/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.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:37:03,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:37:03,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:37:03,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:37:03,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:37:03,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:37:03,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:37:03,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:37:03,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:37:03,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:37:03,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:37:03,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:37:03,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:37:03,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:37:03,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:37:03,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:37:03,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:37:03,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:37:03,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:37:03,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:37:03,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:37:03,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:37:03,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:37:03,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:37:03,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:37:03,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:37:03,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:37:03,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:37:03,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:37:03,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:37:03,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:37:03,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:37:03,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:37:03,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:37:03,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:37:03,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:37:03,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:37:03,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:37:03,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:37:03,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:37:03,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:37:03,103 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 04:37:03,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:37:03,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:37:03,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:37:03,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:37:03,129 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:37:03,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:37:03,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:37:03,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:37:03,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:37:03,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:37:03,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:37:03,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:37:03,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:37:03,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:37:03,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:37:03,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:37:03,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:37:03,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:37:03,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:37:03,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:37:03,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:37:03,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:37:03,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:37:03,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:37:03,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:37:03,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:37:03,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:37:03,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:37:03,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:37:03,134 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 04:37:03,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:37:03,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:37:03,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:37:03,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:37:03,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:37:03,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-15 04:37:03,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03cd6e41/52d370974f564047bc10ae0396121598/FLAG6299862a9 [2020-10-15 04:37:04,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:37:04,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-15 04:37:04,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03cd6e41/52d370974f564047bc10ae0396121598/FLAG6299862a9 [2020-10-15 04:37:04,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03cd6e41/52d370974f564047bc10ae0396121598 [2020-10-15 04:37:04,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:37:04,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:37:04,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:37:04,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:37:04,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:37:04,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:37:04" (1/1) ... [2020-10-15 04:37:04,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310d9079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:04, skipping insertion in model container [2020-10-15 04:37:04,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:37:04" (1/1) ... [2020-10-15 04:37:04,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:37:04,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:37:05,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:37:05,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:37:05,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:37:05,560 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:37:05,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05 WrapperNode [2020-10-15 04:37:05,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:37:05,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:37:05,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:37:05,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:37:05,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (1/1) ... [2020-10-15 04:37:05,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:37:05,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:37:05,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:37:05,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:37:05,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (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 04:37:05,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:37:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:37:05,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:37:05,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:37:05,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:37:05,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:37:05,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:37:05,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:37:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:37:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:37:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:37:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:37:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:37:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:37:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:37:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:37:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:37:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:37:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:37:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:37:06,297 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:37:07,006 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:37:07,006 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:37:07,029 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:37:07,029 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:37:07,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:37:07 BoogieIcfgContainer [2020-10-15 04:37:07,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:37:07,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:37:07,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:37:07,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:37:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:37:04" (1/3) ... [2020-10-15 04:37:07,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb0fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:37:07, skipping insertion in model container [2020-10-15 04:37:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:05" (2/3) ... [2020-10-15 04:37:07,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb0fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:37:07, skipping insertion in model container [2020-10-15 04:37:07,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:37:07" (3/3) ... [2020-10-15 04:37:07,042 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2020-10-15 04:37:07,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:37:07,061 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:37:07,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:37:07,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:37:07,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:37:07,104 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:37:07,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:37:07,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:37:07,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:37:07,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:37:07,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:37:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-15 04:37:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 04:37:07,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:07,139 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, 1, 1] [2020-10-15 04:37:07,140 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1486764871, now seen corresponding path program 1 times [2020-10-15 04:37:07,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:07,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869214121] [2020-10-15 04:37:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 04:37:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-15 04:37:08,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:08,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:37:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 04:37:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:37:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:08,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:08,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:37:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:08,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:08,654 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 04:37:08,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869214121] [2020-10-15 04:37:08,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:08,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:08,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561036422] [2020-10-15 04:37:08,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:08,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:08,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:08,685 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2020-10-15 04:37:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:09,395 INFO L93 Difference]: Finished difference Result 427 states and 714 transitions. [2020-10-15 04:37:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:09,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-15 04:37:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:09,414 INFO L225 Difference]: With dead ends: 427 [2020-10-15 04:37:09,414 INFO