/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.15.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:42:27,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:42:27,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:42:27,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:42:27,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:42:27,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:42:27,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:42:27,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:42:27,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:42:27,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:42:27,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:42:27,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:42:27,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:42:27,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:42:27,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:42:27,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:42:27,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:42:27,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:42:27,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:42:27,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:42:28,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:42:28,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:42:28,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:42:28,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:42:28,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:42:28,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:42:28,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:42:28,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:42:28,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:42:28,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:42:28,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:42:28,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:42:28,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:42:28,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:42:28,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:42:28,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:42:28,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:42:28,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:42:28,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:42:28,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:42:28,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:42:28,017 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 04:42:28,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:42:28,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:42:28,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:42:28,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:42:28,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:42:28,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:42:28,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:42:28,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:42:28,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:42:28,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:42:28,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:42:28,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:42:28,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:42:28,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:42:28,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:42:28,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:42:28,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:42:28,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:42:28,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:42:28,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:42:28,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:42:28,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:42:28,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:42:28,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:42:28,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:42:28,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:42:28,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:42:28,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:42:28,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:42:28,057 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 04:42:28,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:42:28,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:42:28,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:42:28,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:42:28,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:42:28,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-15 04:42:28,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/688b1429f/571ad16ad3eb488e8a023f6cdd4b6716/FLAGbdd550a1e [2020-10-15 04:42:29,009 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:42:29,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-15 04:42:29,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/688b1429f/571ad16ad3eb488e8a023f6cdd4b6716/FLAGbdd550a1e [2020-10-15 04:42:29,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/688b1429f/571ad16ad3eb488e8a023f6cdd4b6716 [2020-10-15 04:42:29,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:42:29,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:42:29,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:42:29,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:42:29,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:42:29,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:29" (1/1) ... [2020-10-15 04:42:29,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a3fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:29, skipping insertion in model container [2020-10-15 04:42:29,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:29" (1/1) ... [2020-10-15 04:42:29,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:42:29,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:42:30,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:42:30,033 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:42:30,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:42:30,230 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:42:30,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30 WrapperNode [2020-10-15 04:42:30,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:42:30,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:42:30,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:42:30,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:42:30,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (1/1) ... [2020-10-15 04:42:30,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:42:30,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:42:30,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:42:30,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:42:30,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (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 04:42:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:42:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:42:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:42:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:42:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:42:30,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:42:30,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:42:30,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:42:30,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:42:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:42:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:42:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:42:30,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:42:30,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:42:30,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:42:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:42:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:42:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:42:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:42:30,447 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:42:30,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:42:30,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:42:30,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:42:30,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:42:30,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:42:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:42:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:42:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:42:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:42:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:42:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:42:30,990 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:42:31,614 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:42:31,614 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:42:31,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:42:31,637 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:42:31,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:31 BoogieIcfgContainer [2020-10-15 04:42:31,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:42:31,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:42:31,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:42:31,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:42:31,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:42:29" (1/3) ... [2020-10-15 04:42:31,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594090b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:31, skipping insertion in model container [2020-10-15 04:42:31,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:30" (2/3) ... [2020-10-15 04:42:31,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594090b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:31, skipping insertion in model container [2020-10-15 04:42:31,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:31" (3/3) ... [2020-10-15 04:42:31,651 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2020-10-15 04:42:31,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:42:31,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:42:31,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:42:31,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:42:31,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:42:31,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:42:31,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:42:31,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:42:31,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:42:31,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:42:31,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:42:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-15 04:42:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 04:42:31,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:31,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:31,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash -707159307, now seen corresponding path program 1 times [2020-10-15 04:42:31,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:31,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524377561] [2020-10-15 04:42:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 04:42:33,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-15 04:42:33,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:42:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:42:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:42:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:33,200 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 04:42:33,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524377561] [2020-10-15 04:42:33,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:33,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:33,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074938674] [2020-10-15 04:42:33,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:33,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:33,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:33,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:33,227 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-15 04:42:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:33,990 INFO L93 Difference]: Finished difference Result 448 states and 762 transitions. [2020-10-15 