/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.06.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:37:26,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:37:26,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:37:27,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:37:27,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:37:27,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:37:27,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:37:27,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:37:27,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:37:27,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:37:27,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:37:27,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:37:27,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:37:27,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:37:27,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:37:27,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:37:27,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:37:27,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:37:27,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:37:27,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:37:27,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:37:27,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:37:27,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:37:27,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:37:27,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:37:27,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:37:27,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:37:27,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:37:27,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:37:27,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:37:27,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:37:27,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:37:27,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:37:27,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:37:27,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:37:27,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:37:27,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:37:27,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:37:27,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:37:27,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:37:27,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:37:27,101 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 04:37:27,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:37:27,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:37:27,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:37:27,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:37:27,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:37:27,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:37:27,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:37:27,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:37:27,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:37:27,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:37:27,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:37:27,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:37:27,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:37:27,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:37:27,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:37:27,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:37:27,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:37:27,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:37:27,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:37:27,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:37:27,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:37:27,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:37:27,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:37:27,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:37:27,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:37:27,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:37:27,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:37:27,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:37:27,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:37:27,158 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 04:37:27,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:37:27,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:37:27,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:37:27,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:37:27,476 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:37:27,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.06.i.cil-1.c [2020-10-15 04:37:27,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0013997f1/196b19e0162c40be93a5811d5414e964/FLAGdcecb5a1f [2020-10-15 04:37:28,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:37:28,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.06.i.cil-1.c [2020-10-15 04:37:28,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0013997f1/196b19e0162c40be93a5811d5414e964/FLAGdcecb5a1f [2020-10-15 04:37:28,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0013997f1/196b19e0162c40be93a5811d5414e964 [2020-10-15 04:37:28,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:37:28,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:37:28,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:37:28,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:37:28,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:37:28,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:37:28" (1/1) ... [2020-10-15 04:37:28,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3837a877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:28, skipping insertion in model container [2020-10-15 04:37:28,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:37:28" (1/1) ... [2020-10-15 04:37:28,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:37:28,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:37:29,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:37:29,080 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:37:29,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:37:29,244 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:37:29,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29 WrapperNode [2020-10-15 04:37:29,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:37:29,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:37:29,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:37:29,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:37:29,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (1/1) ... [2020-10-15 04:37:29,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:37:29,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:37:29,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:37:29,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:37:29,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (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 04:37:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:37:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:37:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:37:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:37:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:37:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:37:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:37:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:37:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:37:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:37:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:37:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:37:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:37:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:37:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:37:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:37:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:37:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:37:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:37:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:37:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:37:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:37:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:37:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:37:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:37:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:37:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:37:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:37:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:37:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:37:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:37:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:37:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:37:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:37:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:37:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:37:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:37:30,154 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:37:31,061 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:37:31,062 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:37:31,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:37:31,086 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:37:31,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:37:31 BoogieIcfgContainer [2020-10-15 04:37:31,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:37:31,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:37:31,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:37:31,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:37:31,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:37:28" (1/3) ... [2020-10-15 04:37:31,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777bfff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:37:31, skipping insertion in model container [2020-10-15 04:37:31,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:37:29" (2/3) ... [2020-10-15 04:37:31,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777bfff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:37:31, skipping insertion in model container [2020-10-15 04:37:31,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:37:31" (3/3) ... [2020-10-15 04:37:31,099 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-1.c [2020-10-15 04:37:31,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:37:31,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:37:31,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:37:31,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:37:31,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:37:31,161 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:37:31,161 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:37:31,161 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:37:31,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:37:31,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:37:31,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:37:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-15 04:37:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 04:37:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:31,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:31,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash -603940065, now seen corresponding path program 1 times [2020-10-15 04:37:31,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:31,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546361964] [2020-10-15 04:37:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 04:37:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:37:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-15 04:37:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:37:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:37:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:37:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:37:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:32,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:32,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:37:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:32,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:32,696 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 04:37:32,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546361964] [2020-10-15 04:37:32,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:32,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:32,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359783718] [2020-10-15 04:37:32,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:32,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:32,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:32,726 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 5 states. [2020-10-15 04:37:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:34,065 INFO L93 Difference]: Finished difference Result 437 states and 746 transitions. [2020-10-15 04:37:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:34,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-15 04:37:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:34,084 INFO L225 Difference]: With dead ends: 437 [2020-10-15 04:37:34,084 INFO L226 Difference]: Without dead ends: 257 [2020-10-15 04:37:34,089 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 04:37:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-15 04:37:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 183. [2020-10-15 04:37:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-15 04:37:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 294 transitions. [2020-10-15 04:37:34,153 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 294 transitions. Word has length 50 [2020-10-15 04:37:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:34,153 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 294 transitions. [2020-10-15 04:37:34,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 294 transitions. [2020-10-15 04:37:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 04:37:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:34,159 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] [2020-10-15 04:37:34,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:37:34,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -512917115, now seen corresponding path program 1 times [2020-10-15 04:37:34,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:34,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795698104] [2020-10-15 04:37:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 04:37:34,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:37:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-15 04:37:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:34,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:37:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:37:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:37:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:34,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:34,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:34,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:34,788 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 04:37:34,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795698104] [2020-10-15 04:37:34,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:34,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:34,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948122039] [2020-10-15 04:37:34,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:34,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:34,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:34,793 INFO L87 Difference]: Start difference. First operand 183 states and 294 transitions. Second operand 5 states. [2020-10-15 04:37:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:35,979 INFO L93 Difference]: Finished difference Result 386 states and 605 transitions. [2020-10-15 04:37:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:35,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-15 04:37:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:35,983 INFO L225 Difference]: With dead ends: 386 [2020-10-15 04:37:35,983 INFO L226 Difference]: Without dead ends: 248 [2020-10-15 04:37:35,986 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 04:37:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-15 04:37:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 184. [2020-10-15 04:37:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-15 04:37:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 295 transitions. [2020-10-15 04:37:36,003 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 295 transitions. Word has length 51 [2020-10-15 04:37:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:36,004 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 295 transitions. [2020-10-15 04:37:36,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 295 transitions. [2020-10-15 04:37:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:37:36,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:36,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:36,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:37:36,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1878512674, now seen corresponding path program 1 times [2020-10-15 04:37:36,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:36,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387257693] [2020-10-15 04:37:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:37,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:37:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-15 04:37:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:37,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:37:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:37:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:37,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:37,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:37:37,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:37,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:37,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387257693] [2020-10-15 04:37:37,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:37,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:37,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653571274] [2020-10-15 04:37:37,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:37,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:37,334 INFO L87 Difference]: Start difference. First operand 184 states and 295 transitions. Second operand 5 states. [2020-10-15 04:37:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:38,617 INFO L93 Difference]: Finished difference Result 435 states and 692 transitions. [2020-10-15 04:37:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:38,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:37:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:38,621 INFO L225 Difference]: With dead ends: 435 [2020-10-15 04:37:38,621 INFO L226 Difference]: Without dead ends: 297 [2020-10-15 04:37:38,622 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 04:37:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-15 04:37:38,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 223. [2020-10-15 04:37:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-15 04:37:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 367 transitions. [2020-10-15 04:37:38,646 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 367 transitions. Word has length 63 [2020-10-15 04:37:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:38,648 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 367 transitions. [2020-10-15 04:37:38,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 367 transitions. [2020-10-15 04:37:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 04:37:38,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:38,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:38,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:37:38,658 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash -287602074, now seen corresponding path program 1 times [2020-10-15 04:37:38,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:38,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463030006] [2020-10-15 04:37:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:37:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4804 [2020-10-15 04:37:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:37:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:37:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:43,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:43,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:37:43,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:43,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:43,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:43,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463030006] [2020-10-15 