L226 Difference]: Without dead ends: 260 [2020-10-15 04:37:09,419 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 04:37:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-15 04:37:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2020-10-15 04:37:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-15 04:37:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 389 transitions. [2020-10-15 04:37:09,494 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 389 transitions. Word has length 52 [2020-10-15 04:37:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:09,495 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 389 transitions. [2020-10-15 04:37:09,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 389 transitions. [2020-10-15 04:37:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:37:09,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:09,500 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, 1, 1] [2020-10-15 04:37:09,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:37:09,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash 415305612, now seen corresponding path program 1 times [2020-10-15 04:37:09,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:09,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523698374] [2020-10-15 04:37:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:37:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-15 04:37:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:10,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:37:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:37:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:10,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:10,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:10,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:37:10,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:10,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:10,533 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 04:37:10,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523698374] [2020-10-15 04:37:10,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:10,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:10,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555946566] [2020-10-15 04:37:10,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:10,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:10,538 INFO L87 Difference]: Start difference. First operand 260 states and 389 transitions. Second operand 4 states. [2020-10-15 04:37:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:11,002 INFO L93 Difference]: Finished difference Result 506 states and 766 transitions. [2020-10-15 04:37:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:11,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-15 04:37:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:11,007 INFO L225 Difference]: With dead ends: 506 [2020-10-15 04:37:11,007 INFO L226 Difference]: Without dead ends: 382 [2020-10-15 04:37:11,009 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 04:37:11,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-15 04:37:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-10-15 04:37:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-15 04:37:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 573 transitions. [2020-10-15 04:37:11,039 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 573 transitions. Word has length 69 [2020-10-15 04:37:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:11,040 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 573 transitions. [2020-10-15 04:37:11,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 573 transitions. [2020-10-15 04:37:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:37:11,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:11,046 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, 1, 1] [2020-10-15 04:37:11,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:37:11,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash 448059851, now seen corresponding path program 1 times [2020-10-15 04:37:11,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:11,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614666731] [2020-10-15 04:37:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:11,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 04:37:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-15 04:37:11,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:11,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:37:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 04:37:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:12,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:12,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:37:12,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:12,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:12,081 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 04:37:12,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614666731] [2020-10-15 04:37:12,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:12,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:12,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541326332] [2020-10-15 04:37:12,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:12,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:12,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:12,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:12,085 INFO L87 Difference]: Start difference. First operand 382 states and 573 transitions. Second operand 4 states. [2020-10-15 04:37:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:12,569 INFO L93 Difference]: Finished difference Result 750 states and 1134 transitions. [2020-10-15 04:37:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:12,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-15 04:37:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:12,573 INFO L225 Difference]: With dead ends: 750 [2020-10-15 04:37:12,574 INFO L226 Difference]: Without dead ends: 504 [2020-10-15 04:37:12,575 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 04:37:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-15 04:37:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-15 04:37:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-15 04:37:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 758 transitions. [2020-10-15 04:37:12,595 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 758 transitions. Word has length 91 [2020-10-15 04:37:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:12,596 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 758 transitions. [2020-10-15 04:37:12,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 758 transitions. [2020-10-15 04:37:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:37:12,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:12,601 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:37:12,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:37:12,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:12,603 INFO L82 PathProgramCache]: Analyzing trace with hash 199604808, now seen corresponding path program 1 times [2020-10-15 04:37:12,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:12,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259263773] [2020-10-15 04:37:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:12,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:37:12,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-15 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-15 04:37:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 04:37:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 33 [2020-10-15 04:37:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:13,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:13,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:37:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:13,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:37:13,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259263773] [2020-10-15 04:37:13,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:13,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:13,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970294479] [2020-10-15 04:37:13,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:13,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:13,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:13,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:13,114 INFO L87 Difference]: Start difference. First operand 504 states and 758 transitions. Second operand 4 states. [2020-10-15 04:37:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:13,562 INFO L93 Difference]: Finished difference Result 994 states and 1504 transitions. [2020-10-15 04:37:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:13,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-15 04:37:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:13,568 INFO L225 Difference]: With dead ends: 994 [2020-10-15 04:37:13,569 INFO L226 Difference]: Without dead ends: 626 [2020-10-15 04:37:13,570 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 04:37:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-15 04:37:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2020-10-15 04:37:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-15 04:37:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 944 transitions. [2020-10-15 04:37:13,597 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 944 transitions. Word has length 132 [2020-10-15 04:37:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:13,598 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 944 transitions. [2020-10-15 04:37:13,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 944 transitions. [2020-10-15 04:37:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 04:37:13,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:13,609 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] [2020-10-15 04:37:13,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:37:13,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:13,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:13,610 INFO L82 PathProgramCache]: Analyzing trace with hash 130034942, now seen corresponding path program 1 times [2020-10-15 04:37:13,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:13,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471615151] [2020-10-15 04:37:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:18,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:18,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:37:18,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:18,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:37:18,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:18,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:37:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:37:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 04:37:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:19,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:19,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:19,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 98 proven. 