04:42:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:33,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-15 04:42:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:34,008 INFO L225 Difference]: With dead ends: 448 [2020-10-15 04:42:34,009 INFO L226 Difference]: Without dead ends: 274 [2020-10-15 04:42:34,014 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 04:42:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-15 04:42:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-15 04:42:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 04:42:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 411 transitions. [2020-10-15 04:42:34,081 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 411 transitions. Word has length 50 [2020-10-15 04:42:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:34,082 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 411 transitions. [2020-10-15 04:42:34,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 411 transitions. [2020-10-15 04:42:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 04:42:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:34,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:34,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:42:34,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1220871807, now seen corresponding path program 1 times [2020-10-15 04:42:34,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:34,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854211811] [2020-10-15 04:42:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:34,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:42:34,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-15 04:42:34,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:34,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:42:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:42:34,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:35,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:42:35,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:35,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:35,084 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 04:42:35,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854211811] [2020-10-15 04:42:35,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:35,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:35,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334062360] [2020-10-15 04:42:35,088 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 04:42:35,089 INFO L87 Difference]: Start difference. First operand 274 states and 411 transitions. Second operand 4 states. [2020-10-15 04:42:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:35,681 INFO L93 Difference]: Finished difference Result 534 states and 818 transitions. [2020-10-15 04:42:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:35,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 04:42:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:35,686 INFO L225 Difference]: With dead ends: 534 [2020-10-15 04:42:35,687 INFO L226 Difference]: Without dead ends: 403 [2020-10-15 04:42:35,689 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 04:42:35,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-15 04:42:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-10-15 04:42:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-15 04:42:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 602 transitions. [2020-10-15 04:42:35,722 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 602 transitions. Word has length 67 [2020-10-15 04:42:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:35,722 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 602 transitions. [2020-10-15 04:42:35,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 602 transitions. [2020-10-15 04:42:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:42:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:35,736 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, 1] [2020-10-15 04:42:35,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:42:35,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1874706857, now seen corresponding path program 1 times [2020-10-15 04:42:35,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:35,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952863331] [2020-10-15 04:42:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 04:42:36,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-15 04:42:36,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:36,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:42:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:42:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:42:36,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:36,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:36,661 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 04:42:36,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952863331] [2020-10-15 04:42:36,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:36,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:36,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053825244] [2020-10-15 04:42:36,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:36,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:36,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:36,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:36,664 INFO L87 Difference]: Start difference. First operand 403 states and 602 transitions. Second operand 4 states. [2020-10-15 04:42:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:37,204 INFO L93 Difference]: Finished difference Result 792 states and 1200 transitions. [2020-10-15 04:42:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:37,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-15 04:42:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:37,210 INFO L225 Difference]: With dead ends: 792 [2020-10-15 04:42:37,210 INFO L226 Difference]: Without dead ends: 532 [2020-10-15 04:42:37,212 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 04:42:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-15 04:42:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2020-10-15 04:42:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-15 04:42:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 794 transitions. [2020-10-15 04:42:37,248 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 794 transitions. Word has length 89 [2020-10-15 04:42:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:37,249 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 794 transitions. [2020-10-15 04:42:37,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 794 transitions. [2020-10-15 04:42:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-15 04:42:37,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:37,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:37,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:42:37,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:37,260 INFO L82 PathProgramCache]: Analyzing trace with hash -232991733, now seen corresponding path program 1 times [2020-10-15 04:42:37,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:37,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397916744] [2020-10-15 04:42:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:37,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:42:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-15 04:42:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:38,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-15 04:42:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:42:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:38,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:38,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:38,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:42:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:38,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:42:38,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397916744] [2020-10-15 04:42:38,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:38,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:38,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148299999] [2020-10-15 04:42:38,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:38,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:38,350 INFO L87 Difference]: Start difference. First operand 532 states and 794 transitions. Second operand 4 states. [2020-10-15 04:42:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:38,879 INFO L93 Difference]: Finished difference Result 1050 states and 1584 transitions. [2020-10-15 04:42:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:38,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-15 04:42:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:38,886 INFO L225 Difference]: With dead ends: 1050 [2020-10-15 04:42:38,887 INFO L226 Difference]: Without dead ends: 661 [2020-10-15 04:42:38,888 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 04:42:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-15 04:42:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2020-10-15 04:42:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-15 04:42:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 987 transitions. [2020-10-15 04:42:38,910 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 987 transitions. Word has length 130 [2020-10-15 04:42:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:38,912 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 987 transitions. [2020-10-15 04:42:38,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 987 transitions. [2020-10-15 04:42:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 04:42:38,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:38,921 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:38,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:42:38,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash -185140501, now seen corresponding path program 1 times [2020-10-15 04:42:38,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:38,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544865458] [2020-10-15 04:42:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:44,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 04:42:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:42:44,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:44,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:42:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:42:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:44,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:42:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 174 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:42:44,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544865458] [2020-10-15 04:42:44,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:44,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:42:44,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814160087] [2020-10-15 04:42:44,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:42:44,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:42:44,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:42:44,692 INFO L87 Difference]: Start difference. First operand 661 states and 987 transitions. Second operand 11 states. [2020-10-15 04:42:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:48,159 INFO L93 Difference]: Finished difference Result 3341 states and 5079 transitions. [2020-10-15 04:42:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:42:48,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-10-15 04:42:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:48,178 INFO L225 Difference]: With dead ends: 3341 [2020-10-15 04:42:48,179 INFO L226 Difference]: Without dead ends: 2694 [2020-10-15 04:42:48,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 04:42:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-10-15 04:42:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1983. [2020-10-15 04:42:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-10-15 04:42:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 3127 transitions. [2020-10-15 04:42:48,265 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 3127 transitions. Word has length 173 [2020-10-15 04:42:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:48,266 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 3127 transitions. [2020-10-15 