10-15 04:43:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42650 states. [2020-10-15 04:43:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42650 states to 42650 states and 68323 transitions. [2020-10-15 04:43:57,273 INFO L78 Accepts]: Start accepts. Automaton has 42650 states and 68323 transitions. Word has length 412 [2020-10-15 04:43:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:57,273 INFO L479 AbstractCegarLoop]: Abstraction has 42650 states and 68323 transitions. [2020-10-15 04:43:57,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 42650 states and 68323 transitions. [2020-10-15 04:43:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:43:57,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:57,313 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:57,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:43:57,314 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash -87838882, now seen corresponding path program 1 times [2020-10-15 04:43:57,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:57,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198236508] [2020-10-15 04:43:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:44:02,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-15 04:44:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:44:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-15 04:44:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:02,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 750 proven. 233 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2020-10-15 04:44:03,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198236508] [2020-10-15 04:44:03,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:03,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:44:03,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33916916] [2020-10-15 04:44:03,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:44:03,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:44:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:44:03,139 INFO L87 Difference]: Start difference. First operand 42650 states and 68323 transitions. Second operand 12 states. [2020-10-15 04:44:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:08,024 INFO L93 Difference]: Finished difference Result 81077 states and 128627 transitions. [2020-10-15 04:44:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:44:08,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 412 [2020-10-15 04:44:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:08,110 INFO L225 Difference]: With dead ends: 81077 [2020-10-15 04:44:08,110 INFO L226 Difference]: Without dead ends: 67116 [2020-10-15 04:44:08,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:44:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67116 states. [2020-10-15 04:44:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67116 to 55659. [2020-10-15 04:44:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55659 states. [2020-10-15 04:44:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55659 states to 55659 states and 89521 transitions. [2020-10-15 04:44:09,820 INFO L78 Accepts]: Start accepts. Automaton has 55659 states and 89521 transitions. Word has length 412 [2020-10-15 04:44:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:09,821 INFO L479 AbstractCegarLoop]: Abstraction has 55659 states and 89521 transitions. [2020-10-15 04:44:09,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:44:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 55659 states and 89521 transitions. [2020-10-15 04:44:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:44:09,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:09,871 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:09,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:44:09,872 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1612494235, now seen corresponding path program 1 times [2020-10-15 04:44:09,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:09,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370895045] [2020-10-15 04:44:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-15 04:44:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:44:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:15,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:15,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-10-15 04:44:15,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370895045] [2020-10-15 04:44:15,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:15,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:15,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721155793] [2020-10-15 04:44:15,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:15,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:15,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:15,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:15,198 INFO L87 Difference]: Start difference. First operand 55659 states and 89521 transitions. Second operand 5 states. [2020-10-15 04:44:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:18,557 INFO L93 Difference]: Finished difference Result 114696 states and 182451 transitions. [2020-10-15 04:44:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:18,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2020-10-15 04:44:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:18,663 INFO L225 Difference]: With dead ends: 114696 [2020-10-15 04:44:18,663 INFO L226 Difference]: Without dead ends: 87050 [2020-10-15 04:44:18,701 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 [2020-10-15 04:44:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87050 states. [2020-10-15 04:44:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87050 to 69390. [2020-10-15 04:44:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69390 states. [2020-10-15 04:44:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69390 states to 69390 states and 114868 transitions. [2020-10-15 04:44:22,351 INFO L78 Accepts]: Start accepts. Automaton has 69390 states and 114868 transitions. Word has length 412 [2020-10-15 04:44:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:22,352 INFO L479 AbstractCegarLoop]: Abstraction has 69390 states and 114868 transitions. [2020-10-15 04:44:22,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 69390 states and 114868 transitions. [2020-10-15 04:44:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:44:22,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:22,415 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:22,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:44:22,416 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 905897629, now seen corresponding path program 1 times [2020-10-15 04:44:22,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:22,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622746652] [2020-10-15 04:44:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:27,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:44:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:44:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:27,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-15 04:44:27,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622746652] [2020-10-15 04:44:27,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:27,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:27,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15334334] [2020-10-15 04:44:27,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:27,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:27,657 INFO L87 Difference]: Start difference. First operand 69390 states and 114868 transitions. Second operand 5 states. [2020-10-15 04:44:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:30,313 INFO L93 Difference]: Finished difference Result 105530 states and 173948 transitions. [2020-10-15 04:44:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:30,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2020-10-15 04:44:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:30,402 INFO L225 Difference]: With dead ends: 105530 [2020-10-15 04:44:30,402 INFO L226 Difference]: Without dead ends: 72776 [2020-10-15 04:44:30,437 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 [2020-10-15 04:44:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72776 states. [2020-10-15 04:44:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72776 to 69548. [2020-10-15 04:44:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69548 states. [2020-10-15 04:44:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69548 states to 69548 states and 115114 transitions. [2020-10-15 04:44:32,685 INFO L78 Accepts]: Start accepts. Automaton has 69548 states and 115114 transitions. Word has length 412 [2020-10-15 04:44:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:32,685 INFO L479 AbstractCegarLoop]: Abstraction has 69548 states and 115114 transitions. [2020-10-15 04:44:32,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 69548 states and 115114 transitions. [2020-10-15 04:44:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:44:32,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:32,746 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:32,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:44:32,747 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash -201333344, now seen corresponding path program 2 times [2020-10-15 04:44:32,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:32,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698651953] [2020-10-15 04:44:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:44:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:37,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:37,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:37,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:37,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:44:37,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:37,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-15 04:44:38,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698651953] [2020-10-15 04:44:38,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:38,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:38,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756917486] [2020-10-15 04:44:38,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:38,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:38,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:38,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:38,044 INFO L87 Difference]: Start difference. First operand 69548 states and 115114 transitions. Second operand 5 states.