90 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:37:19,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471615151] [2020-10-15 04:37:19,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:37:19,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:37:19,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755463447] [2020-10-15 04:37:19,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:37:19,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:37:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:37:19,267 INFO L87 Difference]: Start difference. First operand 626 states and 944 transitions. Second operand 11 states. [2020-10-15 04:37:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:22,462 INFO L93 Difference]: Finished difference Result 2474 states and 3748 transitions. [2020-10-15 04:37:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:37:22,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-15 04:37:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:22,474 INFO L225 Difference]: With dead ends: 2474 [2020-10-15 04:37:22,475 INFO L226 Difference]: Without dead ends: 1862 [2020-10-15 04:37:22,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:37:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2020-10-15 04:37:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1599. [2020-10-15 04:37:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-10-15 04:37:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2461 transitions. [2020-10-15 04:37:22,542 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2461 transitions. Word has length 171 [2020-10-15 04:37:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:22,543 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 2461 transitions. [2020-10-15 04:37:22,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:37:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2461 transitions. [2020-10-15 04:37:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 04:37:22,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:22,553 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] [2020-10-15 04:37:22,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:37:22,553 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2115544512, now seen corresponding path program 1 times [2020-10-15 04:37:22,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:22,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774001120] [2020-10-15 04:37:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:37:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:37:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-10-15 04:37:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:24,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-15 04:37:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 04:37:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:25,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:25,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-15 04:37:25,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774001120] [2020-10-15 04:37:25,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:25,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:25,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125848472] [2020-10-15 04:37:25,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:25,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:25,038 INFO L87 Difference]: Start difference. First operand 1599 states and 2461 transitions. Second operand 4 states. [2020-10-15 04:37:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:25,520 INFO L93 Difference]: Finished difference Result 1829 states and 2817 transitions. [2020-10-15 04:37:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:25,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-15 04:37:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:25,533 INFO L225 Difference]: With dead ends: 1829 [2020-10-15 04:37:25,534 INFO L226 Difference]: Without dead ends: 1827 [2020-10-15 04:37:25,535 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 04:37:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-10-15 04:37:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1827. [2020-10-15 04:37:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-10-15 04:37:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2814 transitions. [2020-10-15 04:37:25,668 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2814 transitions. Word has length 171 [2020-10-15 04:37:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:25,669 INFO L479 AbstractCegarLoop]: Abstraction has 1827 states and 2814 transitions. [2020-10-15 04:37:25,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2814 transitions. [2020-10-15 04:37:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-15 04:37:25,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:25,676 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:25,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:37:25,676 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1486297484, now seen corresponding path program 1 times [2020-10-15 04:37:25,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:25,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578063058] [2020-10-15 04:37:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 04:37:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:37:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:37:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:30,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:37:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:37:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-15 04:37:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:31,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:31,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:31,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:31,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:37:31,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:31,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 149 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:31,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578063058] [2020-10-15 04:37:31,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:37:31,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 04:37:31,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284149769] [2020-10-15 04:37:31,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:37:31,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:31,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:37:31,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:37:31,680 INFO L87 Difference]: Start difference. First operand 1827 states and 2814 transitions. Second operand 13 states. [2020-10-15 04:37:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:36,617 INFO L93 Difference]: Finished difference Result 4091 states and 6225 transitions. [2020-10-15 04:37:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 04:37:36,618 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-15 04:37:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:36,632 INFO L225 Difference]: With dead ends: 4091 [2020-10-15 04:37:36,632 INFO L226 Difference]: Without dead ends: 2721 [2020-10-15 04:37:36,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:37:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2020-10-15 04:37:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2336. [2020-10-15 04:37:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2020-10-15 04:37:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3604 transitions. [2020-10-15 04:37:36,736 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3604 transitions. Word has length 214 [2020-10-15 04:37:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:36,736 INFO L479 AbstractCegarLoop]: Abstraction has 2336 states and 3604 transitions. [2020-10-15 04:37:36,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 04:37:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3604 transitions. [2020-10-15 04:37:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-15 04:37:36,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:36,746 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:36,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:37:36,747 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:36,748 INFO L82 PathProgramCache]: Analyzing trace with hash -759281970, now seen corresponding path program 1 times [2020-10-15 04:37:36,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:36,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7348177] [2020-10-15 04:37:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:41,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-15 04:37:41,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:37:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 04:37:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:37:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-15 04:37:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:42,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:42,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:42,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:42,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 29 proven. 263 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 04:37:42,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7348177] [2020-10-15 04:37:42,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:37:42,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:37:42,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980889123] [2020-10-15 04:37:42,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:37:42,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:42,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:37:42,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:37:42,493 INFO L87 Difference]: Start difference. First operand 2336 states and 3604 transitions. Second operand 11 states. [2020-10-15 04:37:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:45,447 INFO L93 Difference]: Finished difference Result 8051 states and 12470 transitions. [2020-10-15 04:37:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:37:45,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 214 [2020-10-15 04:37:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:45,492 INFO L225 Difference]: With dead ends: 8051 [2020-10-15 04:37:45,493 INFO L226 Difference]: Without dead ends: 6363 [2020-10-15 04:37:45,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 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 04:37:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6363 states. [2020-10-15 04:37:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6363 to 4903. [2020-10-15 04:37:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4903 states. [2020-10-15 04:37:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 7830 transitions. [2020-10-15 04:37:45,723 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 7830 transitions. Word has length 214 [2020-10-15 04:37:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:45,723 INFO L479 AbstractCegarLoop]: Abstraction has 4903 states and 7830 transitions. [2020-10-15 04:37:45,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:37:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 7830 transitions. [2020-10-15 04:37:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-15 04:37:45,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:45,742 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:45,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:37:45,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash 477899100, now seen corresponding path program 1 times [2020-10-15 04:37:45,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:45,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379505489] [2020-10-15 04:37:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-15 04:37:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:37:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:50,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-15 04:37:50,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379505489] [2020-10-15 04:37:50,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:50,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:50,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305166941] [2020-10-15 04:37:50,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:50,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:50,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:50,985 INFO L87 Difference]: Start difference. First operand 4903 states and 7830 transitions. Second operand 5 states. [2020-10-15 04:37:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:52,012 INFO L93 Difference]: Finished difference Result 12550 states and 19943 transitions. [2020-10-15 04:37:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:52,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-15 04:37:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:52,055 INFO L225 Difference]: With dead ends: 12550 [2020-10-15 04:37:52,055 INFO L226 Difference]: Without dead ends: 8295 [2020-10-15 04:37:52,067 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 04:37:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8295 states. [2020-10-15 04:37:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8295 to 6575. [2020-10-15 04:37:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6575 states. [2020-10-15 04:37:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 