04:42:48,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:42:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 3127 transitions. [2020-10-15 04:42:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:42:48,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:48,276 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:48,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:42:48,276 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1239618394, now seen corresponding path program 1 times [2020-10-15 04:42:48,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:48,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839119119] [2020-10-15 04:42:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:42:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:42:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:42:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:53,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:53,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:42:53,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839119119] [2020-10-15 04:42:53,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:53,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:53,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83850840] [2020-10-15 04:42:53,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:53,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:53,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:53,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:53,534 INFO L87 Difference]: Start difference. First operand 1983 states and 3127 transitions. Second operand 5 states. [2020-10-15 04:42:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:55,021 INFO L93 Difference]: Finished difference Result 3322 states and 5196 transitions. [2020-10-15 04:42:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:55,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:42:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:55,036 INFO L225 Difference]: With dead ends: 3322 [2020-10-15 04:42:55,036 INFO L226 Difference]: Without dead ends: 2515 [2020-10-15 04:42:55,039 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 04:42:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2020-10-15 04:42:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2078. [2020-10-15 04:42:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-15 04:42:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3287 transitions. [2020-10-15 04:42:55,136 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3287 transitions. Word has length 187 [2020-10-15 04:42:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 2078 states and 3287 transitions. [2020-10-15 04:42:55,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3287 transitions. [2020-10-15 04:42:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:42:55,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:55,143 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:55,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:42:55,144 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:55,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1224081692, now seen corresponding path program 2 times [2020-10-15 04:42:55,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:55,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72914838] [2020-10-15 04:42:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:43:00,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:00,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:43:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:43:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:43:00,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:00,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-15 04:43:00,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72914838] [2020-10-15 04:43:00,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:00,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:00,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521496734] [2020-10-15 04:43:00,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:00,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:00,432 INFO L87 Difference]: Start difference. First operand 2078 states and 3287 transitions. Second operand 5 states. [2020-10-15 04:43:01,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:01,193 INFO L93 Difference]: Finished difference Result 6180 states and 9772 transitions. [2020-10-15 04:43:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:01,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:01,224 INFO L225 Difference]: With dead ends: 6180 [2020-10-15 04:43:01,224 INFO L226 Difference]: Without dead ends: 4116 [2020-10-15 04:43:01,235 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 04:43:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2020-10-15 04:43:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 4114. [2020-10-15 04:43:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2020-10-15 04:43:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 6465 transitions. [2020-10-15 04:43:01,467 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 6465 transitions. Word has length 187 [2020-10-15 04:43:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:01,468 INFO L479 AbstractCegarLoop]: Abstraction has 4114 states and 6465 transitions. [2020-10-15 04:43:01,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 6465 transitions. [2020-10-15 04:43:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:01,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:01,484 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:01,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:43:01,484 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:01,485 INFO L82 PathProgramCache]: Analyzing trace with hash -670252194, now seen corresponding path program 1 times [2020-10-15 04:43:01,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:01,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371855427] [2020-10-15 04:43:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:06,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:06,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:43:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:06,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 04:43:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:43:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:06,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:06,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:06,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:43:06,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371855427] [2020-10-15 04:43:06,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:06,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:06,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38747683] [2020-10-15 04:43:06,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:06,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:06,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:06,671 INFO L87 Difference]: Start difference. First operand 4114 states and 6465 transitions. Second operand 5 states. [2020-10-15 04:43:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:07,940 INFO L93 Difference]: Finished difference Result 6773 states and 10536 transitions. [2020-10-15 04:43:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:07,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:07,967 INFO L225 Difference]: With dead ends: 6773 [2020-10-15 04:43:07,967 INFO L226 Difference]: Without dead ends: 4986 [2020-10-15 04:43:07,973 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 04:43:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-15 04:43:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4144. [2020-10-15 04:43:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4144 states. [2020-10-15 04:43:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 6515 transitions. [2020-10-15 04:43:08,137 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 6515 transitions. Word has length 187 [2020-10-15 04:43:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:08,137 INFO L479 AbstractCegarLoop]: Abstraction has 4144 states and 6515 transitions. [2020-10-15 04:43:08,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 6515 transitions. [2020-10-15 04:43:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:08,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:08,148 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:08,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:43:08,149 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash 774701470, now seen corresponding path program 2 times [2020-10-15 04:43:08,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:08,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668138015] [2020-10-15 04:43:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:13,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:13,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:43:13,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:13,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:43:13,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:43:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-15 04:43:13,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668138015] [2020-10-15 04:43:13,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:13,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:13,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150211166] [2020-10-15 04:43:13,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:13,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:13,388 INFO L87 Difference]: Start difference. First operand 4144 states and 6515 transitions. Second operand 5 states. [2020-10-15 04:43:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:14,835 INFO L93 Difference]: Finished difference Result 6803 states and 10576 transitions. [2020-10-15 04:43:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:14,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:14,868 INFO L225 Difference]: With dead ends: 6803 [2020-10-15 04:43:14,868 INFO L226 Difference]: Without dead ends: 4986 [2020-10-15 04:43:14,874 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 04:43:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-15 04:43:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4334. [2020-10-15 04:43:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4334 states. [2020-10-15 04:43:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 6885 transitions. [2020-10-15 04:43:15,125 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 6885 transitions. Word has length 187 [2020-10-15 04:43:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:15,126 INFO L479 AbstractCegarLoop]: Abstraction has 4334 states and 6885 transitions. [2020-10-15 04:43:15,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 6885 transitions. [2020-10-15 04:43:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:15,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:15,156 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:15,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:43:15,157 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:15,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1778511320, now seen corresponding path program 3 times [2020-10-15 04:43:15,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:15,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636015559] [2020-10-15 04:43:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:20,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:20,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:20,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:43:20,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:20,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-15 04:43:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:43:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:20,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:20,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:20,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:20,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-15 04:43:20,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636015559] [2020-10-15 04:43:20,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:20,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:20,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342506636] [2020-10-15 