04:37:43,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:43,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:43,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120037274] [2020-10-15 04:37:43,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:43,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:43,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:43,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:43,595 INFO L87 Difference]: Start difference. First operand 223 states and 367 transitions. Second operand 5 states. [2020-10-15 04:37:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:44,834 INFO L93 Difference]: Finished difference Result 513 states and 836 transitions. [2020-10-15 04:37:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:44,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 04:37:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:44,837 INFO L225 Difference]: With dead ends: 513 [2020-10-15 04:37:44,837 INFO L226 Difference]: Without dead ends: 336 [2020-10-15 04:37:44,838 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 04:37:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-15 04:37:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 223. [2020-10-15 04:37:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-15 04:37:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 367 transitions. [2020-10-15 04:37:44,851 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 367 transitions. Word has length 64 [2020-10-15 04:37:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:44,851 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 367 transitions. [2020-10-15 04:37:44,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 367 transitions. [2020-10-15 04:37:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 04:37:44,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:44,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:44,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:37:44,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1369962330, now seen corresponding path program 1 times [2020-10-15 04:37:44,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:44,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066526291] [2020-10-15 04:37:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:45,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:45,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:37:45,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:37:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:37:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:45,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066526291] [2020-10-15 04:37:45,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:45,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:45,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631584572] [2020-10-15 04:37:45,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:45,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:45,845 INFO L87 Difference]: Start difference. First operand 223 states and 367 transitions. Second operand 5 states. [2020-10-15 04:37:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:47,003 INFO L93 Difference]: Finished difference Result 504 states and 822 transitions. [2020-10-15 04:37:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:47,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 04:37:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:47,010 INFO L225 Difference]: With dead ends: 504 [2020-10-15 04:37:47,010 INFO L226 Difference]: Without dead ends: 327 [2020-10-15 04:37:47,012 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 04:37:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-15 04:37:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 231. [2020-10-15 04:37:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 04:37:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 380 transitions. [2020-10-15 04:37:47,028 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 380 transitions. Word has length 64 [2020-10-15 04:37:47,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:47,030 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 380 transitions. [2020-10-15 04:37:47,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 380 transitions. [2020-10-15 04:37:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 04:37:47,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:47,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:47,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:37:47,035 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:47,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1551576484, now seen corresponding path program 1 times [2020-10-15 04:37:47,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:47,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107809533] [2020-10-15 04:37:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:37:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:37:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-15 04:37:47,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:47,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:37:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:37:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:47,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:47,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:47,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:47,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:47,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107809533] [2020-10-15 04:37:47,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:47,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:47,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072413443] [2020-10-15 04:37:47,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:47,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:47,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:47,516 INFO L87 Difference]: Start difference. First operand 231 states and 380 transitions. Second operand 5 states. [2020-10-15 04:37:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:48,799 INFO L93 Difference]: Finished difference Result 562 states and 923 transitions. [2020-10-15 04:37:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:48,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 04:37:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:48,803 INFO L225 Difference]: With dead ends: 562 [2020-10-15 04:37:48,804 INFO L226 Difference]: Without dead ends: 345 [2020-10-15 04:37:48,805 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 04:37:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-15 04:37:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 232. [2020-10-15 04:37:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 04:37:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 381 transitions. [2020-10-15 04:37:48,822 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 381 transitions. Word has length 64 [2020-10-15 04:37:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:48,823 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 381 transitions. [2020-10-15 04:37:48,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 381 transitions. [2020-10-15 04:37:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:37:48,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:48,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:48,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:37:48,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash 703626014, now seen corresponding path program 1 times [2020-10-15 04:37:48,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:48,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016372598] [2020-10-15 04:37:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:50,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:52,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:37:52,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3874 [2020-10-15 04:37:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:52,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:37:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:37:52,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:52,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:52,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:52,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016372598] [2020-10-15 04:37:52,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:52,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:52,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256199559] [2020-10-15 04:37:52,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:52,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:52,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:52,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:52,857 INFO L87 Difference]: Start difference. First operand 232 states and 381 transitions. Second operand 5 states. [2020-10-15 04:37:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:54,100 INFO L93 Difference]: Finished difference Result 554 states and 910 transitions. [2020-10-15 04:37:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:54,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-15 04:37:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:54,104 INFO L225 Difference]: With dead ends: 554 [2020-10-15 04:37:54,105 INFO L226 Difference]: Without dead ends: 336 [2020-10-15 04:37:54,106 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 04:37:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-15 04:37:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 232. [2020-10-15 04:37:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 04:37:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 381 transitions. [2020-10-15 04:37:54,120 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 381 transitions. Word has length 65 [2020-10-15 04:37:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:54,121 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 381 transitions. [2020-10-15 04:37:54,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 381 transitions. [2020-10-15 04:37:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:37:54,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:54,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:54,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:37:54,122 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2139749201, now seen corresponding path program 1 times [2020-10-15 04:37:54,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:54,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135707218] [2020-10-15 04:37:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:54,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:59,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:37:59,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:37:59,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:37:59,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:59,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:37:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:37:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:59,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:59,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:59,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:37:59,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:59,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:37:59,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135707218] [2020-10-15 04:37:59,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:59,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:59,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659204377] [2020-10-15 04:37:59,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:59,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:59,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:59,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:59,281 INFO L87 Difference]: Start difference. First operand 232 states and 381 transitions. Second operand 5 states. [2020-10-15 04:38:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:00,195 INFO L93 Difference]: Finished difference Result 618 states and 1021 transitions. [2020-10-15 04:38:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:00,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-15 04:38:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:00,198 INFO L225 Difference]: With dead ends: 618 [2020-10-15 04:38:00,198 INFO L226 Difference]: Without dead ends: 400 [2020-10-15 04:38:00,199 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 04:38:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-15 04:38:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 233. [2020-10-15 04:38:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:00,209 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 65 [2020-10-15 04:38:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:00,210 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:00,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:38:00,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:00,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:00,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:38:00,212 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 175124968, now seen corresponding path program 1 times [2020-10-15 04:38:00,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:00,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449091633] [2020-10-15 04:38:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:00,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:00,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:38:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:38:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-15 04:38:00,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:00,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:38:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:00,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:00,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449091633] [2020-10-15 04:38:00,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:00,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:00,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713789719] [2020-10-15 04:38:00,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:00,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:00,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:00,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:00,620 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:01,866 INFO L93 Difference]: Finished difference Result 556 states and 912 transitions. [2020-10-15 04:38:01,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:01,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-15 04:38:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:01,869 INFO L225 Difference]: With dead ends: 556 [2020-10-15 04:38:01,869 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 04:38:01,870 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 04:38:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 04:38:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 233. [2020-10-15 04:38:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:01,879 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 65 [2020-10-15 04:38:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:01,879 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:01,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:38:01,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:01,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:01,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:38:01,881 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash -878360075, now seen corresponding path program 1 times [2020-10-15 04:38:01,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:01,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114559790] [2020-10-15 04:38:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:38:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:38:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:06,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:38:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:06,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:06,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:07,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114559790] [2020-10-15 04:38:07,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:07,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:07,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944036006] [2020-10-15 04:38:07,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:07,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:07,018 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:08,211 INFO L93 Difference]: Finished difference Result 571 states and 936 transitions. [2020-10-15 04:38:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:08,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-15 04:38:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:08,215 INFO L225 Difference]: With dead ends: 571 [2020-10-15 04:38:08,215 INFO L226 Difference]: Without dead ends: 352 [2020-10-15 04:38:08,216 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 04:38:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-15 04:38:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 194. [2020-10-15 04:38:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-15 04:38:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 310 transitions. [2020-10-15 04:38:08,224 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 310 transitions. Word has length 66 [2020-10-15 04:38:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:08,224 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 310 transitions. [2020-10-15 04:38:08,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 310 transitions. [2020-10-15 04:38:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 04:38:08,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:08,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:08,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:38:08,228 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:08,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1395321639, now seen corresponding path program 1 times [2020-10-15 04:38:08,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:08,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640086905] [2020-10-15 04:38:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:08,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:38:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:38:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-15 04:38:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:08,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:38:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:38:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:08,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:08,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:08,524 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 04:38:08,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640086905] [2020-10-15 04:38:08,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:08,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:08,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011096815] [2020-10-15 04:38:08,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:08,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:08,526 INFO L87 Difference]: Start difference. First operand 194 states and 310 transitions. Second operand 5 states. [2020-10-15 04:38:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:09,633 INFO L93 Difference]: Finished difference Result 487 states and 782 transitions. [2020-10-15 04:38:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:09,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 04:38:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:09,643 INFO L225 Difference]: With dead ends: 487 [2020-10-15 04:38:09,644 INFO L226 Difference]: Without dead ends: 307 [2020-10-15 04:38:09,645 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 04:38:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-15 04:38:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 233. [2020-10-15 04:38:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:09,654 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 67 [2020-10-15 04:38:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:09,654 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:09,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:38:09,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:09,655 