10931 transitions. [2020-10-15 04:37:52,291 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 10931 transitions. Word has length 228 [2020-10-15 04:37:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:52,292 INFO L479 AbstractCegarLoop]: Abstraction has 6575 states and 10931 transitions. [2020-10-15 04:37:52,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 10931 transitions. [2020-10-15 04:37:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-15 04:37:52,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:52,315 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, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:52,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:37:52,315 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -185093728, now seen corresponding path program 1 times [2020-10-15 04:37:52,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:52,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764717869] [2020-10-15 04:37:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:57,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:57,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-15 04:37:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:37:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:37:57,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:57,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-15 04:37:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:37:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:57,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:57,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-15 04:37:57,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764717869] [2020-10-15 04:37:57,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:57,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:57,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90192078] [2020-10-15 04:37:57,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:57,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:57,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:57,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:57,540 INFO L87 Difference]: Start difference. First operand 6575 states and 10931 transitions. Second operand 5 states. [2020-10-15 04:37:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:58,794 INFO L93 Difference]: Finished difference Result 12006 states and 19777 transitions. [2020-10-15 04:37:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:58,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-15 04:37:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:58,835 INFO L225 Difference]: With dead ends: 12006 [2020-10-15 04:37:58,835 INFO L226 Difference]: Without dead ends: 8095 [2020-10-15 04:37:58,846 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 04:37:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2020-10-15 04:37:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 7199. [2020-10-15 04:37:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7199 states. [2020-10-15 04:37:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 12083 transitions. [2020-10-15 04:37:59,042 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 12083 transitions. Word has length 229 [2020-10-15 04:37:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:59,043 INFO L479 AbstractCegarLoop]: Abstraction has 7199 states and 12083 transitions. [2020-10-15 04:37:59,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 12083 transitions. [2020-10-15 04:37:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-15 04:37:59,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:59,063 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, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:59,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:37:59,063 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash -587154946, now seen corresponding path program 2 times [2020-10-15 04:37:59,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:59,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884887860] [2020-10-15 04:37:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:04,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-15 04:38:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:38:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:38:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:04,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 04:38:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:04,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-15 04:38:04,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884887860] [2020-10-15 04:38:04,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:04,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:04,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574800470] [2020-10-15 04:38:04,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:04,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:04,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:04,321 INFO L87 Difference]: Start difference. First operand 7199 states and 12083 transitions. Second operand 5 states. [2020-10-15 04:38:05,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:05,161 INFO L93 Difference]: Finished difference Result 21450 states and 35974 transitions. [2020-10-15 04:38:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:05,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-15 04:38:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:05,204 INFO L225 Difference]: With dead ends: 21450 [2020-10-15 04:38:05,204 INFO L226 Difference]: Without dead ends: 14265 [2020-10-15 04:38:05,218 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 04:38:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14265 states. [2020-10-15 04:38:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 14263. [2020-10-15 04:38:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14263 states. [2020-10-15 04:38:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 23777 transitions. [2020-10-15 04:38:05,624 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 23777 transitions. Word has length 229 [2020-10-15 04:38:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:05,625 INFO L479 AbstractCegarLoop]: Abstraction has 14263 states and 23777 transitions. [2020-10-15 04:38:05,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 23777 transitions. [2020-10-15 04:38:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-15 04:38:05,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:05,699 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, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:05,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:38:05,700 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash -42282372, now seen corresponding path program 1 times [2020-10-15 04:38:05,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:05,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823569369] [2020-10-15 04:38:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:10,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-15 04:38:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 04:38:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:10,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-15 04:38:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:10,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:10,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:10,910 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-15 04:38:10,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823569369] [2020-10-15 04:38:10,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:10,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:10,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076874745] [2020-10-15 04:38:10,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:10,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:10,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:10,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:10,912 INFO L87 Difference]: Start difference. First operand 14263 states and 23777 transitions. Second operand 5 states. [2020-10-15 04:38:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:12,054 INFO L93 Difference]: Finished difference Result 18305 states and 30317 transitions. [2020-10-15 04:38:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:12,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-15 04:38:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:12,095 INFO L225 Difference]: With dead ends: 18305 [2020-10-15 04:38:12,095 INFO L226 Difference]: Without dead ends: 15483 [2020-10-15 04:38:12,106 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 04:38:12,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15483 states. [2020-10-15 04:38:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15483 to 14263. [2020-10-15 04:38:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14263 states. [2020-10-15 04:38:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 23777 transitions. [2020-10-15 04:38:12,542 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 23777 transitions. Word has length 229 [2020-10-15 04:38:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:12,543 INFO L479 AbstractCegarLoop]: Abstraction has 14263 states and 23777 transitions. [2020-10-15 04:38:12,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 23777 transitions. [2020-10-15 04:38:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:38:12,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:12,579 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, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:12,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:38:12,579 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1787676782, now seen corresponding path program 1 times [2020-10-15 04:38:12,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:12,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959346323] [2020-10-15 04:38:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-15 04:38:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:38:17,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:17,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:17,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:17,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-15 04:38:17,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959346323] [2020-10-15 04:38:17,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:17,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:17,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567714580] [2020-10-15 04:38:17,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:17,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:17,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:17,719 INFO L87 Difference]: Start difference. First operand 14263 states and 23777 transitions. Second operand 5 states. [2020-10-15 04:38:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:18,905 INFO L93 Difference]: Finished difference Result 24598 states and 40454 transitions. [2020-10-15 04:38:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:18,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:38:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:18,940 INFO L225 Difference]: With dead ends: 24598 [2020-10-15 04:38:18,940 INFO L226 Difference]: Without dead ends: 16379 [2020-10-15 04:38:18,955 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 04:38:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16379 states. [2020-10-15 04:38:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16379 to 14757. [2020-10-15 04:38:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14757 states. [2020-10-15 04:38:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 24655 transitions. [2020-10-15 04:38:19,338 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 24655 transitions. Word has length 230 [2020-10-15 04:38:19,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:19,339 INFO L479 AbstractCegarLoop]: Abstraction has 14757 states and 24655 transitions. [2020-10-15 04:38:19,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 24655 transitions. [2020-10-15 04:38:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:38:19,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:19,361 