04:43:20,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:20,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:20,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:20,363 INFO L87 Difference]: Start difference. First operand 4334 states and 6885 transitions. Second operand 5 states. [2020-10-15 04:43:21,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:21,562 INFO L93 Difference]: Finished difference Result 6993 states and 10936 transitions. [2020-10-15 04:43:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:21,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:21,588 INFO L225 Difference]: With dead ends: 6993 [2020-10-15 04:43:21,588 INFO L226 Difference]: Without dead ends: 4986 [2020-10-15 04:43:21,593 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 04:43:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-15 04:43:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4354. [2020-10-15 04:43:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2020-10-15 04:43:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6915 transitions. [2020-10-15 04:43:21,734 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6915 transitions. Word has length 187 [2020-10-15 04:43:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:21,734 INFO L479 AbstractCegarLoop]: Abstraction has 4354 states and 6915 transitions. [2020-10-15 04:43:21,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6915 transitions. [2020-10-15 04:43:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:21,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:21,746 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:21,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:43:21,747 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash -329605602, now seen corresponding path program 4 times [2020-10-15 04:43:21,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:21,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708041115] [2020-10-15 04:43:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:21,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:26,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:43:26,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:26,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-15 04:43:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:43:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:26,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:26,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:26,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-15 04:43:26,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708041115] [2020-10-15 04:43:26,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:26,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:26,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384233347] [2020-10-15 04:43:26,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:26,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:26,885 INFO L87 Difference]: Start difference. First operand 4354 states and 6915 transitions. Second operand 4 states. [2020-10-15 04:43:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:27,784 INFO L93 Difference]: Finished difference Result 7485 states and 11964 transitions. [2020-10-15 04:43:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:27,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-10-15 04:43:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:27,803 INFO L225 Difference]: With dead ends: 7485 [2020-10-15 04:43:27,803 INFO L226 Difference]: Without dead ends: 5017 [2020-10-15 04:43:27,811 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 04:43:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2020-10-15 04:43:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 5017. [2020-10-15 04:43:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5017 states. [2020-10-15 04:43:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 7969 transitions. [2020-10-15 04:43:28,016 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 7969 transitions. Word has length 187 [2020-10-15 04:43:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:28,017 INFO L479 AbstractCegarLoop]: Abstraction has 5017 states and 7969 transitions. [2020-10-15 04:43:28,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 7969 transitions. [2020-10-15 04:43:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-15 04:43:28,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:28,032 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:28,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:43:28,033 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:28,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1814253753, now seen corresponding path program 1 times [2020-10-15 04:43:28,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:28,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340179464] [2020-10-15 04:43:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-15 04:43:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:43:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:33,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-15 04:43:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:43:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:33,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:33,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:33,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:33,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:33,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:33,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-15 04:43:33,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340179464] [2020-10-15 04:43:33,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:33,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:33,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707365054] [2020-10-15 04:43:33,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:33,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:33,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:33,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:33,226 INFO L87 Difference]: Start difference. First operand 5017 states and 7969 transitions. Second operand 4 states. [2020-10-15 04:43:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:33,770 INFO L93 Difference]: Finished difference Result 8553 states and 13648 transitions. [2020-10-15 04:43:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:33,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2020-10-15 04:43:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:33,785 INFO L225 Difference]: With dead ends: 8553 [2020-10-15 04:43:33,785 INFO L226 Difference]: Without dead ends: 5422 [2020-10-15 04:43:33,792 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 04:43:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5422 states. [2020-10-15 04:43:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5422 to 5422. [2020-10-15 04:43:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-10-15 04:43:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 8607 transitions. [2020-10-15 04:43:33,924 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 8607 transitions. Word has length 226 [2020-10-15 04:43:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:33,924 INFO L479 AbstractCegarLoop]: Abstraction has 5422 states and 8607 transitions. [2020-10-15 04:43:33,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 8607 transitions. [2020-10-15 04:43:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-15 04:43:33,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:33,939 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:33,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:43:33,940 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash 904680677, now seen corresponding path program 1 times [2020-10-15 04:43:33,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:33,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807728765] [2020-10-15 04:43:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:43:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:43:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:39,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:39,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:39,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:39,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-15 04:43:39,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807728765] [2020-10-15 04:43:39,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:39,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:39,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598348186] [2020-10-15 04:43:39,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:39,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:39,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:39,189 INFO L87 Difference]: Start difference. First operand 5422 states and 8607 transitions. Second operand 5 states. [2020-10-15 04:43:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:40,285 INFO L93 Difference]: Finished difference Result 9121 states and 14224 transitions. [2020-10-15 04:43:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:40,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-15 04:43:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:40,302 INFO L225 Difference]: With dead ends: 9121 [2020-10-15 04:43:40,302 INFO L226 Difference]: Without dead ends: 6296 [2020-10-15 04:43:40,310 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 04:43:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2020-10-15 04:43:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 5422. [2020-10-15 04:43:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-10-15 04:43:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 8593 transitions. [2020-10-15 04:43:40,440 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 8593 transitions. Word has length 268 [2020-10-15 04:43:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:40,440 INFO L479 AbstractCegarLoop]: Abstraction has 5422 states and 8593 transitions. [2020-10-15 04:43:40,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 8593 transitions. [2020-10-15 04:43:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-15 04:43:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:40,456 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:40,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:43:40,456 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash 157802545, now seen corresponding path program 1 times [2020-10-15 04:43:40,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:40,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770494713] [2020-10-15 04:43:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-15 04:43:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 04:43:45,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:45,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-15 04:43:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:43:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:45,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-15 04:43:45,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770494713] [2020-10-15 04:43:45,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:45,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:45,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711416751] [2020-10-15 04:43:45,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:45,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:45,630 INFO L87 Difference]: Start difference. First operand 5422 states and 8593 transitions. Second operand 4 states. [2020-10-15 04:43:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:46,151 INFO L93 Difference]: Finished difference Result 8247 states and 13118 transitions. [2020-10-15 04:43:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:46,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2020-10-15 04:43:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:46,165 INFO L225 Difference]: With dead ends: 8247 [2020-10-15 04:43:46,166 INFO L226 Difference]: Without dead ends: 5827 [2020-10-15 04:43:46,172 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 04:43:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2020-10-15 04:43:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2020-10-15 04:43:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5827 states. [2020-10-15 04:43:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 9243 transitions. [2020-10-15 