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] [2020-10-15 04:38:09,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:38:09,656 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:09,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1334653565, now seen corresponding path program 1 times [2020-10-15 04:38:09,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:09,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776272880] [2020-10-15 04:38:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:38:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:09,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:09,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:09,953 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 04:38:09,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776272880] [2020-10-15 04:38:09,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:09,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:09,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792363933] [2020-10-15 04:38:09,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:09,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:09,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:09,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:09,955 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:11,360 INFO L93 Difference]: Finished difference Result 517 states and 840 transitions. [2020-10-15 04:38:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:11,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:38:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:11,363 INFO L225 Difference]: With dead ends: 517 [2020-10-15 04:38:11,363 INFO L226 Difference]: Without dead ends: 298 [2020-10-15 04:38:11,365 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 04:38:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-15 04:38:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2020-10-15 04:38:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-15 04:38:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 310 transitions. [2020-10-15 04:38:11,374 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 310 transitions. Word has length 68 [2020-10-15 04:38:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:11,374 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 310 transitions. [2020-10-15 04:38:11,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 310 transitions. [2020-10-15 04:38:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:38:11,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:11,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:11,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:38:11,376 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1676776653, now seen corresponding path program 1 times [2020-10-15 04:38:11,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:11,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163134095] [2020-10-15 04:38:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:11,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:12,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:38:12,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:12,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:12,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163134095] [2020-10-15 04:38:12,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:12,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:12,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807168144] [2020-10-15 04:38:12,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:12,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:12,138 INFO L87 Difference]: Start difference. First operand 194 states and 310 transitions. Second operand 5 states. [2020-10-15 04:38:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:13,317 INFO L93 Difference]: Finished difference Result 488 states and 783 transitions. [2020-10-15 04:38:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:13,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:38:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:13,320 INFO L225 Difference]: With dead ends: 488 [2020-10-15 04:38:13,321 INFO L226 Difference]: Without dead ends: 308 [2020-10-15 04:38:13,322 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 04:38:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-15 04:38:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 234. [2020-10-15 04:38:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-15 04:38:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 383 transitions. [2020-10-15 04:38:13,331 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 383 transitions. Word has length 72 [2020-10-15 04:38:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:13,331 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 383 transitions. [2020-10-15 04:38:13,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 383 transitions. [2020-10-15 04:38:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:38:13,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:13,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:13,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:38:13,333 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:13,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1924923147, now seen corresponding path program 1 times [2020-10-15 04:38:13,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:13,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717222814] [2020-10-15 04:38:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:14,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:38:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:14,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:14,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:15,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717222814] [2020-10-15 04:38:15,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:15,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:15,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913202906] [2020-10-15 04:38:15,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:15,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:15,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:15,017 INFO L87 Difference]: Start difference. First operand 234 states and 383 transitions. Second operand 5 states. [2020-10-15 04:38:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:16,351 INFO L93 Difference]: Finished difference Result 567 states and 928 transitions. [2020-10-15 04:38:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:16,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:38:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:16,354 INFO L225 Difference]: With dead ends: 567 [2020-10-15 04:38:16,354 INFO L226 Difference]: Without dead ends: 347 [2020-10-15 04:38:16,355 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 04:38:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-15 04:38:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 233. [2020-10-15 04:38:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:16,363 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 72 [2020-10-15 04:38:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:16,364 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:16,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:38:16,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:16,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:16,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:38:16,365 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1562206785, now seen corresponding path program 1 times [2020-10-15 04:38:16,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:16,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109702085] [2020-10-15 04:38:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:38:17,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-15 04:38:17,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:38:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:17,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109702085] [2020-10-15 04:38:17,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:17,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:17,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026336060] [2020-10-15 04:38:17,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:17,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:17,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:17,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:17,293 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:18,441 INFO L93 Difference]: Finished difference Result 565 states and 926 transitions. [2020-10-15 04:38:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:18,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:38:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:18,445 INFO L225 Difference]: With dead ends: 565 [2020-10-15 04:38:18,445 INFO L226 Difference]: Without dead ends: 346 [2020-10-15 04:38:18,446 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 04:38:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-15 04:38:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 233. [2020-10-15 04:38:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:18,458 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 72 [2020-10-15 04:38:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:18,458 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:18,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:38:18,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:18,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:18,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:38:18,464 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1469824407, now seen corresponding path program 1 times [2020-10-15 04:38:18,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:18,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767003988] [2020-10-15 04:38:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:19,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:38:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:38:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:19,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:19,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:19,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767003988] [2020-10-15 04:38:19,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:19,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:19,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454477284] [2020-10-15 04:38:19,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:19,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:19,197 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:20,301 INFO L93 Difference]: Finished difference Result 557 states and 913 transitions. [2020-10-15 04:38:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:20,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:38:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:20,303 INFO L225 Difference]: With dead ends: 557 [2020-10-15 04:38:20,304 INFO L226 Difference]: Without dead ends: 338 [2020-10-15 04:38:20,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:38:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-15 04:38:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 233. [2020-10-15 04:38:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 04:38:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 382 transitions. [2020-10-15 04:38:20,312 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 382 transitions. Word has length 73 [2020-10-15 04:38:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:20,313 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 382 transitions. [2020-10-15 04:38:20,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 382 transitions. [2020-10-15 04:38:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:38:20,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:20,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:20,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:38:20,315 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash 572431129, now seen corresponding path program 1 times [2020-10-15 04:38:20,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:20,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560807732] [2020-10-15 04:38:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:38:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:38:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:21,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560807732] [2020-10-15 04:38:21,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:21,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:21,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692200213] [2020-10-15 04:38:21,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:21,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:21,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:21,554 INFO L87 Difference]: Start difference. First operand 233 states and 382 transitions. Second operand 5 states. [2020-10-15 04:38:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:22,718 INFO L93 Difference]: Finished difference Result 556 states and 912 transitions. [2020-10-15 04:38:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:22,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:38:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:22,721 INFO L225 Difference]: With dead ends: 556 [2020-10-15 04:38:22,722 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 04:38:22,723 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 04:38:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 04:38:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 232. [2020-10-15 04:38:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 04:38:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 381 transitions. [2020-10-15 04:38:22,730 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 381 transitions. Word has length 73 [2020-10-15 04:38:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:22,731 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 381 transitions. [2020-10-15 04:38:22,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 381 transitions. [2020-10-15 04:38:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:38:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:22,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:22,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:38:22,733 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash -154414363, now seen corresponding path program 1 times [2020-10-15 04:38:22,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593831137] [2020-10-15 04:38:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:23,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:38:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:23,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593831137] [2020-10-15 04:38:23,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:23,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:23,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470233452] [2020-10-15 04:38:23,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:23,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:23,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:23,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:23,663 INFO L87 Difference]: Start difference. First operand 232 states and 381 transitions. Second operand 5 states. [2020-10-15 04:38:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:24,757 INFO L93 Difference]: Finished difference Result 515 states and 838 transitions. [2020-10-15 04:38:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:24,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:38:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:24,760 INFO L225 Difference]: With dead ends: 515 [2020-10-15 04:38:24,760 INFO L226 Difference]: Without dead ends: 297 [2020-10-15 04:38:24,761 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 04:38:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-15 04:38:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 193. [2020-10-15 04:38:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 04:38:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 309 transitions. [2020-10-15 04:38:24,768 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 309 transitions. Word has length 73 [2020-10-15 04:38:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:24,768 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 309 transitions. [2020-10-15 04:38:24,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 309 transitions. [2020-10-15 04:38:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 04:38:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:24,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:24,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:38:24,770 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1073706911, now seen corresponding path program 1 times [2020-10-15 04:38:24,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:24,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815743836] [2020-10-15 04:38:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:26,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:38:26,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-15 04:38:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 04:38:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:38:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:26,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:26,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:38:26,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:26,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:26,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815743836] [2020-10-15 04:38:26,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:26,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:26,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578523361] [2020-10-15 04:38:26,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:26,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:26,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:26,140 INFO L87 Difference]: Start difference. First operand 193 states and 309 transitions. Second operand 5 states. [2020-10-15 04:38:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:27,431 INFO L93 Difference]: Finished difference Result 485 states and 780 transitions. [2020-10-15 04:38:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:27,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-15 04:38:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:27,433 INFO L225 Difference]: With dead ends: 485 [2020-10-15 04:38:27,433 INFO L226 Difference]: Without dead ends: 306 [2020-10-15 04:38:27,434 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 04:38:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-15 04:38:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 232. [2020-10-15 04:38:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 04:38:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 381 transitions. [2020-10-15 04:38:27,442 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 381 transitions. Word has length 75 [2020-10-15 04:38:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:27,443 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 381 transitions. [2020-10-15 04:38:27,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 381 transitions. [2020-10-15 04:38:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:38:27,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:27,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:27,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:38:27,445 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:27,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2104179843, now seen corresponding path program 1 times [2020-10-15 04:38:27,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:27,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409616214] [2020-10-15 04:38:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:27,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:28,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 04:38:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:28,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:28,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:28,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409616214] [2020-10-15 04:38:28,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:28,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:28,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204292298] [2020-10-15 04:38:28,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:28,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:28,377 