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, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:19,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:38:19,362 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1650696144, now seen corresponding path program 2 times [2020-10-15 04:38:19,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:19,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743639261] [2020-10-15 04:38:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:24,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:24,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-15 04:38:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 04:38:24,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:24,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-15 04:38:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:24,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-15 04:38:24,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743639261] [2020-10-15 04:38:24,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:24,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:24,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694532791] [2020-10-15 04:38:24,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:24,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:24,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:24,531 INFO L87 Difference]: Start difference. First operand 14757 states and 24655 transitions. Second operand 5 states. [2020-10-15 04:38:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:25,668 INFO L93 Difference]: Finished difference Result 18763 states and 31129 transitions. [2020-10-15 04:38:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:25,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:38:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:25,703 INFO L225 Difference]: With dead ends: 18763 [2020-10-15 04:38:25,703 INFO L226 Difference]: Without dead ends: 15467 [2020-10-15 04:38:25,713 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 04:38:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2020-10-15 04:38:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14295. [2020-10-15 04:38:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14295 states. [2020-10-15 04:38:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14295 states to 14295 states and 23809 transitions. [2020-10-15 04:38:26,126 INFO L78 Accepts]: Start accepts. Automaton has 14295 states and 23809 transitions. Word has length 230 [2020-10-15 04:38:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:26,126 INFO L479 AbstractCegarLoop]: Abstraction has 14295 states and 23809 transitions. [2020-10-15 04:38:26,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 14295 states and 23809 transitions. [2020-10-15 04:38:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:38:26,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:26,147 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, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:26,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:38:26,147 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -263415193, now seen corresponding path program 1 times [2020-10-15 04:38:26,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:26,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274576954] [2020-10-15 04:38:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:31,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-15 04:38:31,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:31,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:31,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-15 04:38:31,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274576954] [2020-10-15 04:38:31,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:31,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:31,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489315685] [2020-10-15 04:38:31,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:31,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:31,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:31,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:31,313 INFO L87 Difference]: Start difference. First operand 14295 states and 23809 transitions. Second operand 5 states. [2020-10-15 04:38:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:32,329 INFO L93 Difference]: Finished difference Result 34703 states and 56629 transitions. [2020-10-15 04:38:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:32,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:38:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:32,362 INFO L225 Difference]: With dead ends: 34703 [2020-10-15 04:38:32,363 INFO L226 Difference]: Without dead ends: 20587 [2020-10-15 04:38:32,387 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 04:38:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20587 states. [2020-10-15 04:38:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20587 to 14831. [2020-10-15 04:38:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14831 states. [2020-10-15 04:38:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 24709 transitions. [2020-10-15 04:38:32,735 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 24709 transitions. Word has length 230 [2020-10-15 04:38:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:32,736 INFO L479 AbstractCegarLoop]: Abstraction has 14831 states and 24709 transitions. [2020-10-15 04:38:32,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 24709 transitions. [2020-10-15 04:38:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-15 04:38:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:32,752 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, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:32,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:38:32,752 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash -909454011, now seen corresponding path program 1 times [2020-10-15 04:38:32,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:32,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748856346] [2020-10-15 04:38:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:37,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 04:38:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:38:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:38:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:38,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:38:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 192 proven. 88 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-15 04:38:38,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748856346] [2020-10-15 04:38:38,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:38:38,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:38:38,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748572722] [2020-10-15 04:38:38,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:38:38,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:38,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:38:38,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:38:38,406 INFO L87 Difference]: Start difference. First operand 14831 states and 24709 transitions. Second operand 10 states. [2020-10-15 04:38:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:40,984 INFO L93 Difference]: Finished difference Result 36123 states and 59824 transitions. [2020-10-15 04:38:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:38:40,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-10-15 04:38:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:41,007 INFO L225 Difference]: With dead ends: 36123 [2020-10-15 04:38:41,008 INFO L226 Difference]: Without dead ends: 21333 [2020-10-15 04:38:41,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:38:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2020-10-15 04:38:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 19993. [2020-10-15 04:38:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19993 states. [2020-10-15 04:38:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19993 states to 19993 states and 33380 transitions. [2020-10-15 04:38:41,451 INFO L78 Accepts]: Start accepts. Automaton has 19993 states and 33380 transitions. Word has length 231 [2020-10-15 04:38:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:41,451 INFO L479 AbstractCegarLoop]: Abstraction has 19993 states and 33380 transitions. [2020-10-15 04:38:41,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:38:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19993 states and 33380 transitions. [2020-10-15 04:38:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-15 04:38:41,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:41,477 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:41,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:38:41,477 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:41,478 INFO L82 PathProgramCache]: Analyzing trace with hash -43194208, now seen corresponding path program 1 times [2020-10-15 04:38:41,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:41,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586010327] [2020-10-15 04:38:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:46,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:38:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:46,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-15 04:38:46,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586010327] [2020-10-15 04:38:46,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:46,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:46,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422559360] [2020-10-15 04:38:46,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:46,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:46,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:46,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:46,614 INFO L87 Difference]: Start difference. First operand 19993 states and 33380 transitions. Second operand 5 states. [2020-10-15 04:38:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:48,051 INFO L93 Difference]: Finished difference Result 43909 states and 71614 transitions. [2020-10-15 04:38:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:48,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-15 04:38:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:48,092 INFO L225 Difference]: With dead ends: 43909 [2020-10-15 04:38:48,093 INFO L226 Difference]: Without dead ends: 24117 [2020-10-15 04:38:48,127 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 04:38:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24117 states. [2020-10-15 04:38:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24117 to 19993. [2020-10-15 04:38:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19993 states. [2020-10-15 04:38:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19993 states to 19993 states and 33268 transitions. [2020-10-15 04:38:48,570 INFO L78 Accepts]: Start accepts. Automaton has 19993 states and 33268 transitions. Word has length 244 [2020-10-15 04:38:48,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:48,570 INFO L479 AbstractCegarLoop]: Abstraction has 19993 states and 33268 transitions. [2020-10-15 04:38:48,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 19993 states and 33268 transitions. [2020-10-15 04:38:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-15 04:38:48,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:48,595 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:48,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:38:48,595 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1940096261, now seen corresponding path program 1 times [2020-10-15 04:38:48,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:48,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506353088] [2020-10-15 04:38:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:53,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:53,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-15 04:38:53,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:38:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:38:53,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:53,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:38:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:53,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:53,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:53,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-15 