04:43:46,320 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 9243 transitions. Word has length 268 [2020-10-15 04:43:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:46,321 INFO L479 AbstractCegarLoop]: Abstraction has 5827 states and 9243 transitions. [2020-10-15 04:43:46,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 9243 transitions. [2020-10-15 04:43:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-15 04:43:46,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:46,335 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:46,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:43:46,336 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:46,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2039470704, now seen corresponding path program 1 times [2020-10-15 04:43:46,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:46,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092448044] [2020-10-15 04:43:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 276 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:43:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-15 04:43:51,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092448044] [2020-10-15 04:43:51,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:51,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:51,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085690374] [2020-10-15 04:43:51,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:51,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:51,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:51,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:51,579 INFO L87 Difference]: Start difference. First operand 5827 states and 9243 transitions. Second operand 4 states. [2020-10-15 04:43:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:52,408 INFO L93 Difference]: Finished difference Result 9047 states and 14402 transitions. [2020-10-15 04:43:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:52,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-15 04:43:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:52,424 INFO L225 Difference]: With dead ends: 9047 [2020-10-15 04:43:52,424 INFO L226 Difference]: Without dead ends: 6222 [2020-10-15 04:43:52,432 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 04:43:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2020-10-15 04:43:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6222. [2020-10-15 04:43:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-10-15 04:43:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 9867 transitions. [2020-10-15 04:43:52,587 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 9867 transitions. Word has length 312 [2020-10-15 04:43:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:52,588 INFO L479 AbstractCegarLoop]: Abstraction has 6222 states and 9867 transitions. [2020-10-15 04:43:52,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 9867 transitions. [2020-10-15 04:43:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-15 04:43:52,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:52,606 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:52,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:43:52,606 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash -938274235, now seen corresponding path program 1 times [2020-10-15 04:43:52,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:52,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677131643] [2020-10-15 04:43:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 04:43:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:57,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-15 04:43:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 280 proven. 597 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-15 04:43:59,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677131643] [2020-10-15 04:43:59,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:59,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:59,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181651680] [2020-10-15 04:43:59,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:59,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:59,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:59,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:59,255 INFO L87 Difference]: Start difference. First operand 6222 states and 9867 transitions. Second operand 11 states. [2020-10-15 04:44:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:01,865 INFO L93 Difference]: Finished difference Result 17283 states and 26941 transitions. [2020-10-15 04:44:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:44:01,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 352 [2020-10-15 04:44:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:01,903 INFO L225 Difference]: With dead ends: 17283 [2020-10-15 04:44:01,903 INFO L226 Difference]: Without dead ends: 13658 [2020-10-15 04:44:01,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:44:01,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2020-10-15 04:44:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 6304. [2020-10-15 04:44:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6304 states. [2020-10-15 04:44:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6304 states to 6304 states and 9985 transitions. [2020-10-15 04:44:02,151 INFO L78 Accepts]: Start accepts. Automaton has 6304 states and 9985 transitions. Word has length 352 [2020-10-15 04:44:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:02,152 INFO L479 AbstractCegarLoop]: Abstraction has 6304 states and 9985 transitions. [2020-10-15 04:44:02,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:44:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6304 states and 9985 transitions. [2020-10-15 04:44:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-15 04:44:02,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:02,173 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:02,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:44:02,173 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:02,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:02,173 INFO L82 PathProgramCache]: Analyzing trace with hash 121395191, now seen corresponding path program 1 times [2020-10-15 04:44:02,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:02,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569205637] [2020-10-15 04:44:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-15 04:44:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:44:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:07,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2020-10-15 04:44:07,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569205637] [2020-10-15 04:44:07,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:07,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:07,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104723506] [2020-10-15 04:44:07,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:07,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:07,413 INFO L87 Difference]: Start difference. First operand 6304 states and 9985 transitions. Second operand 5 states. [2020-10-15 04:44:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:08,597 INFO L93 Difference]: Finished difference Result 16183 states and 25412 transitions. [2020-10-15 04:44:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:08,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 353 [2020-10-15 04:44:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:08,616 INFO L225 Difference]: With dead ends: 16183 [2020-10-15 04:44:08,616 INFO L226 Difference]: Without dead ends: 9898 [2020-10-15 04:44:08,632 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 04:44:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2020-10-15 04:44:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 7790. [2020-10-15 04:44:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7790 states. [2020-10-15 04:44:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 12695 transitions. [2020-10-15 04:44:08,867 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 12695 transitions. Word has length 353 [2020-10-15 04:44:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:08,868 INFO L479 AbstractCegarLoop]: Abstraction has 7790 states and 12695 transitions. [2020-10-15 04:44:08,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 12695 transitions. [2020-10-15 04:44:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-15 04:44:08,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:08,886 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:08,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:44:08,886 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:08,887 INFO L82 PathProgramCache]: Analyzing trace with hash -568436299, now seen corresponding path program 1 times [2020-10-15 04:44:08,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:08,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117584122] [2020-10-15 04:44:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:09,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:44:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 04:44:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:44:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-15 04:44:14,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117584122] [2020-10-15 04:44:14,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:14,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:44:14,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092942064] [2020-10-15 04:44:14,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:44:14,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:44:14,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:14,166 INFO L87 Difference]: Start difference. First operand 7790 states and 12695 transitions. Second operand 6 states. [2020-10-15 04:44:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:15,658 INFO L93 Difference]: Finished difference Result 22287 states and 36376 transitions. [2020-10-15 04:44:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:44:15,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2020-10-15 04:44:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:15,695 INFO L225 Difference]: With dead ends: 22287 [2020-10-15 04:44:15,695 INFO L226 Difference]: Without dead ends: 14516 [2020-10-15 04:44:15,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:44:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14516 states. [2020-10-15 04:44:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14516 to 14280. [2020-10-15 04:44:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14280 states. [2020-10-15 04:44:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 23361 transitions. [2020-10-15 04:44:16,086 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 23361 transitions. Word has length 353 [2020-10-15 04:44:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:16,087 INFO L479 AbstractCegarLoop]: Abstraction has 14280 states and 23361 transitions. [2020-10-15 04:44:16,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:44:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 23361 transitions. [2020-10-15 04:44:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-15 04:44:16,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:16,109 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:16,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:44:16,109 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1289355721, now seen corresponding path program 1 times [2020-10-15 04:44:16,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:16,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528064380] [2020-10-15 04:44:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:16,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:21,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-15 04:44:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:44:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:21,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:21,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:21,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:44:21,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:21,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 671 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-15 04:44:21,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528064380] [2020-10-15 