INFO L87 Difference]: Start difference. First operand 232 states and 381 transitions. Second operand 5 states. [2020-10-15 04:38:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:29,451 INFO L93 Difference]: Finished difference Result 515 states and 838 transitions. [2020-10-15 04:38:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:29,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:38:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:29,454 INFO L225 Difference]: With dead ends: 515 [2020-10-15 04:38:29,454 INFO L226 Difference]: Without dead ends: 297 [2020-10-15 04:38:29,455 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 04:38:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-15 04:38:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 193. [2020-10-15 04:38:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 04:38:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 309 transitions. [2020-10-15 04:38:29,462 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 309 transitions. Word has length 76 [2020-10-15 04:38:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:29,462 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 309 transitions. [2020-10-15 04:38:29,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 309 transitions. [2020-10-15 04:38:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:38:29,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:29,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:29,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:38:29,464 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash -824125302, now seen corresponding path program 1 times [2020-10-15 04:38:29,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:29,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486867048] [2020-10-15 04:38:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:33,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4433 [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:38:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:33,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:33,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:33,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486867048] [2020-10-15 04:38:33,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:33,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:33,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386486769] [2020-10-15 04:38:33,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:33,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:34,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:34,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:34,000 INFO L87 Difference]: Start difference. First operand 193 states and 309 transitions. Second operand 5 states. [2020-10-15 04:38:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:35,125 INFO L93 Difference]: Finished difference Result 485 states and 780 transitions. [2020-10-15 04:38:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:35,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:38:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:35,127 INFO L225 Difference]: With dead ends: 485 [2020-10-15 04:38:35,127 INFO L226 Difference]: Without dead ends: 306 [2020-10-15 04:38:35,128 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 04:38:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-15 04:38:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 232. [2020-10-15 04:38:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 04:38:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 381 transitions. [2020-10-15 04:38:35,135 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 381 transitions. Word has length 78 [2020-10-15 04:38:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:35,136 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 381 transitions. [2020-10-15 04:38:35,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 381 transitions. [2020-10-15 04:38:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:38:35,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:35,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:35,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:38:35,138 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:35,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1251275130, now seen corresponding path program 1 times [2020-10-15 04:38:35,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:35,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470062267] [2020-10-15 04:38:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3499 [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:38:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:38,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:38,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:38,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:38,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470062267] [2020-10-15 04:38:38,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:38,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:38,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320744260] [2020-10-15 04:38:38,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:38,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:38,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:38,721 INFO L87 Difference]: Start difference. First operand 232 states and 381 transitions. Second operand 5 states. [2020-10-15 04:38:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:39,795 INFO L93 Difference]: Finished difference Result 515 states and 838 transitions. [2020-10-15 04:38:39,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:39,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:38:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:39,801 INFO L225 Difference]: With dead ends: 515 [2020-10-15 04:38:39,801 INFO L226 Difference]: Without dead ends: 297 [2020-10-15 04:38:39,803 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 04:38:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-15 04:38:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 193. [2020-10-15 04:38:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 04:38:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 309 transitions. [2020-10-15 04:38:39,815 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 309 transitions. Word has length 79 [2020-10-15 04:38:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:39,816 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 309 transitions. [2020-10-15 04:38:39,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 309 transitions. [2020-10-15 04:38:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:38:39,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:39,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:39,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:38:39,817 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:39,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1704386781, now seen corresponding path program 1 times [2020-10-15 04:38:39,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:39,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694894300] [2020-10-15 04:38:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:38:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:38:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:40,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694894300] [2020-10-15 04:38:40,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:40,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:40,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237496029] [2020-10-15 04:38:40,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:40,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:40,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:40,135 INFO L87 Difference]: Start difference. First operand 193 states and 309 transitions. Second operand 5 states. [2020-10-15 04:38:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:41,031 INFO L93 Difference]: Finished difference Result 465 states and 748 transitions. [2020-10-15 04:38:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:41,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:38:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:41,039 INFO L225 Difference]: With dead ends: 465 [2020-10-15 04:38:41,040 INFO L226 Difference]: Without dead ends: 286 [2020-10-15 04:38:41,041 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 04:38:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-15 04:38:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 217. [2020-10-15 04:38:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-15 04:38:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 354 transitions. [2020-10-15 04:38:41,048 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 354 transitions. Word has length 79 [2020-10-15 04:38:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:41,049 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 354 transitions. [2020-10-15 04:38:41,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 354 transitions. [2020-10-15 04:38:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 04:38:41,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:41,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:41,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:38:41,050 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:41,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1520134970, now seen corresponding path program 1 times [2020-10-15 04:38:41,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:41,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510297400] [2020-10-15 04:38:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:43,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:43,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 04:38:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 04:38:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:43,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:43,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:43,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:43,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510297400] [2020-10-15 04:38:43,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:38:43,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:38:43,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732520830] [2020-10-15 04:38:43,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:38:43,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:43,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:38:43,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:38:43,813 INFO L87 Difference]: Start difference. First operand 217 states and 354 transitions. Second operand 8 states. [2020-10-15 04:38:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:45,841 INFO L93 Difference]: Finished difference Result 760 states and 1239 transitions. [2020-10-15 04:38:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:38:45,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-15 04:38:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:45,845 INFO L225 Difference]: With dead ends: 760 [2020-10-15 04:38:45,845 INFO L226 Difference]: Without dead ends: 581 [2020-10-15 04:38:45,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:38:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-15 04:38:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 438. [2020-10-15 04:38:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-15 04:38:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 734 transitions. [2020-10-15 04:38:45,861 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 734 transitions. Word has length 81 [2020-10-15 04:38:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:45,862 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 734 transitions. [2020-10-15 04:38:45,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:38:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 734 transitions. [2020-10-15 04:38:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 04:38:45,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:45,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:45,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:38:45,864 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2100032026, now seen corresponding path program 1 times [2020-10-15 04:38:45,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:45,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795538962] [2020-10-15 04:38:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:46,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:38:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:38:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:46,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:47,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795538962] [2020-10-15 04:38:47,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:47,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:38:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864140751] [2020-10-15 04:38:47,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:38:47,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:47,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:38:47,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:38:47,009 INFO L87 Difference]: Start difference. First operand 438 states and 734 transitions. Second operand 4 states. [2020-10-15 04:38:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:47,646 INFO L93 Difference]: Finished difference Result 1232 states and 2070 transitions. [2020-10-15 04:38:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:38:47,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-15 04:38:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:47,652 INFO L225 Difference]: With dead ends: 1232 [2020-10-15 04:38:47,652 INFO L226 Difference]: Without dead ends: 832 [2020-10-15 04:38:47,653 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 04:38:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-15 04:38:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 825. [2020-10-15 04:38:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-15 04:38:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1356 transitions. [2020-10-15 04:38:47,675 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1356 transitions. Word has length 82 [2020-10-15 04:38:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:47,676 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1356 transitions. [2020-10-15 04:38:47,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:38:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1356 transitions. [2020-10-15 04:38:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 04:38:47,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:47,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:47,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:38:47,679 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1297541992, now seen corresponding path program 1 times [2020-10-15 04:38:47,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:47,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311079937] [2020-10-15 04:38:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 04:38:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:48,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:48,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311079937] [2020-10-15 04:38:48,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:48,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:48,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035870795] [2020-10-15 04:38:48,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:48,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:48,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:48,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:48,833 INFO L87 Difference]: Start difference. First operand 825 states and 1356 transitions. Second operand 5 states. [2020-10-15 04:38:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:49,997 INFO L93 Difference]: Finished difference Result 1643 states and 2677 transitions. [2020-10-15 04:38:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:49,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-15 04:38:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:50,003 INFO L225 Difference]: With dead ends: 1643 [2020-10-15 04:38:50,004 INFO L226 Difference]: Without dead ends: 1238 [2020-10-15 04:38:50,005 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 04:38:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-10-15 04:38:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 981. [2020-10-15 04:38:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-10-15 04:38:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1644 transitions. [2020-10-15 04:38:50,033 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1644 transitions. Word has length 82 [2020-10-15 04:38:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:50,034 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1644 transitions. [2020-10-15 04:38:50,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1644 transitions. [2020-10-15 04:38:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 04:38:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:50,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:50,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:38:50,037 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1696515492, now seen corresponding path program 1 times [2020-10-15 04:38:50,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:50,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409785202] [2020-10-15 04:38:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:50,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 04:38:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:50,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:50,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409785202] [2020-10-15 04:38:50,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:50,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:50,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644387073] [2020-10-15 04:38:50,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:50,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:50,869 INFO L87 Difference]: Start difference. First operand 981 states and 1644 transitions. Second operand 5 states. [2020-10-15 04:38:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:52,051 INFO L93 Difference]: Finished difference Result 1700 states and 2787 transitions. [2020-10-15 04:38:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:52,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-15 04:38:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:52,057 INFO L225 Difference]: With dead ends: 1700 [2020-10-15 04:38:52,057 INFO L226 Difference]: Without dead ends: 1217 [2020-10-15 04:38:52,059 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 04:38:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-15 04:38:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 825. [2020-10-15 04:38:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-15 04:38:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1356 transitions. [2020-10-15 04:38:52,083 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1356 transitions. Word has length 83 [2020-10-15 04:38:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:52,084 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1356 transitions. [2020-10-15 04:38:52,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1356 transitions. [2020-10-15 04:38:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 04:38:52,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:52,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:52,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:38:52,087 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1481714383, now seen corresponding path program 1 times [2020-10-15 04:38:52,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:52,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602614134] [2020-10-15 04:38:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:38:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:52,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:38:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:52,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:52,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602614134] [2020-10-15 04:38:52,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:52,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:52,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602584863] [2020-10-15 04:38:52,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:52,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:52,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:52,708 