04:38:53,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506353088] [2020-10-15 04:38:53,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:53,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258959015] [2020-10-15 04:38:53,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:53,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:53,851 INFO L87 Difference]: Start difference. First operand 19993 states and 33268 transitions. Second operand 5 states. [2020-10-15 04:38:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:55,641 INFO L93 Difference]: Finished difference Result 49852 states and 81987 transitions. [2020-10-15 04:38:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:55,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-15 04:38:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:55,677 INFO L225 Difference]: With dead ends: 49852 [2020-10-15 04:38:55,677 INFO L226 Difference]: Without dead ends: 30060 [2020-10-15 04:38:55,698 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 04:38:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30060 states. [2020-10-15 04:38:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30060 to 23972. [2020-10-15 04:38:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23972 states. [2020-10-15 04:38:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23972 states to 23972 states and 40615 transitions. [2020-10-15 04:38:56,196 INFO L78 Accepts]: Start accepts. Automaton has 23972 states and 40615 transitions. Word has length 244 [2020-10-15 04:38:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:56,196 INFO L479 AbstractCegarLoop]: Abstraction has 23972 states and 40615 transitions. [2020-10-15 04:38:56,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 23972 states and 40615 transitions. [2020-10-15 04:38:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-15 04:38:56,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:56,219 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:56,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:38:56,219 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1431664863, now seen corresponding path program 1 times [2020-10-15 04:38:56,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:56,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987641313] [2020-10-15 04:38:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:01,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-15 04:39:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:01,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:01,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:01,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-15 04:39:01,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987641313] [2020-10-15 04:39:01,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:01,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:01,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534905670] [2020-10-15 04:39:01,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:01,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:01,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:01,342 INFO L87 Difference]: Start difference. First operand 23972 states and 40615 transitions. Second operand 5 states. [2020-10-15 04:39:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:02,922 INFO L93 Difference]: Finished difference Result 56484 states and 94619 transitions. [2020-10-15 04:39:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:02,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-15 04:39:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:02,965 INFO L225 Difference]: With dead ends: 56484 [2020-10-15 04:39:02,965 INFO L226 Difference]: Without dead ends: 32780 [2020-10-15 04:39:02,989 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 04:39:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32780 states. [2020-10-15 04:39:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32780 to 26359. [2020-10-15 04:39:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:03,550 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 246 [2020-10-15 04:39:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:03,550 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:03,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 04:39:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:03,578 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:03,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:39:03,579 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1838118235, now seen corresponding path program 1 times [2020-10-15 04:39:03,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:03,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905278354] [2020-10-15 04:39:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:39:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:08,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:08,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:08,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:08,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:39:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-15 04:39:08,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905278354] [2020-10-15 04:39:08,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:08,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:08,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028289644] [2020-10-15 04:39:08,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:08,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:08,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:08,804 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:10,573 INFO L93 Difference]: Finished difference Result 61231 states and 103256 transitions. [2020-10-15 04:39:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:10,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-15 04:39:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:10,620 INFO L225 Difference]: With dead ends: 61231 [2020-10-15 04:39:10,620 INFO L226 Difference]: Without dead ends: 35140 [2020-10-15 04:39:10,647 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 04:39:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35140 states. [2020-10-15 04:39:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35140 to 26455. [2020-10-15 04:39:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26455 states. [2020-10-15 04:39:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26455 states to 26455 states and 45082 transitions. [2020-10-15 04:39:11,427 INFO L78 Accepts]: Start accepts. Automaton has 26455 states and 45082 transitions. Word has length 251 [2020-10-15 04:39:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:11,428 INFO L479 AbstractCegarLoop]: Abstraction has 26455 states and 45082 transitions. [2020-10-15 04:39:11,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 26455 states and 45082 transitions. [2020-10-15 04:39:11,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 04:39:11,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:11,455 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:11,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:39:11,455 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1408459929, now seen corresponding path program 1 times [2020-10-15 04:39:11,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:11,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917989912] [2020-10-15 04:39:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:12,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:16,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 04:39:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:39:16,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:16,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:39:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-15 04:39:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:39:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:16,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-15 04:39:16,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917989912] [2020-10-15 04:39:16,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:16,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:16,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447563290] [2020-10-15 04:39:16,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:16,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:16,613 INFO L87 Difference]: Start difference. First operand 26455 states and 45082 transitions. Second operand 5 states. [2020-10-15 04:39:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:18,264 INFO L93 Difference]: Finished difference Result 60037 states and 101190 transitions. [2020-10-15 04:39:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:18,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-15 04:39:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:18,306 INFO L225 Difference]: With dead ends: 60037 [2020-10-15 04:39:18,306 INFO L226 Difference]: Without dead ends: 34614 [2020-10-15 04:39:18,327 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 04:39:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34614 states. [2020-10-15 04:39:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34614 to 26359. [2020-10-15 04:39:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:18,913 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 251 [2020-10-15 04:39:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:18,913 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:18,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 04:39:18,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:18,936 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:18,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:39:18,936 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash -312064503, now seen corresponding path program 1 times [2020-10-15 04:39:18,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:18,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778201870] [2020-10-15 04:39:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:23,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-15 04:39:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:24,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-15 04:39:24,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778201870] [2020-10-15 04:39:24,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:24,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:24,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240889598] [2020-10-15 04:39:24,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:24,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:24,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:24,085 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:25,839 INFO L93 Difference]: Finished difference Result 61258 states and 103361 transitions. [2020-10-15 04:39:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:25,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-15 04:39:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:25,882 INFO L225 Difference]: With dead ends: 61258 [2020-10-15 04:39:25,882 INFO L226 Difference]: Without dead ends: 35167 [2020-10-15 04:39:25,903 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 04:39:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35167 states. [2020-10-15 04:39:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35167 to 26359. [2020-10-15 04:39:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:26,524 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 251 [2020-10-15 04:39:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:26,524 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:26,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-15 04:39:26,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:26,549 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:26,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:39:26,549 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:26,550 INFO L82 PathProgramCache]: Analyzing trace with hash 5315929, now seen corresponding path program 1 times [2020-10-15 04:39:26,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:26,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704535895] [2020-10-15 