04:44:21,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:21,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:44:21,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119600891] [2020-10-15 04:44:21,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:44:21,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:44:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:21,429 INFO L87 Difference]: Start difference. First operand 14280 states and 23361 transitions. Second operand 6 states. [2020-10-15 04:44:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:22,936 INFO L93 Difference]: Finished difference Result 37237 states and 59323 transitions. [2020-10-15 04:44:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:44:22,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2020-10-15 04:44:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:22,978 INFO L225 Difference]: With dead ends: 37237 [2020-10-15 04:44:22,979 INFO L226 Difference]: Without dead ends: 22976 [2020-10-15 04:44:23,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:44:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22976 states. [2020-10-15 04:44:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22976 to 14973. [2020-10-15 04:44:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14973 states. [2020-10-15 04:44:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14973 states to 14973 states and 24558 transitions. [2020-10-15 04:44:23,444 INFO L78 Accepts]: Start accepts. Automaton has 14973 states and 24558 transitions. Word has length 353 [2020-10-15 04:44:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:23,445 INFO L479 AbstractCegarLoop]: Abstraction has 14973 states and 24558 transitions. [2020-10-15 04:44:23,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:44:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14973 states and 24558 transitions. [2020-10-15 04:44:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-15 04:44:23,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:23,463 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:23,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:44:23,463 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:23,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1332387773, now seen corresponding path program 1 times [2020-10-15 04:44:23,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:23,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847527942] [2020-10-15 04:44:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:28,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:44:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:44:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:28,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 673 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-15 04:44:28,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847527942] [2020-10-15 04:44:28,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:28,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:28,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194988436] [2020-10-15 04:44:28,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:28,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:28,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:28,655 INFO L87 Difference]: Start difference. First operand 14973 states and 24558 transitions. Second operand 5 states. [2020-10-15 04:44:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:29,796 INFO L93 Difference]: Finished difference Result 24287 states and 39527 transitions. [2020-10-15 04:44:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:29,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-10-15 04:44:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:29,820 INFO L225 Difference]: With dead ends: 24287 [2020-10-15 04:44:29,820 INFO L226 Difference]: Without dead ends: 15981 [2020-10-15 04:44:29,837 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 04:44:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2020-10-15 04:44:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 14973. [2020-10-15 04:44:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14973 states. [2020-10-15 04:44:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14973 states to 14973 states and 24540 transitions. [2020-10-15 04:44:30,173 INFO L78 Accepts]: Start accepts. Automaton has 14973 states and 24540 transitions. Word has length 354 [2020-10-15 04:44:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:30,173 INFO L479 AbstractCegarLoop]: Abstraction has 14973 states and 24540 transitions. [2020-10-15 04:44:30,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 14973 states and 24540 transitions. [2020-10-15 04:44:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-15 04:44:30,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:30,191 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:30,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:44:30,191 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:30,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1649290846, now seen corresponding path program 1 times [2020-10-15 04:44:30,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:30,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154218530] [2020-10-15 04:44:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-15 04:44:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:44:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-15 04:44:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:35,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 529 proven. 172 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-15 04:44:36,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154218530] [2020-10-15 04:44:36,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:36,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:44:36,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639095872] [2020-10-15 04:44:36,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:44:36,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:36,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:44:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:44:36,339 INFO L87 Difference]: Start difference. First operand 14973 states and 24540 transitions. Second operand 11 states. [2020-10-15 04:44:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:38,036 INFO L93 Difference]: Finished difference Result 30602 states and 50044 transitions. [2020-10-15 04:44:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:44:38,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 354 [2020-10-15 04:44:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:38,056 INFO L225 Difference]: With dead ends: 30602 [2020-10-15 04:44:38,056 INFO L226 Difference]: Without dead ends: 15648 [2020-10-15 04:44:38,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:44:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15648 states. [2020-10-15 04:44:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15648 to 15328. [2020-10-15 04:44:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15328 states. [2020-10-15 04:44:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15328 states to 15328 states and 25127 transitions. [2020-10-15 04:44:38,424 INFO L78 Accepts]: Start accepts. Automaton has 15328 states and 25127 transitions. Word has length 354 [2020-10-15 04:44:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:38,424 INFO L479 AbstractCegarLoop]: Abstraction has 15328 states and 25127 transitions. [2020-10-15 04:44:38,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:44:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 15328 states and 25127 transitions. [2020-10-15 04:44:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-15 04:44:38,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:38,444 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:38,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:44:38,444 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash 253897879, now seen corresponding path program 1 times [2020-10-15 04:44:38,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:38,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658460883] [2020-10-15 04:44:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-15 04:44:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:44:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-15 04:44:43,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658460883] [2020-10-15 04:44:43,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:43,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:43,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540497287] [2020-10-15 04:44:43,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:43,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:43,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:43,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:43,677 INFO L87 Difference]: Start difference. First operand 15328 states and 25127 transitions. Second operand 5 states. [2020-10-15 04:44:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:45,088 INFO L93 Difference]: Finished difference Result 34559 states and 55288 transitions. [2020-10-15 04:44:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:45,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-15 04:44:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:45,113 INFO L225 Difference]: With dead ends: 34559 [2020-10-15 04:44:45,113 INFO L226 Difference]: Without dead ends: 19272 [2020-10-15 04:44:45,127 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 04:44:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19272 states. [2020-10-15 04:44:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19272 to 15400. [2020-10-15 04:44:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15400 states. [2020-10-15 04:44:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15400 states to 15400 states and 25199 transitions. [2020-10-15 04:44:45,466 INFO L78 Accepts]: Start accepts. Automaton has 15400 states and 25199 transitions. Word has length 355 [2020-10-15 04:44:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:45,467 INFO L479 AbstractCegarLoop]: Abstraction has 15400 states and 25199 transitions. [2020-10-15 04:44:45,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 15400 states and 25199 transitions. [2020-10-15 04:44:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-15 04:44:45,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:45,480 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:44:45,481 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash 515651389, now seen corresponding path program 1 times [2020-10-15 04:44:45,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:45,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448546567] [2020-10-15 04:44:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:50,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-15 04:44:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:44:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:50,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-15 04:44:50,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448546567] [2020-10-15 04:44:50,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:50,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:44:50,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490058922] [2020-10-15 04:44:50,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:44:50,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:50,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:44:50,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:50,853 INFO L87 Difference]: Start difference. First operand 15400 states and 25199 transitions. Second operand 6 states. [2020-10-15 04:44:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:52,545 INFO L93 Difference]: Finished difference Result 38256 states and 61039 transitions. [2020-10-15 04:44:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:44:52,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 355 [2020-10-15 04:44:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:52,572 INFO L225 Difference]: With dead ends: 38256 [2020-10-15 04:44:52,573 INFO L226 Difference]: Without dead ends: 22897 [2020-10-15 04:44:52,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:44:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22897 states. [2020-10-15 04:44:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22897 to 15418. [2020-10-15 04:44:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15418 states. [2020-10-15 04:44:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15418 states to 15418 states and 25145 transitions. [2020-10-15 04:44:52,965 INFO L78 Accepts]: Start accepts. Automaton has 15418 states and 25145 transitions. Word has length 355 [2020-10-15 04:44:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:52,966 INFO L479 AbstractCegarLoop]: Abstraction has 15418 states and 25145 transitions. [2020-10-15 04:44:52,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:44:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 15418 states and 25145 transitions. [2020-10-15 04:44:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-15 04:44:52,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:52,983 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:52,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:44:52,983 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash 424490160, now seen corresponding path program 1 times [2020-10-15 04:44:52,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:52,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407947084] [2020-10-15 04:44:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:44:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-15 04:44:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:58,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:58,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 611 proven. 