INFO L87 Difference]: Start difference. First operand 825 states and 1356 transitions. Second operand 5 states. [2020-10-15 04:38:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:53,906 INFO L93 Difference]: Finished difference Result 1643 states and 2677 transitions. [2020-10-15 04:38:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:53,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-15 04:38:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:53,913 INFO L225 Difference]: With dead ends: 1643 [2020-10-15 04:38:53,913 INFO L226 Difference]: Without dead ends: 1238 [2020-10-15 04:38:53,915 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 04:38:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-10-15 04:38:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 981. [2020-10-15 04:38:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-10-15 04:38:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1644 transitions. [2020-10-15 04:38:53,952 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1644 transitions. Word has length 83 [2020-10-15 04:38:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:53,952 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1644 transitions. [2020-10-15 04:38:53,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1644 transitions. [2020-10-15 04:38:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 04:38:53,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:53,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:53,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:38:53,956 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1364717168, now seen corresponding path program 1 times [2020-10-15 04:38:53,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:53,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928577522] [2020-10-15 04:38:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:54,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:38:54,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:54,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-15 04:38:54,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:54,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:38:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:38:54,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:54,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:54,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:54,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:54,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:54,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928577522] [2020-10-15 04:38:54,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:54,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:54,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000669951] [2020-10-15 04:38:54,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:54,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:54,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:54,991 INFO L87 Difference]: Start difference. First operand 981 states and 1644 transitions. Second operand 5 states. [2020-10-15 04:38:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:56,154 INFO L93 Difference]: Finished difference Result 1877 states and 3109 transitions. [2020-10-15 04:38:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:56,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-15 04:38:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:56,162 INFO L225 Difference]: With dead ends: 1877 [2020-10-15 04:38:56,165 INFO L226 Difference]: Without dead ends: 1394 [2020-10-15 04:38:56,169 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 04:38:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-15 04:38:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 981. [2020-10-15 04:38:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-10-15 04:38:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1644 transitions. [2020-10-15 04:38:56,205 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1644 transitions. Word has length 84 [2020-10-15 04:38:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:56,205 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1644 transitions. [2020-10-15 04:38:56,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1644 transitions. [2020-10-15 04:38:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 04:38:56,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:56,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:56,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:38:56,208 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:56,209 INFO L82 PathProgramCache]: Analyzing trace with hash -282138667, now seen corresponding path program 1 times [2020-10-15 04:38:56,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:56,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670662787] [2020-10-15 04:38:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:38:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:38:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:57,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670662787] [2020-10-15 04:38:57,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:57,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:57,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960450217] [2020-10-15 04:38:57,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:57,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:57,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:57,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:57,183 INFO L87 Difference]: Start difference. First operand 981 states and 1644 transitions. Second operand 5 states. [2020-10-15 04:38:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:58,258 INFO L93 Difference]: Finished difference Result 2262 states and 3754 transitions. [2020-10-15 04:38:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:58,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-15 04:38:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:58,265 INFO L225 Difference]: With dead ends: 2262 [2020-10-15 04:38:58,265 INFO L226 Difference]: Without dead ends: 1319 [2020-10-15 04:38:58,268 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 04:38:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-15 04:38:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1129. [2020-10-15 04:38:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-15 04:38:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1916 transitions. [2020-10-15 04:38:58,300 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1916 transitions. Word has length 84 [2020-10-15 04:38:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:58,300 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1916 transitions. [2020-10-15 04:38:58,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1916 transitions. [2020-10-15 04:38:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 04:38:58,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:58,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:58,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:38:58,304 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:58,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1672796468, now seen corresponding path program 1 times [2020-10-15 04:38:58,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:58,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174766520] [2020-10-15 04:38:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:59,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:59,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:38:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:59,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:59,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:38:59,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174766520] [2020-10-15 04:38:59,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:59,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076028670] [2020-10-15 04:38:59,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:59,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:59,309 INFO L87 Difference]: Start difference. First operand 1129 states and 1916 transitions. Second operand 5 states. [2020-10-15 04:39:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:00,426 INFO L93 Difference]: Finished difference Result 1922 states and 3195 transitions. [2020-10-15 04:39:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:00,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-15 04:39:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:00,436 INFO L225 Difference]: With dead ends: 1922 [2020-10-15 04:39:00,436 INFO L226 Difference]: Without dead ends: 1365 [2020-10-15 04:39:00,438 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 04:39:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-15 04:39:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 973. [2020-10-15 04:39:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-15 04:39:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1628 transitions. [2020-10-15 04:39:00,463 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1628 transitions. Word has length 85 [2020-10-15 04:39:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:00,464 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1628 transitions. [2020-10-15 04:39:00,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1628 transitions. [2020-10-15 04:39:00,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 04:39:00,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:00,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:00,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:39:00,467 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1366315433, now seen corresponding path program 1 times [2020-10-15 04:39:00,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:00,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389352438] [2020-10-15 04:39:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:39:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:00,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:00,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389352438] [2020-10-15 04:39:00,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:00,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:00,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494350822] [2020-10-15 04:39:00,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:00,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:00,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:00,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:00,778 INFO L87 Difference]: Start difference. First operand 973 states and 1628 transitions. Second operand 5 states. [2020-10-15 04:39:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:01,715 INFO L93 Difference]: Finished difference Result 1978 states and 3286 transitions. [2020-10-15 04:39:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:01,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-15 04:39:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:01,720 INFO L225 Difference]: With dead ends: 1978 [2020-10-15 04:39:01,720 INFO L226 Difference]: Without dead ends: 1043 [2020-10-15 04:39:01,722 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 04:39:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-10-15 04:39:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 978. [2020-10-15 04:39:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-10-15 04:39:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1637 transitions. [2020-10-15 04:39:01,748 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1637 transitions. Word has length 85 [2020-10-15 04:39:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:01,748 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1637 transitions. [2020-10-15 04:39:01,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1637 transitions. [2020-10-15 04:39:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 04:39:01,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:01,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:01,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:39:01,752 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -801617199, now seen corresponding path program 1 times [2020-10-15 04:39:01,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:01,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604612801] [2020-10-15 04:39:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:02,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:39:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:39:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:02,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604612801] [2020-10-15 04:39:02,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:02,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:02,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829470647] [2020-10-15 04:39:02,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:02,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:02,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:02,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:02,080 INFO L87 Difference]: Start difference. First operand 978 states and 1637 transitions. Second operand 5 states. [2020-10-15 04:39:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:03,027 INFO L93 Difference]: Finished difference Result 1975 states and 3282 transitions. [2020-10-15 04:39:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:03,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-15 04:39:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:03,033 INFO L225 Difference]: With dead ends: 1975 [2020-10-15 04:39:03,033 INFO L226 Difference]: Without dead ends: 1040 [2020-10-15 04:39:03,038 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 04:39:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-10-15 04:39:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 979. [2020-10-15 04:39:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-15 04:39:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1638 transitions. [2020-10-15 04:39:03,067 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1638 transitions. Word has length 86 [2020-10-15 04:39:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:03,067 INFO L479 AbstractCegarLoop]: Abstraction has 979 states and 1638 transitions. [2020-10-15 04:39:03,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1638 transitions. [2020-10-15 04:39:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:39:03,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:03,071 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-15 04:39:03,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:39:03,072 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1189111100, now seen corresponding path program 1 times [2020-10-15 04:39:03,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:03,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441602132] [2020-10-15 04:39:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:04,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:39:04,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 04:39:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:39:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:39:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:04,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441602132] [2020-10-15 04:39:04,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:04,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:39:04,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329775556] [2020-10-15 04:39:04,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:39:04,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:04,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:39:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:39:04,540 INFO L87 Difference]: Start difference. First operand 979 states and 1638 transitions. Second operand 10 states. [2020-10-15 04:39:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:08,557 INFO L93 Difference]: Finished difference Result 2428 states and 3963 transitions. [2020-10-15 04:39:08,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:39:08,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-15 04:39:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:08,565 INFO L225 Difference]: With dead ends: 2428 [2020-10-15 04:39:08,565 INFO L226 Difference]: Without dead ends: 1949 [2020-10-15 04:39:08,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:39:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-15 04:39:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1457. [2020-10-15 04:39:08,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-15 04:39:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2478 transitions. [2020-10-15 04:39:08,601 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2478 transitions. Word has length 92 [2020-10-15 04:39:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:08,601 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 2478 transitions. [2020-10-15 04:39:08,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:39:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2478 transitions. [2020-10-15 04:39:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:39:08,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:08,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:08,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:39:08,606 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1374431548, now seen corresponding path program 1 times [2020-10-15 04:39:08,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:08,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992578606] [2020-10-15 04:39:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:13,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:39:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:13,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992578606] [2020-10-15 04:39:13,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:13,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:13,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122008882] [2020-10-15 04:39:13,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:13,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:13,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:13,693 INFO L87 Difference]: Start difference. First operand 1457 states and 2478 transitions. Second operand 5 states. [2020-10-15 04:39:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:14,830 INFO L93 Difference]: Finished difference Result 2150 states and 3599 transitions. [2020-10-15 04:39:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:14,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-15 04:39:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:14,837 INFO L225 Difference]: With dead ends: 2150 [2020-10-15 04:39:14,837 INFO L226 Difference]: Without dead ends: 1659 [2020-10-15 04:39:14,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:39:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-10-15 04:39:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1521. [2020-10-15 04:39:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-10-15 04:39:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2594 transitions. [2020-10-15 04:39:14,874 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2594 transitions. Word has length 93 [2020-10-15 04:39:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:14,874 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 2594 transitions. [2020-10-15 04:39:14,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2594 transitions. [2020-10-15 04:39:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:39:14,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:14,878 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-15 04:39:14,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:39:14,879 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1473350016, now seen corresponding path program 1 times [2020-10-15 04:39:14,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:14,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088305092] [2020-10-15 04:39:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:39:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 04:39:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:16,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:16,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:16,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:16,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088305092] [2020-10-15 04:39:16,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:16,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:39:16,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74773426] [2020-10-15 