04:39:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:31,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-15 04:39:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:31,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-15 04:39:31,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704535895] [2020-10-15 04:39:31,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:31,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:31,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364957861] [2020-10-15 04:39:31,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:31,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:31,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:31,706 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:33,186 INFO L93 Difference]: Finished difference Result 37071 states and 62690 transitions. [2020-10-15 04:39:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:33,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-15 04:39:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:33,229 INFO L225 Difference]: With dead ends: 37071 [2020-10-15 04:39:33,230 INFO L226 Difference]: Without dead ends: 29076 [2020-10-15 04:39:33,241 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 04:39:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29076 states. [2020-10-15 04:39:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29076 to 26359. [2020-10-15 04:39:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:33,845 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 254 [2020-10-15 04:39:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:33,846 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:33,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 04:39:33,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:33,871 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:33,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:39:33,871 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:33,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:33,871 INFO L82 PathProgramCache]: Analyzing trace with hash -418516876, now seen corresponding path program 1 times [2020-10-15 04:39:33,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:33,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097837772] [2020-10-15 04:39:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:38,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-15 04:39:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-15 04:39:39,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097837772] [2020-10-15 04:39:39,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:39,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:39,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129858160] [2020-10-15 04:39:39,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:39,013 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:40,574 INFO L93 Difference]: Finished difference Result 47361 states and 79834 transitions. [2020-10-15 04:39:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:40,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-15 04:39:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:40,617 INFO L225 Difference]: With dead ends: 47361 [2020-10-15 04:39:40,617 INFO L226 Difference]: Without dead ends: 31641 [2020-10-15 04:39:40,633 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 04:39:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31641 states. [2020-10-15 04:39:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31641 to 26359. [2020-10-15 04:39:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:41,249 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 257 [2020-10-15 04:39:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:41,249 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:41,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-15 04:39:41,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:41,274 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:41,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:39:41,275 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:41,275 INFO L82 PathProgramCache]: Analyzing trace with hash -398118314, now seen corresponding path program 1 times [2020-10-15 04:39:41,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:41,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971801001] [2020-10-15 04:39:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:46,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-15 04:39:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-15 04:39:46,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971801001] [2020-10-15 04:39:46,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:46,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:46,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474444743] [2020-10-15 04:39:46,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:46,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:46,428 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:47,928 INFO L93 Difference]: Finished difference Result 33791 states and 56974 transitions. [2020-10-15 04:39:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:47,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-15 04:39:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:47,968 INFO L225 Difference]: With dead ends: 33791 [2020-10-15 04:39:47,968 INFO L226 Difference]: Without dead ends: 30483 [2020-10-15 04:39:47,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:39:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2020-10-15 04:39:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 26359. [2020-10-15 04:39:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26359 states. [2020-10-15 04:39:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26359 states to 26359 states and 44986 transitions. [2020-10-15 04:39:48,602 INFO L78 Accepts]: Start accepts. Automaton has 26359 states and 44986 transitions. Word has length 259 [2020-10-15 04:39:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:48,603 INFO L479 AbstractCegarLoop]: Abstraction has 26359 states and 44986 transitions. [2020-10-15 04:39:48,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 26359 states and 44986 transitions. [2020-10-15 04:39:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-15 04:39:48,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:48,629 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:48,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:39:48,629 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:48,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1423154622, now seen corresponding path program 1 times [2020-10-15 04:39:48,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:48,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664531812] [2020-10-15 04:39:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:53,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:53,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-15 04:39:53,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:39:53,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-15 04:39:53,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664531812] [2020-10-15 04:39:53,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:53,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:53,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890798186] [2020-10-15 04:39:53,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:53,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:53,798 INFO L87 Difference]: Start difference. First operand 26359 states and 44986 transitions. Second operand 5 states. [2020-10-15 04:39:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:55,545 INFO L93 Difference]: Finished difference Result 50860 states and 85276 transitions. [2020-10-15 04:39:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:55,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-15 04:39:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:55,588 INFO L225 Difference]: With dead ends: 50860 [2020-10-15 04:39:55,588 INFO L226 Difference]: Without dead ends: 35140 [2020-10-15 04:39:55,606 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 04:39:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35140 states. [2020-10-15 04:39:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35140 to 26399. [2020-10-15 04:39:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26399 states. [2020-10-15 04:39:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26399 states to 26399 states and 45026 transitions. [2020-10-15 04:39:56,468 INFO L78 Accepts]: Start accepts. Automaton has 26399 states and 45026 transitions. Word has length 259 [2020-10-15 04:39:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:56,468 INFO L479 AbstractCegarLoop]: Abstraction has 26399 states and 45026 transitions. [2020-10-15 04:39:56,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 26399 states and 45026 transitions. [2020-10-15 04:39:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-15 04:39:56,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:56,503 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:56,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:39:56,503 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:56,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1457675478, now seen corresponding path program 1 times [2020-10-15 04:39:56,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:56,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871563715] [2020-10-15 04:39:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:01,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-15 04:40:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:40:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:40:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-15 04:40:01,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871563715] [2020-10-15 04:40:01,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:01,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:01,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618844725] [2020-10-15 04:40:01,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:01,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:01,640 INFO L87 Difference]: Start difference. First operand 26399 states and 45026 transitions. Second operand 5 states. [2020-10-15 04:40:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:03,122 INFO L93 Difference]: Finished difference Result 31654 states and 53532 transitions. [2020-10-15 04:40:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:03,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-15 04:40:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:03,159 INFO L225 Difference]: With dead ends: 31654 [2020-10-15 04:40:03,159 INFO L226 Difference]: Without dead ends: 28346 [2020-10-15 04:40:03,168 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 04:40:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28346 states. [2020-10-15 04:40:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28346 to 26399. [2020-10-15 04:40:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26399 states. [2020-10-15 04:40:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26399 states to 26399 states and 45026 transitions. [2020-10-15 04:40:03,815 INFO L78 Accepts]: Start accepts. Automaton has 26399 states and 45026 transitions. Word has length 259 [2020-10-15 04:40:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:03,815 INFO L479 AbstractCegarLoop]: Abstraction has 26399 states and 45026 transitions. [2020-10-15 04:40:03,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 26399 states and 45026 transitions. [2020-10-15 04:40:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-15 04:40:03,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:03,841 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:03,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:40:03,841 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2055369002, now seen corresponding path program 1 times [2020-10-15 04:40:03,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:03,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465467398] [2020-10-15 04:40:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:08,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:40:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-15 