92 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2020-10-15 04:44:58,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407947084] [2020-10-15 04:44:58,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:58,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:44:58,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827447225] [2020-10-15 04:44:58,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:44:58,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:58,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:44:58,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:44:58,835 INFO L87 Difference]: Start difference. First operand 15418 states and 25145 transitions. Second operand 11 states. [2020-10-15 04:45:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:02,567 INFO L93 Difference]: Finished difference Result 36439 states and 59204 transitions. [2020-10-15 04:45:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:45:02,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 372 [2020-10-15 04:45:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:02,594 INFO L225 Difference]: With dead ends: 36439 [2020-10-15 04:45:02,594 INFO L226 Difference]: Without dead ends: 21062 [2020-10-15 04:45:02,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:45:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21062 states. [2020-10-15 04:45:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21062 to 18142. [2020-10-15 04:45:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18142 states. [2020-10-15 04:45:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 29641 transitions. [2020-10-15 04:45:03,042 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 29641 transitions. Word has length 372 [2020-10-15 04:45:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:03,042 INFO L479 AbstractCegarLoop]: Abstraction has 18142 states and 29641 transitions. [2020-10-15 04:45:03,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:45:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 29641 transitions. [2020-10-15 04:45:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-15 04:45:03,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:03,058 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:03,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:45:03,059 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1425271886, now seen corresponding path program 1 times [2020-10-15 04:45:03,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:03,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724870774] [2020-10-15 04:45:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-15 04:45:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:45:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-15 04:45:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:08,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-10-15 04:45:08,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724870774] [2020-10-15 04:45:08,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:08,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:08,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463158364] [2020-10-15 04:45:08,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:08,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:08,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:08,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:08,247 INFO L87 Difference]: Start difference. First operand 18142 states and 29641 transitions. Second operand 5 states. [2020-10-15 04:45:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:09,878 INFO L93 Difference]: Finished difference Result 44659 states and 72182 transitions. [2020-10-15 04:45:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:09,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-15 04:45:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:09,914 INFO L225 Difference]: With dead ends: 44659 [2020-10-15 04:45:09,914 INFO L226 Difference]: Without dead ends: 26558 [2020-10-15 04:45:09,931 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 04:45:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26558 states. [2020-10-15 04:45:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26558 to 21684. [2020-10-15 04:45:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21684 states. [2020-10-15 04:45:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21684 states to 21684 states and 36127 transitions. [2020-10-15 04:45:10,421 INFO L78 Accepts]: Start accepts. Automaton has 21684 states and 36127 transitions. Word has length 372 [2020-10-15 04:45:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:10,421 INFO L479 AbstractCegarLoop]: Abstraction has 21684 states and 36127 transitions. [2020-10-15 04:45:10,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 21684 states and 36127 transitions. [2020-10-15 04:45:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-15 04:45:10,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:10,442 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:10,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:45:10,442 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -468919862, now seen corresponding path program 1 times [2020-10-15 04:45:10,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:10,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369723480] [2020-10-15 04:45:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-15 04:45:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:45:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:15,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2020-10-15 04:45:15,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369723480] [2020-10-15 04:45:15,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:15,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:15,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744429422] [2020-10-15 04:45:15,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:15,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:15,797 INFO L87 Difference]: Start difference. First operand 21684 states and 36127 transitions. Second operand 5 states. [2020-10-15 04:45:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:17,434 INFO L93 Difference]: Finished difference Result 47627 states and 77907 transitions. [2020-10-15 04:45:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:17,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 374 [2020-10-15 04:45:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:17,467 INFO L225 Difference]: With dead ends: 47627 [2020-10-15 04:45:17,467 INFO L226 Difference]: Without dead ends: 25984 [2020-10-15 04:45:17,486 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 04:45:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25984 states. [2020-10-15 04:45:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25984 to 21037. [2020-10-15 04:45:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21037 states. [2020-10-15 04:45:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21037 states to 21037 states and 34904 transitions. [2020-10-15 04:45:17,969 INFO L78 Accepts]: Start accepts. Automaton has 21037 states and 34904 transitions. Word has length 374 [2020-10-15 04:45:17,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:17,969 INFO L479 AbstractCegarLoop]: Abstraction has 21037 states and 34904 transitions. [2020-10-15 04:45:17,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 21037 states and 34904 transitions. [2020-10-15 04:45:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-15 04:45:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:17,987 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:17,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:45:17,987 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash 392501450, now seen corresponding path program 1 times [2020-10-15 04:45:17,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:17,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695059330] [2020-10-15 04:45:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:45:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2020-10-15 04:45:23,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695059330] [2020-10-15 04:45:23,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:23,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:23,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867324344] [2020-10-15 04:45:23,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:23,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:23,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:23,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:23,202 INFO L87 Difference]: Start difference. First operand 21037 states and 34904 transitions. Second operand 5 states. [2020-10-15 04:45:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:25,117 INFO L93 Difference]: Finished difference Result 50535 states and 82794 transitions. [2020-10-15 04:45:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:25,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2020-10-15 04:45:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:25,149 INFO L225 Difference]: With dead ends: 50535 [2020-10-15 04:45:25,150 INFO L226 Difference]: Without dead ends: 29539 [2020-10-15 04:45:25,167 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 04:45:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29539 states. [2020-10-15 04:45:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29539 to 24665. [2020-10-15 04:45:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24665 states. [2020-10-15 04:45:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24665 states to 24665 states and 41476 transitions. [2020-10-15 04:45:25,710 INFO L78 Accepts]: Start accepts. Automaton has 24665 states and 41476 transitions. Word has length 382 [2020-10-15 04:45:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:25,711 INFO L479 AbstractCegarLoop]: Abstraction has 24665 states and 41476 transitions. [2020-10-15 04:45:25,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 24665 states and 41476 transitions. [2020-10-15 04:45:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-15 04:45:25,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:25,742 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:25,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:45:25,742 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:25,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:25,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2059441598, now seen corresponding path program 1 times [2020-10-15 04:45:25,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:25,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197125748] [2020-10-15 04:45:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-15 04:45:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:45:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:30,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-10-15 