04:39:16,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:39:16,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:39:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:39:16,104 INFO L87 Difference]: Start difference. First operand 1521 states and 2594 transitions. Second operand 9 states. [2020-10-15 04:39:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:19,802 INFO L93 Difference]: Finished difference Result 2919 states and 4875 transitions. [2020-10-15 04:39:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:39:19,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-15 04:39:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:19,812 INFO L225 Difference]: With dead ends: 2919 [2020-10-15 04:39:19,812 INFO L226 Difference]: Without dead ends: 2164 [2020-10-15 04:39:19,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:39:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-10-15 04:39:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1443. [2020-10-15 04:39:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-15 04:39:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2450 transitions. [2020-10-15 04:39:19,849 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2450 transitions. Word has length 93 [2020-10-15 04:39:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:19,849 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2450 transitions. [2020-10-15 04:39:19,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:39:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2450 transitions. [2020-10-15 04:39:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:39:19,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:19,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:19,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 04:39:19,854 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:19,854 INFO L82 PathProgramCache]: Analyzing trace with hash -211211002, now seen corresponding path program 1 times [2020-10-15 04:39:19,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:19,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778638811] [2020-10-15 04:39:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:39:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:20,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:20,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778638811] [2020-10-15 04:39:20,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:20,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:20,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014318782] [2020-10-15 04:39:20,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:20,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:20,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:20,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:20,280 INFO L87 Difference]: Start difference. First operand 1443 states and 2450 transitions. Second operand 5 states. [2020-10-15 04:39:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:21,486 INFO L93 Difference]: Finished difference Result 3369 states and 5657 transitions. [2020-10-15 04:39:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:21,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-15 04:39:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:21,495 INFO L225 Difference]: With dead ends: 3369 [2020-10-15 04:39:21,495 INFO L226 Difference]: Without dead ends: 1970 [2020-10-15 04:39:21,498 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 04:39:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2020-10-15 04:39:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1574. [2020-10-15 04:39:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-10-15 04:39:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2685 transitions. [2020-10-15 04:39:21,532 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2685 transitions. Word has length 93 [2020-10-15 04:39:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:21,532 INFO L479 AbstractCegarLoop]: Abstraction has 1574 states and 2685 transitions. [2020-10-15 04:39:21,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2685 transitions. [2020-10-15 04:39:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 04:39:21,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:21,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:21,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 04:39:21,536 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:21,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:21,536 INFO L82 PathProgramCache]: Analyzing trace with hash 429449107, now seen corresponding path program 1 times [2020-10-15 04:39:21,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:21,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742307775] [2020-10-15 04:39:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:26,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:39:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:26,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:26,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:26,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:26,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 04:39:26,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742307775] [2020-10-15 04:39:26,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:26,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:39:26,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133821624] [2020-10-15 04:39:26,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:39:26,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:26,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:39:26,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:39:26,706 INFO L87 Difference]: Start difference. First operand 1574 states and 2685 transitions. Second operand 8 states. [2020-10-15 04:39:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:28,598 INFO L93 Difference]: Finished difference Result 3640 states and 6174 transitions. [2020-10-15 04:39:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:39:28,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-15 04:39:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:28,604 INFO L225 Difference]: With dead ends: 3640 [2020-10-15 04:39:28,604 INFO L226 Difference]: Without dead ends: 2091 [2020-10-15 04:39:28,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:39:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2020-10-15 04:39:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1974. [2020-10-15 04:39:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-10-15 04:39:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3369 transitions. [2020-10-15 04:39:28,654 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3369 transitions. Word has length 94 [2020-10-15 04:39:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:28,654 INFO L479 AbstractCegarLoop]: Abstraction has 1974 states and 3369 transitions. [2020-10-15 04:39:28,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:39:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3369 transitions. [2020-10-15 04:39:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 04:39:28,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:28,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:28,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 04:39:28,657 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1760041251, now seen corresponding path program 1 times [2020-10-15 04:39:28,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:28,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406884221] [2020-10-15 04:39:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:33,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 04:39:33,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:39:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:39:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:33,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:33,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:33,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406884221] [2020-10-15 04:39:33,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:33,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:33,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126294950] [2020-10-15 04:39:33,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:33,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:33,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:33,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:33,754 INFO L87 Difference]: Start difference. First operand 1974 states and 3369 transitions. Second operand 5 states. [2020-10-15 04:39:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:34,833 INFO L93 Difference]: Finished difference Result 2732 states and 4605 transitions. [2020-10-15 04:39:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:34,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-15 04:39:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:34,838 INFO L225 Difference]: With dead ends: 2732 [2020-10-15 04:39:34,838 INFO L226 Difference]: Without dead ends: 2176 [2020-10-15 04:39:34,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:39:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-10-15 04:39:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2030. [2020-10-15 04:39:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-10-15 04:39:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3469 transitions. [2020-10-15 04:39:34,887 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3469 transitions. Word has length 95 [2020-10-15 04:39:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:34,888 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 3469 transitions. [2020-10-15 04:39:34,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3469 transitions. [2020-10-15 04:39:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 04:39:34,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:34,891 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:34,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 04:39:34,892 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1393145066, now seen corresponding path program 1 times [2020-10-15 04:39:34,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:34,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006592506] [2020-10-15 04:39:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:39:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:39,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006592506] [2020-10-15 04:39:39,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:39,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:39,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964044133] [2020-10-15 04:39:39,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:39,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:39,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:39,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:39,972 INFO L87 Difference]: Start difference. First operand 2030 states and 3469 transitions. Second operand 5 states. [2020-10-15 04:39:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:41,010 INFO L93 Difference]: Finished difference Result 2772 states and 4677 transitions. [2020-10-15 04:39:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:41,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-15 04:39:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:41,016 INFO L225 Difference]: With dead ends: 2772 [2020-10-15 04:39:41,016 INFO L226 Difference]: Without dead ends: 2160 [2020-10-15 04:39:41,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:39:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2020-10-15 04:39:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2032. [2020-10-15 04:39:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2020-10-15 04:39:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 3471 transitions. [2020-10-15 04:39:41,078 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 3471 transitions. Word has length 96 [2020-10-15 04:39:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:41,079 INFO L479 AbstractCegarLoop]: Abstraction has 2032 states and 3471 transitions. [2020-10-15 04:39:41,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 3471 transitions. [2020-10-15 04:39:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 04:39:41,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:41,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:41,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 04:39:41,084 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1501156325, now seen corresponding path program 1 times [2020-10-15 04:39:41,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:41,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979493960] [2020-10-15 04:39:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:41,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 04:39:41,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-15 04:39:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:41,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:39:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:39:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:41,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:41,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:41,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:41,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:41,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:41,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:39:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:41,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979493960] [2020-10-15 04:39:41,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:41,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:41,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847177771] [2020-10-15 04:39:41,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:41,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:41,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:41,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:41,671 INFO L87 Difference]: Start difference. First operand 2032 states and 3471 transitions. Second operand 5 states. [2020-10-15 04:39:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:42,900 INFO L93 Difference]: Finished difference Result 4711 states and 7966 transitions. [2020-10-15 04:39:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:42,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-15 04:39:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:42,910 INFO L225 Difference]: With dead ends: 4711 [2020-10-15 04:39:42,910 INFO L226 Difference]: Without dead ends: 2704 [2020-10-15 04:39:42,914 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 04:39:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-10-15 04:39:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2032. [2020-10-15 04:39:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2020-10-15 04:39:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 3471 transitions. [2020-10-15 04:39:42,977 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 3471 transitions. Word has length 96 [2020-10-15 04:39:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:42,978 INFO L479 AbstractCegarLoop]: Abstraction has 2032 states and 3471 transitions. [2020-10-15 04:39:42,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 3471 transitions. [2020-10-15 04:39:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 04:39:42,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:42,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:42,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 04:39:42,982 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:42,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:42,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1600192080, now seen corresponding path program 1 times [2020-10-15 04:39:42,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:42,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271121922] [2020-10-15 04:39:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:47,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:39:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:47,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271121922] [2020-10-15 04:39:47,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:47,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:47,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899883975] [2020-10-15 04:39:47,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:47,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:47,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:47,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:47,283 INFO L87 Difference]: Start difference. First operand 2032 states and 3471 transitions. Second operand 5 states. [2020-10-15 04:39:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:48,353 INFO L93 Difference]: Finished difference Result 2774 states and 4677 transitions. [2020-10-15 04:39:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:48,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-15 04:39:48,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:48,358 INFO L225 Difference]: With dead ends: 2774 [2020-10-15 04:39:48,358 INFO L226 Difference]: Without dead ends: 2160 [2020-10-15 04:39:48,360 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 04:39:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2020-10-15 04:39:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2048. [2020-10-15 04:39:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-10-15 04:39:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 3499 transitions. [2020-10-15 04:39:48,421 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 3499 transitions. Word has length 99 [2020-10-15 04:39:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:48,422 INFO L479 AbstractCegarLoop]: Abstraction has 2048 states and 3499 transitions. [2020-10-15 04:39:48,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 3499 transitions. [2020-10-15 04:39:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 04:39:48,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:48,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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] [2020-10-15 04:39:48,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 04:39:48,427 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash -524777990, now seen corresponding path program 1 times [2020-10-15 04:39:48,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:48,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347383267] [2020-10-15 04:39:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:39:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:48,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:48,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347383267] [2020-10-15 04:39:48,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:48,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:48,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073432378] [2020-10-15 04:39:48,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:48,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:48,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:48,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:48,817 INFO L87 Difference]: Start difference. First operand 2048 states and 3499 transitions. Second operand 5 states. [2020-10-15 04:39:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:50,040 INFO L93 Difference]: Finished difference Result 4743 states and 8014 transitions. [2020-10-15 04:39:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:50,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-15 04:39:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:50,045 INFO L225 Difference]: With dead ends: 4743 [2020-10-15 04:39:50,046 INFO L226 Difference]: Without dead ends: 2720 [2020-10-15 04:39:50,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:39:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2020-10-15 04:39:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2328. [2020-10-15 04:39:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2020-10-15 04:39:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 4007 transitions. [2020-10-15 04:39:50,113 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 4007 transitions. Word has length 99 [2020-10-15 04:39:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:50,114 INFO L479 AbstractCegarLoop]: Abstraction has 2328 states and 4007 transitions. [2020-10-15 04:39:50,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 4007 transitions. [2020-10-15 04:39:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:39:50,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:50,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:50,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 04:39:50,118 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 