04:40:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:40:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:09,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:09,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:09,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:09,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-15 04:40:09,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465467398] [2020-10-15 04:40:09,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:09,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:09,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207290116] [2020-10-15 04:40:09,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:09,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:09,111 INFO L87 Difference]: Start difference. First operand 26399 states and 45026 transitions. Second operand 5 states. [2020-10-15 04:40:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:10,911 INFO L93 Difference]: Finished difference Result 50648 states and 84987 transitions. [2020-10-15 04:40:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:10,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-15 04:40:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:10,958 INFO L225 Difference]: With dead ends: 50648 [2020-10-15 04:40:10,958 INFO L226 Difference]: Without dead ends: 34778 [2020-10-15 04:40:10,975 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 04:40:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34778 states. [2020-10-15 04:40:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34778 to 30748. [2020-10-15 04:40:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30748 states. [2020-10-15 04:40:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30748 states to 30748 states and 52937 transitions. [2020-10-15 04:40:11,686 INFO L78 Accepts]: Start accepts. Automaton has 30748 states and 52937 transitions. Word has length 260 [2020-10-15 04:40:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:11,687 INFO L479 AbstractCegarLoop]: Abstraction has 30748 states and 52937 transitions. [2020-10-15 04:40:11,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 30748 states and 52937 transitions. [2020-10-15 04:40:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-15 04:40:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:11,715 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:11,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:40:11,715 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:11,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1060675304, now seen corresponding path program 1 times [2020-10-15 04:40:11,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:11,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847246588] [2020-10-15 04:40:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:40:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:16,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:16,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-15 04:40:16,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847246588] [2020-10-15 04:40:16,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:16,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:16,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751827693] [2020-10-15 04:40:16,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:16,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:16,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:16,880 INFO L87 Difference]: Start difference. First operand 30748 states and 52937 transitions. Second operand 5 states. [2020-10-15 04:40:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:18,792 INFO L93 Difference]: Finished difference Result 53657 states and 90518 transitions. [2020-10-15 04:40:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:18,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-15 04:40:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:18,833 INFO L225 Difference]: With dead ends: 53657 [2020-10-15 04:40:18,833 INFO L226 Difference]: Without dead ends: 35435 [2020-10-15 04:40:18,849 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 04:40:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35435 states. [2020-10-15 04:40:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35435 to 26992. [2020-10-15 04:40:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26992 states. [2020-10-15 04:40:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26992 states to 26992 states and 46187 transitions. [2020-10-15 04:40:19,589 INFO L78 Accepts]: Start accepts. Automaton has 26992 states and 46187 transitions. Word has length 260 [2020-10-15 04:40:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:19,589 INFO L479 AbstractCegarLoop]: Abstraction has 26992 states and 46187 transitions. [2020-10-15 04:40:19,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 26992 states and 46187 transitions. [2020-10-15 04:40:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-15 04:40:19,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:19,615 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:19,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:40:19,615 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:19,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1169451758, now seen corresponding path program 2 times [2020-10-15 04:40:19,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:19,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108156043] [2020-10-15 04:40:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:24,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-15 04:40:24,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:40:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-15 04:40:24,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108156043] [2020-10-15 04:40:24,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:24,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:24,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437943023] [2020-10-15 04:40:24,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:24,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:24,749 INFO L87 Difference]: Start difference. First operand 26992 states and 46187 transitions. Second operand 5 states. [2020-10-15 04:40:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:26,289 INFO L93 Difference]: Finished difference Result 31770 states and 53847 transitions. [2020-10-15 04:40:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:26,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-15 04:40:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:26,324 INFO L225 Difference]: With dead ends: 31770 [2020-10-15 04:40:26,324 INFO L226 Difference]: Without dead ends: 27940 [2020-10-15 04:40:26,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:40:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27940 states. [2020-10-15 04:40:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27940 to 26067. [2020-10-15 04:40:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26067 states. [2020-10-15 04:40:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26067 states to 26067 states and 44514 transitions. [2020-10-15 04:40:27,132 INFO L78 Accepts]: Start accepts. Automaton has 26067 states and 44514 transitions. Word has length 260 [2020-10-15 04:40:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:27,133 INFO L479 AbstractCegarLoop]: Abstraction has 26067 states and 44514 transitions. [2020-10-15 04:40:27,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 26067 states and 44514 transitions. [2020-10-15 04:40:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-15 04:40:27,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:27,158 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:27,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:40:27,158 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1691469881, now seen corresponding path program 1 times [2020-10-15 04:40:27,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:27,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262336462] [2020-10-15 04:40:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:32,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 04:40:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:40:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:32,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 04:40:32,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262336462] [2020-10-15 04:40:32,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:32,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:32,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395722521] [2020-10-15 04:40:32,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:32,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:32,311 INFO L87 Difference]: Start difference. First operand 26067 states and 44514 transitions. Second operand 5 states. [2020-10-15 04:40:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:34,016 INFO L93 Difference]: Finished difference Result 48106 states and 81573 transitions. [2020-10-15 04:40:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:34,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-15 04:40:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:34,055 INFO L225 Difference]: With dead ends: 48106 [2020-10-15 04:40:34,055 INFO L226 Difference]: Without dead ends: 30052 [2020-10-15 04:40:34,072 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 04:40:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30052 states. [2020-10-15 04:40:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30052 to 27642. [2020-10-15 04:40:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27642 states. [2020-10-15 04:40:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27642 states to 27642 states and 47339 transitions. [2020-10-15 04:40:34,776 INFO L78 Accepts]: Start accepts. Automaton has 27642 states and 47339 transitions. Word has length 273 [2020-10-15 04:40:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:34,777 INFO L479 AbstractCegarLoop]: Abstraction has 27642 states and 47339 transitions. [2020-10-15 04:40:34,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27642 states and 47339 transitions. [2020-10-15 04:40:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-15 04:40:34,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:34,812 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:34,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:40:34,812 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -241388203, now seen corresponding path program 1 times [2020-10-15 04:40:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:34,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086848087] [2020-10-15 04:40:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-15 04:40:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:40,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 305 proven. 224 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-15 04:40:40,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086848087] [2020-10-15 04:40:40,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:40,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:40:40,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228659090] [2020-10-15 04:40:40,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:40:40,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:40,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:40:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:40:40,417 INFO L87 Difference]: Start difference. First operand 27642 states and 47339 transitions. Second operand 12 states. [2020-10-15 04:40:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:46,437 INFO L93 Difference]: Finished difference Result 60184 states and 101318 transitions. [2020-10-15 04:40:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:40:46,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 273 [2020-10-15 04:40:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:46,495 INFO L225 Difference]: With dead ends: 60184 [2020-10-15 04:40:46,496 INFO L226 Difference]: Without dead ends: 44032 [2020-10-15 04:40:46,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-15 04:40:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44032 states.