04:45:30,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197125748] [2020-10-15 04:45:30,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:30,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:30,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001329478] [2020-10-15 04:45:30,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:30,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:30,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:30,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:30,993 INFO L87 Difference]: Start difference. First operand 24665 states and 41476 transitions. Second operand 5 states. [2020-10-15 04:45:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:32,924 INFO L93 Difference]: Finished difference Result 57705 states and 95852 transitions. [2020-10-15 04:45:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:32,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2020-10-15 04:45:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:32,964 INFO L225 Difference]: With dead ends: 57705 [2020-10-15 04:45:32,964 INFO L226 Difference]: Without dead ends: 33081 [2020-10-15 04:45:32,988 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 04:45:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33081 states. [2020-10-15 04:45:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33081 to 24579. [2020-10-15 04:45:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24579 states. [2020-10-15 04:45:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24579 states to 24579 states and 41390 transitions. [2020-10-15 04:45:33,792 INFO L78 Accepts]: Start accepts. Automaton has 24579 states and 41390 transitions. Word has length 383 [2020-10-15 04:45:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:33,792 INFO L479 AbstractCegarLoop]: Abstraction has 24579 states and 41390 transitions. [2020-10-15 04:45:33,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24579 states and 41390 transitions. [2020-10-15 04:45:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-15 04:45:33,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:33,815 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:33,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:45:33,816 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:33,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1558938690, now seen corresponding path program 1 times [2020-10-15 04:45:33,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:33,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975104951] [2020-10-15 04:45:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-15 04:45:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:45:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-15 04:45:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:38,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:38,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 840 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2020-10-15 04:45:39,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975104951] [2020-10-15 04:45:39,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:39,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:39,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095299582] [2020-10-15 04:45:39,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:39,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:39,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:39,034 INFO L87 Difference]: Start difference. First operand 24579 states and 41390 transitions. Second operand 5 states. [2020-10-15 04:45:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:40,883 INFO L93 Difference]: Finished difference Result 57533 states and 95680 transitions. [2020-10-15 04:45:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:40,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2020-10-15 04:45:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:40,922 INFO L225 Difference]: With dead ends: 57533 [2020-10-15 04:45:40,922 INFO L226 Difference]: Without dead ends: 32995 [2020-10-15 04:45:40,945 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 04:45:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32995 states. [2020-10-15 04:45:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32995 to 24579. [2020-10-15 04:45:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24579 states. [2020-10-15 04:45:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24579 states to 24579 states and 41390 transitions. [2020-10-15 04:45:41,551 INFO L78 Accepts]: Start accepts. Automaton has 24579 states and 41390 transitions. Word has length 383 [2020-10-15 04:45:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:41,551 INFO L479 AbstractCegarLoop]: Abstraction has 24579 states and 41390 transitions. [2020-10-15 04:45:41,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 24579 states and 41390 transitions. [2020-10-15 04:45:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-15 04:45:41,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:41,574 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:41,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:45:41,575 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash -277137706, now seen corresponding path program 1 times [2020-10-15 04:45:41,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:41,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850258122] [2020-10-15 04:45:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-15 04:45:46,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:46,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:45:46,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:46,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:45:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-15 04:45:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:46,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:46,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:46,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 680 proven. 158 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-15 04:45:47,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850258122] [2020-10-15 04:45:47,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:47,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:45:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027428755] [2020-10-15 04:45:47,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:45:47,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:47,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:45:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:45:47,449 INFO L87 Difference]: Start difference. First operand 24579 states and 41390 transitions. Second operand 11 states. [2020-10-15 04:45:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:51,808 INFO L93 Difference]: Finished difference Result 60891 states and 102202 transitions. [2020-10-15 04:45:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 04:45:51,809 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 385 [2020-10-15 04:45:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:51,859 INFO L225 Difference]: With dead ends: 60891 [2020-10-15 04:45:51,859 INFO L226 Difference]: Without dead ends: 40609 [2020-10-15 04:45:51,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-15 04:45:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40609 states. [2020-10-15 04:45:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40609 to 40189. [2020-10-15 04:45:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40189 states. [2020-10-15 04:45:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40189 states to 40189 states and 67636 transitions. [2020-10-15 04:45:52,892 INFO L78 Accepts]: Start accepts. Automaton has 40189 states and 67636 transitions. Word has length 385 [2020-10-15 04:45:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:52,893 INFO L479 AbstractCegarLoop]: Abstraction has 40189 states and 67636 transitions. [2020-10-15 04:45:52,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:45:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 40189 states and 67636 transitions. [2020-10-15 04:45:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-15 04:45:52,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:52,934 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:52,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:45:52,934 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:52,934 INFO L82 PathProgramCache]: Analyzing trace with hash 703613076, now seen corresponding path program 2 times [2020-10-15 04:45:52,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:52,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425352559] [2020-10-15 04:45:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:56,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:45:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:58,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:58,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-15 04:45:58,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425352559] [2020-10-15 04:45:58,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:58,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:58,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801488591] [2020-10-15 04:45:58,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:58,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:58,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:58,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:58,190 INFO L87 Difference]: Start difference. First operand 40189 states and 67636 transitions. Second operand 5 states. [2020-10-15 04:46:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:00,633 INFO L93 Difference]: Finished difference Result 93449 states and 155511 transitions. [2020-10-15 04:46:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:00,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 385 [2020-10-15 04:46:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:00,697 INFO L225 Difference]: With dead ends: 93449 [2020-10-15 04:46:00,697 INFO L226 Difference]: Without dead ends: 53301 [2020-10-15 04:46:00,731 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 04:46:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53301 states. [2020-10-15 04:46:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53301 to 40317. [2020-10-15 04:46:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40317 states. [2020-10-15 04:46:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40317 states to 40317 states and 67764 transitions. [2020-10-15 04:46:02,097 INFO L78 Accepts]: Start accepts. Automaton has 40317 states and 67764 transitions. Word has length 385 [2020-10-15 04:46:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:02,097 INFO L479 AbstractCegarLoop]: Abstraction has 40317 states and 67764 transitions. [2020-10-15 04:46:02,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 40317 states and 67764 transitions. [2020-10-15 04:46:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-15 04:46:02,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:02,134 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:02,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:46:02,135 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:02,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1366274428, now seen corresponding path program 1 times [2020-10-15 04:46:02,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:02,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623237209] [2020-10-15 04:46:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-15 04:46:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:46:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:07,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:07,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 842 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-15 04:46:07,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623237209] [2020-10-15 04:46:07,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:07,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:07,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909965977] [2020-10-15 04:46:07,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:07,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:07,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:07,366 INFO L87 Difference]: Start difference. First operand 40317 states and 67764 transitions. Second operand 5 states.