538141336, now seen corresponding path program 1 times [2020-10-15 04:39:50,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:50,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294017831] [2020-10-15 04:39:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4606 [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:54,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:39:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:54,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:54,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294017831] [2020-10-15 04:39:54,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:54,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:54,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353086508] [2020-10-15 04:39:54,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:54,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:54,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:54,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:54,813 INFO L87 Difference]: Start difference. First operand 2328 states and 4007 transitions. Second operand 5 states. [2020-10-15 04:39:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:55,876 INFO L93 Difference]: Finished difference Result 3138 states and 5338 transitions. [2020-10-15 04:39:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:55,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 04:39:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:55,881 INFO L225 Difference]: With dead ends: 3138 [2020-10-15 04:39:55,881 INFO L226 Difference]: Without dead ends: 2450 [2020-10-15 04:39:55,882 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 04:39:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2020-10-15 04:39:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2346. [2020-10-15 04:39:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2020-10-15 04:39:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 4037 transitions. [2020-10-15 04:39:55,949 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 4037 transitions. Word has length 100 [2020-10-15 04:39:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:55,950 INFO L479 AbstractCegarLoop]: Abstraction has 2346 states and 4037 transitions. [2020-10-15 04:39:55,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 4037 transitions. [2020-10-15 04:39:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:39:55,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:55,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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] [2020-10-15 04:39:55,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 04:39:55,955 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash -483760242, now seen corresponding path program 1 times [2020-10-15 04:39:55,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:55,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853716588] [2020-10-15 04:39:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:56,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:39:56,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:39:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:56,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:56,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853716588] [2020-10-15 04:39:56,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:56,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:56,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262562925] [2020-10-15 04:39:56,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:56,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:56,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:56,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:56,377 INFO L87 Difference]: Start difference. First operand 2346 states and 4037 transitions. Second operand 5 states. [2020-10-15 04:39:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:57,622 INFO L93 Difference]: Finished difference Result 5019 states and 8518 transitions. [2020-10-15 04:39:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:57,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 04:39:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:57,625 INFO L225 Difference]: With dead ends: 5019 [2020-10-15 04:39:57,625 INFO L226 Difference]: Without dead ends: 2698 [2020-10-15 04:39:57,629 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 04:39:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-10-15 04:39:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2328. [2020-10-15 04:39:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2020-10-15 04:39:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 4007 transitions. [2020-10-15 04:39:57,706 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 4007 transitions. Word has length 100 [2020-10-15 04:39:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:57,706 INFO L479 AbstractCegarLoop]: Abstraction has 2328 states and 4007 transitions. [2020-10-15 04:39:57,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 4007 transitions. [2020-10-15 04:39:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 04:39:57,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:57,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2020-10-15 04:39:57,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 04:39:57,713 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1811068689, now seen corresponding path program 1 times [2020-10-15 04:39:57,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:57,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811271508] [2020-10-15 04:39:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:39:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:58,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:58,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:58,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:58,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811271508] [2020-10-15 04:39:58,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:58,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:39:58,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368204852] [2020-10-15 04:39:58,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:39:58,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:58,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:39:58,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:39:58,256 INFO L87 Difference]: Start difference. First operand 2328 states and 4007 transitions. Second operand 4 states. [2020-10-15 04:39:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:58,935 INFO L93 Difference]: Finished difference Result 4652 states and 8059 transitions. [2020-10-15 04:39:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:39:58,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-15 04:39:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:58,941 INFO L225 Difference]: With dead ends: 4652 [2020-10-15 04:39:58,941 INFO L226 Difference]: Without dead ends: 3482 [2020-10-15 04:39:58,943 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 04:39:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2020-10-15 04:39:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3456. [2020-10-15 04:39:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3456 states. [2020-10-15 04:39:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3456 states to 3456 states and 5941 transitions. [2020-10-15 04:39:59,039 INFO L78 Accepts]: Start accepts. Automaton has 3456 states and 5941 transitions. Word has length 102 [2020-10-15 04:39:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:59,040 INFO L479 AbstractCegarLoop]: Abstraction has 3456 states and 5941 transitions. [2020-10-15 04:39:59,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:39:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3456 states and 5941 transitions. [2020-10-15 04:39:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 04:39:59,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:59,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2020-10-15 04:39:59,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 04:39:59,046 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2059215183, now seen corresponding path program 1 times [2020-10-15 04:39:59,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:59,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167864017] [2020-10-15 04:39:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:39:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:39:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:59,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:59,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:59,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:39:59,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167864017] [2020-10-15 04:39:59,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:59,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:59,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560634187] [2020-10-15 04:39:59,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:59,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:59,381 INFO L87 Difference]: Start difference. First operand 3456 states and 5941 transitions. Second operand 5 states. [2020-10-15 04:40:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:00,606 INFO L93 Difference]: Finished difference Result 7511 states and 12716 transitions. [2020-10-15 04:40:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:00,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-15 04:40:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:00,612 INFO L225 Difference]: With dead ends: 7511 [2020-10-15 04:40:00,612 INFO L226 Difference]: Without dead ends: 4080 [2020-10-15 04:40:00,617 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 04:40:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2020-10-15 04:40:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3516. [2020-10-15 04:40:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3516 states. [2020-10-15 04:40:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 6049 transitions. [2020-10-15 04:40:00,684 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 6049 transitions. Word has length 102 [2020-10-15 04:40:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:00,684 INFO L479 AbstractCegarLoop]: Abstraction has 3516 states and 6049 transitions. [2020-10-15 04:40:00,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 6049 transitions. [2020-10-15 04:40:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:40:00,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:00,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2020-10-15 04:40:00,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 04:40:00,689 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:00,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1984350503, now seen corresponding path program 1 times [2020-10-15 04:40:00,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:00,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936997548] [2020-10-15 04:40:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:01,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:01,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 04:40:01,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:40:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:01,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936997548] [2020-10-15 04:40:01,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:01,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:01,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026819558] [2020-10-15 04:40:01,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:01,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:01,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:01,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:01,071 INFO L87 Difference]: Start difference. First operand 3516 states and 6049 transitions. Second operand 5 states. [2020-10-15 04:40:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:02,299 INFO L93 Difference]: Finished difference Result 7535 states and 12772 transitions. [2020-10-15 04:40:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:02,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-15 04:40:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:02,306 INFO L225 Difference]: With dead ends: 7535 [2020-10-15 04:40:02,306 INFO L226 Difference]: Without dead ends: 4044 [2020-10-15 04:40:02,312 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 04:40:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-10-15 04:40:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3072. [2020-10-15 04:40:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2020-10-15 04:40:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 5245 transitions. [2020-10-15 04:40:02,402 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 5245 transitions. Word has length 103 [2020-10-15 04:40:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:02,402 INFO L479 AbstractCegarLoop]: Abstraction has 3072 states and 5245 transitions. [2020-10-15 04:40:02,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 5245 transitions. [2020-10-15 04:40:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 04:40:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:02,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 04:40:02,408 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1191543115, now seen corresponding path program 1 times [2020-10-15 04:40:02,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:02,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455743991] [2020-10-15 04:40:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:03,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:03,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1509 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:40:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:04,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-15 04:40:04,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455743991] [2020-10-15 04:40:04,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:04,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:04,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890633058] [2020-10-15 04:40:04,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:04,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:04,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:04,062 INFO L87 Difference]: Start difference. First operand 3072 states and 5245 transitions. Second operand 5 states. [2020-10-15 04:40:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:04,873 INFO L93 Difference]: Finished difference Result 4021 states and 6825 transitions. [2020-10-15 04:40:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:04,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-15 04:40:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:04,878 INFO L225 Difference]: With dead ends: 4021 [2020-10-15 04:40:04,878 INFO L226 Difference]: Without dead ends: 3090 [2020-10-15 04:40:04,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 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 04:40:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2020-10-15 04:40:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3082. [2020-10-15 04:40:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2020-10-15 04:40:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5257 transitions. [2020-10-15 04:40:04,938 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5257 transitions. Word has length 106 [2020-10-15 04:40:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:04,938 INFO L479 AbstractCegarLoop]: Abstraction has 3082 states and 5257 transitions. [2020-10-15 04:40:04,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5257 transitions. [2020-10-15 04:40:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 04:40:04,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:04,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:04,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 04:40:04,942 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash -963637164, now seen corresponding path program 1 times [2020-10-15 04:40:04,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:04,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489616654] [2020-10-15 04:40:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 04:40:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:40:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:10,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:10,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489616654] [2020-10-15 04:40:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:40:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763708104] [2020-10-15 04:40:10,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:40:10,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:40:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:40:10,411 INFO L87 Difference]: Start difference. First operand 3082 states and 5257 transitions. Second operand 11 states. [2020-10-15 04:40:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:14,525 INFO L93 Difference]: Finished difference Result 7569 states and 12761 transitions. [2020-10-15 04:40:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:40:14,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-10-15 04:40:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:14,533 INFO L225 Difference]: With dead ends: 7569 [2020-10-15 04:40:14,533 INFO L226 Difference]: Without dead ends: 5157 [2020-10-15 04:40:14,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:40:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2020-10-15 04:40:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4794. [2020-10-15 04:40:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4794 states. [2020-10-15 04:40:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 8193 transitions. [2020-10-15 04:40:14,632 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 8193 transitions. Word has length 107 [2020-10-15 04:40:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:14,633 INFO L479 AbstractCegarLoop]: Abstraction has 4794 states and 8193 transitions. [2020-10-15 04:40:14,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:40:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 8193 transitions. [2020-10-15 04:40:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 04:40:14,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:14,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:14,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 04:40:14,639 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:14,639 INFO L82 PathProgramCache]: Analyzing trace with hash -361132590, now seen corresponding path program 2 times [2020-10-15 04:40:14,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:14,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252751668] [2020-10-15 04:40:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:19,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 04:40:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:40:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:20,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:20,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252751668] [2020-10-15 04:40:20,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:20,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:40:20,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884435912] [2020-10-15 04:40:20,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:40:20,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:40:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:40:20,084 INFO L87 Difference]: Start difference. First operand 4794 states and 8193 transitions. Second operand 11 states. [2020-10-15 04:40:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:23,279 INFO L93 Difference]: Finished difference Result 8379 states and 14206 transitions. [2020-10-15 04:40:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:40:23,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-10-15 04:40:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:23,287 INFO L225 Difference]: With dead ends: 8379 [2020-10-15 04:40:23,287 INFO L226 Difference]: Without dead ends: 5790 [2020-10-15 04:40:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:40:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2020-10-15 04:40:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 4914. [2020-10-15 04:40:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4914 states. [2020-10-15 04:40:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 8388 transitions. [2020-10-15 04:40:23,397 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 8388 transitions. Word has length 107 [2020-10-15 04:40:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:23,397 INFO L479 AbstractCegarLoop]: Abstraction has 4914 states and 8388 transitions. [2020-10-15 04:40:23,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:40:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 8388 transitions. [2020-10-15 04:40:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 04:40:23,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:23,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:23,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 04:40:23,404 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:23,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:23,404 INFO L82 PathProgramCache]: Analyzing trace with hash -624017467, now seen corresponding path program 1 times [2020-10-15 04:40:23,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:23,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035105374] [2020-10-15 04:40:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:23,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:24,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:40:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:40:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:24,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:24,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035105374] [2020-10-15 04:40:24,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:24,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:24,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283468630] [2020-10-15 04:40:24,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:24,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:24,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:24,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:24,126 INFO L87 Difference]: Start difference. First operand 4914 states and 8388 transitions. Second operand 5 states. [2020-10-15 04:40:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:25,344 INFO L93 Difference]: Finished difference Result 7330 states and 12244 transitions. [2020-10-15 04:40:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:25,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-15 04:40:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:25,352 INFO L225 Difference]: With dead ends: 7330 [2020-10-15 04:40:25,352 INFO L226 Difference]: Without dead ends: 6399 [2020-10-15 04:40:25,355 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 04:40:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2020-10-15 04:40:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5607. [2020-10-15 04:40:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2020-10-15 04:40:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 9621 transitions. [2020-10-15 04:40:25,469 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 9621 transitions. Word has length 108 [2020-10-15 04:40:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:25,469 INFO L479 AbstractCegarLoop]: Abstraction has 5607 states and 9621 transitions. [2020-10-15 04:40:25,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 9621 transitions. [2020-10-15 04:40:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 04:40:25,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:25,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:25,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 04:40:25,475 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1933430493, now seen corresponding path program 2 times [2020-10-15 04:40:25,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:25,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770234974] [2020-10-15 04:40:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 04:40:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:40:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:40:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:30,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:30,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:30,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:30,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:30,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 04:40:30,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770234974] [2020-10-15 04:40:30,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:30,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:30,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313384622] [2020-10-15 04:40:30,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:30,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:30,607 INFO L87 Difference]: Start difference. First operand 5607 states and 9621 transitions. Second operand 5 states. [2020-10-15 04:40:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:31,799 INFO L93 Difference]: Finished difference Result 16661 states and 28567 transitions. [2020-10-15 04:40:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:31,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 04:40:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:31,813 INFO L225 Difference]: With dead ends: 16661 [2020-10-15 04:40:31,814 INFO L226 Difference]: Without dead ends: 11082 [2020-10-15 04:40:31,821 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 04:40:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2020-10-15 04:40:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 11075. [2020-10-15 04:40:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11075 states. [2020-10-15 04:40:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 18844 transitions. [2020-10-15 04:40:32,064 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 18844 transitions. Word has length 109 [2020-10-15 04:40:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:32,064 INFO L479 AbstractCegarLoop]: Abstraction has 11075 states and 18844 transitions. [2020-10-15 04:40:32,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 18844 transitions. [2020-10-15 04:40:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 04:40:32,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:32,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:32,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 04:40:32,078 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2084488419, now seen corresponding path program 1 times [2020-10-15 04:40:32,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:32,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024574399] [2020-10-15 04:40:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:37,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 04:40:37,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:40:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:40:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:37,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:40:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:40:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:37,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:37,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:37,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:37,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:40:37,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:37,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 04:40:37,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024574399] [2020-10-15 04:40:37,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:37,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:37,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604750284] [2020-10-15 04:40:37,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:37,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:37,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:37,192 INFO L87 Difference]: Start difference. First operand 11075 states and 18844 transitions. Second operand 5 states. [2020-10-15 04:40:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:38,720 INFO L93 Difference]: Finished difference Result 25051 states and 42275 transitions. [2020-10-15 04:40:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:38,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 04:40:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:38,738 INFO L225 Difference]: With dead ends: 25051 [2020-10-15 04:40:38,738 INFO L226 Difference]: Without dead ends: 14037 [2020-10-15 04:40:38,753 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 04:40:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14037 states. [2020-10-15 04:40:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14037 to 8967. [2020-10-15 04:40:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8967 states. [2020-10-15 04:40:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8967 states to 8967 states and 15209 transitions. [2020-10-15 04:40:39,002 INFO L78 Accepts]: Start accepts. Automaton has 8967 states and 15209 transitions. Word has length 109 [2020-10-15 04:40:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:39,002 INFO L479 AbstractCegarLoop]: Abstraction has 8967 states and 15209 transitions. [2020-10-15 04:40:39,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8967 states and 15209 transitions. [2020-10-15 04:40:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 04:40:39,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:39,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:39,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 04:40:39,010 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash -435595661, now seen corresponding path program 1 times [2020-10-15 04:40:39,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:39,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105519041] [2020-10-15 04:40:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:44,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 04:40:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:40:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 04:40:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:44,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:44,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:44,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:44,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:40:44,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105519041] [2020-10-15 04:40:44,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:44,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:40:44,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958895580] [2020-10-15 04:40:44,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:40:44,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:40:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:40:44,266 INFO L87 Difference]: Start difference. First operand 8967 states and 15209 transitions. Second operand 9 states. [2020-10-15 04:40:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:46,810 INFO L93 Difference]: Finished difference Result 15182 states and 25482 transitions. [2020-10-15 04:40:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:40:46,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-15 04:40:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:46,823 INFO L225 Difference]: With dead ends: 15182 [2020-10-15 04:40:46,823 INFO L226 Difference]: Without dead ends: 10009 [2020-10-15 04:40:46,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:40:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2020-10-15 04:40:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 6489. [2020-10-15 04:40:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6489 states. [2020-10-15 04:40:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10973 transitions. [2020-10-15 04:40:47,118 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10973 transitions. Word has length 109 [2020-10-15 04:40:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:47,118 INFO L479 AbstractCegarLoop]: Abstraction has 6489 states and 10973 transitions. [2020-10-15 04:40:47,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:40:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10973 transitions. [2020-10-15 04:40:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 04:40:47,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:47,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:47,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 04:40:47,123 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1152270863, now seen corresponding path program 1 times [2020-10-15 04:40:47,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:47,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123883818] [2020-10-15 04:40:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 04:40:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-15 04:40:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:47,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 04:40:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:40:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:47,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:40:47,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123883818] [2020-10-15 04:40:47,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:47,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:47,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184872180] [2020-10-15 04:40:47,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:47,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:47,829 INFO L87 Difference]: Start difference. First operand 6489 states and 10973 transitions. Second operand 5 states. [2020-10-15 04:40:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:49,185 INFO L93 Difference]: Finished difference Result 8760 states and 14703 transitions. [2020-10-15 04:40:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:49,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 04:40:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:49,194 INFO L225 Difference]: With dead ends: 8760 [2020-10-15 04:40:49,194 INFO L226 Difference]: Without dead ends: 7113 [2020-10-15 04:40:49,199 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 04:40:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2020-10-15 04:40:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6720. [2020-10-15 04:40:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6720 states. [2020-10-15 04:40:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11390 transitions. [2020-10-15 04:40:49,357 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 11390 transitions. Word has length 109 [2020-10-15 04:40:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:49,357 INFO L479 AbstractCegarLoop]: Abstraction has 6720 states and 11390 transitions. [2020-10-15 04:40:49,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 11390 transitions. [2020-10-15 04:40:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 04:40:49,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:49,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:49,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 04:40:49,363 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:49,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash -331302669, now seen corresponding path program 1 times [2020-10-15 04:40:49,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:49,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149390020] [2020-10-15 04:40:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:50,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 04:40:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:40:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:50,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:50,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:40:50,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:50,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:50,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:40:50,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149390020] [2020-10-15 04:40:50,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:50,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:50,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960857196] [2020-10-15 04:40:50,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:50,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:50,095 INFO L87 Difference]: Start difference. First operand 6720 states and 11390 transitions. Second operand 5 states. [2020-10-15 04:40:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:51,496 INFO L93 Difference]: Finished difference Result 8893 states and 14945 transitions. [2020-10-15 04:40:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:51,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-15 04:40:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:51,505 INFO L225 Difference]: With dead ends: 8893 [2020-10-15 04:40:51,506 INFO L226 Difference]: Without dead ends: 7092 [2020-10-15 04:40:51,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:40:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2020-10-15 04:40:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 6489. [2020-10-15 04:40:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6489 states. [2020-10-15 04:40:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10973 transitions. [2020-10-15 04:40:51,731 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10973 transitions. Word has length 110 [2020-10-15 04:40:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:51,732 INFO L479 AbstractCegarLoop]: Abstraction has 6489 states and 10973 transitions. [2020-10-15 04:40:51,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10973 transitions. [2020-10-15 04:40:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:40:51,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:51,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:51,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 04:40:51,737 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:51,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1813334408, now seen corresponding path program 1 times [2020-10-15 04:40:51,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:51,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251746473] [2020-10-15 04:40:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:40:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:40:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:56,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 04:40:56,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251746473] [2020-10-15 04:40:56,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:56,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:40:56,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611257498] [2020-10-15 04:40:56,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:40:56,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:56,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:40:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:40:56,963 INFO L87 Difference]: Start difference. First operand 6489 states and 10973 transitions. Second operand 9 states. [2020-10-15 04:41:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:00,004 INFO L93 Difference]: Finished difference Result 13653 states and 22925 transitions. [2020-10-15 04:41:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:41:00,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-10-15 04:41:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:00,016 INFO L225 Difference]: With dead ends: 13653 [2020-10-15 04:41:00,016 INFO L226 Difference]: Without dead ends: 8675 [2020-10-15 04:41:00,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:41:00,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8675 states. [2020-10-15 04:41:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8675 to 5142. [2020-10-15 04:41:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2020-10-15 04:41:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 8659 transitions. [2020-10-15 04:41:00,178 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 8659 transitions. Word has length 113 [2020-10-15 04:41:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:00,178 INFO L479 AbstractCegarLoop]: Abstraction has 5142 states and 8659 transitions. [2020-10-15 04:41:00,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:41:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 8659 transitions. [2020-10-15 04:41:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 04:41:00,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:00,182 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-15 04:41:00,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 04:41:00,182 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:00,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1413298368, now seen corresponding path program 1 times [2020-10-15 04:41:00,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:00,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804851516] [2020-10-15 04:41:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:00,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking...