/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:00:57,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:00:57,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:00:57,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:00:57,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:00:57,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:00:57,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:00:57,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:00:57,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:00:57,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:00:57,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:00:57,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:00:57,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:00:57,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:00:57,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:00:57,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:00:57,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:00:57,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:00:57,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:00:57,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:00:57,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:00:57,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:00:57,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:00:57,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:00:57,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:00:57,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:00:57,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:00:57,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:00:57,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:00:57,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:00:57,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:00:57,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:00:57,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:00:57,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:00:57,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:00:57,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:00:57,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:00:57,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:00:57,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:00:57,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:00:57,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:00:57,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:00:57,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:00:57,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:00:57,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:00:57,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:00:57,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:00:57,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:00:57,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:00:57,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:00:57,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:00:57,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:00:57,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:00:57,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:00:57,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:00:57,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:00:57,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:00:57,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:00:57,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:00:57,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:00:57,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:00:57,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:00:57,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:00:57,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:00:57,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:00:57,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:00:57,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:00:57,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:00:57,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:00:57,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:00:57,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:00:57,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:00:57,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:00:57,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:00:57,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:00:57,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:00:57,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:00:57,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-14 10:00:57,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5da1e488d/8e3b9b636a7d43d9b1066c4c17c9f2b8/FLAG191e946ba [2020-10-14 10:00:58,319 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:00:58,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-14 10:00:58,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5da1e488d/8e3b9b636a7d43d9b1066c4c17c9f2b8/FLAG191e946ba [2020-10-14 10:00:58,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5da1e488d/8e3b9b636a7d43d9b1066c4c17c9f2b8 [2020-10-14 10:00:58,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:00:58,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:00:58,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:58,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:00:58,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:00:58,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:58" (1/1) ... [2020-10-14 10:00:58,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1333f6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:58, skipping insertion in model container [2020-10-14 10:00:58,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:58" (1/1) ... [2020-10-14 10:00:58,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:00:58,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:00:59,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:59,195 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:00:59,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:59,327 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:00:59,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59 WrapperNode [2020-10-14 10:00:59,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:59,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:00:59,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:00:59,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:00:59,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... [2020-10-14 10:00:59,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:00:59,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:00:59,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:00:59,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:00:59,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:00:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:00:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:00:59,567 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:00:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:00:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:00:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:00:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:00:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:00:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:00:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:00:59,570 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:00:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:00:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:00:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:00:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:00:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:00:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:00:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:00:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:00:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:00:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:00:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:00:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:00:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:00:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:00:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:00:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:00:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:00:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:00:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:00:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:00:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:01:00,170 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:01:00,853 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:01:00,853 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:01:00,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:01:00,876 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:01:00,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:00 BoogieIcfgContainer [2020-10-14 10:01:00,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:01:00,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:01:00,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:01:00,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:01:00,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:58" (1/3) ... [2020-10-14 10:01:00,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3448f819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:00, skipping insertion in model container [2020-10-14 10:01:00,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:59" (2/3) ... [2020-10-14 10:01:00,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3448f819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:00, skipping insertion in model container [2020-10-14 10:01:00,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:00" (3/3) ... [2020-10-14 10:01:00,889 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2020-10-14 10:01:00,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:01:00,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:01:00,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:01:00,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:01:00,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:01:00,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:01:00,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:01:00,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:01:00,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:01:00,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:01:00,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:01:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:01:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:01:00,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:00,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:00,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:00,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-14 10:01:00,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:00,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450232417] [2020-10-14 10:01:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:02,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:01:02,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-14 10:01:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:02,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:01:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:01:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 10:01:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:02,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:01:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:02,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:01:02,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450232417] [2020-10-14 10:01:02,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:02,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:02,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471271199] [2020-10-14 10:01:02,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:02,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:02,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:02,741 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:01:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:03,510 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:01:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:03,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:01:03,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:03,527 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:01:03,527 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:01:03,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:01:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:01:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:01:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:01:03,597 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:01:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:03,598 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:01:03,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:01:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:01:03,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:03,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:03,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:01:03,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-14 10:01:03,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:03,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075242321] [2020-10-14 10:01:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:04,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:04,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:01:04,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-10-14 10:01:04,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:04,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:01:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:01:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:04,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:04,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:01:04,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075242321] [2020-10-14 10:01:04,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:04,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:04,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793016142] [2020-10-14 10:01:04,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:04,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:04,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:04,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:04,774 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:01:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:05,283 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:01:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:05,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:01:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:05,287 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:01:05,287 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:01:05,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:01:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:01:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:01:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:01:05,314 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:01:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:05,314 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:01:05,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:01:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:01:05,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:05,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:05,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:01:05,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:05,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-14 10:01:05,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:05,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789856808] [2020-10-14 10:01:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:05,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:01:05,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:01:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-14 10:01:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:05,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:01:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:01:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:01:05,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789856808] [2020-10-14 10:01:05,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:05,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:05,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613980923] [2020-10-14 10:01:05,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:05,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:05,958 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:01:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:06,435 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:01:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:06,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:01:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:06,441 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:01:06,441 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:01:06,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:06,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:01:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:01:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:01:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:01:06,467 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:01:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:06,468 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:01:06,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:01:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:01:06,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:06,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:06,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:01:06,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 322420460, now seen corresponding path program 1 times [2020-10-14 10:01:06,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:06,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911778914] [2020-10-14 10:01:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:09,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:01:09,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-10-14 10:01:09,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:09,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:01:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:01:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:09,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:01:09,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911778914] [2020-10-14 10:01:09,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:09,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:09,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326335829] [2020-10-14 10:01:09,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:09,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:09,394 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:01:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:09,904 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:01:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:09,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:01:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:09,909 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:01:09,909 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:01:09,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:01:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:01:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:01:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:01:09,932 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:01:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:09,933 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:01:09,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:01:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:01:09,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:09,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:09,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:01:09,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash 578068042, now seen corresponding path program 1 times [2020-10-14 10:01:09,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:09,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634436747] [2020-10-14 10:01:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:12,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:12,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:01:12,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2664 [2020-10-14 10:01:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:12,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:01:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:12,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:12,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:01:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:12,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:01:12,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634436747] [2020-10-14 10:01:12,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:12,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:12,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550137979] [2020-10-14 10:01:12,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:12,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:12,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:12,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:12,746 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:01:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:13,566 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:01:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:13,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 10:01:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:13,573 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:01:13,573 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:01:13,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:01:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:01:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:01:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:01:13,609 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 110 [2020-10-14 10:01:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:13,612 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:01:13,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:01:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 10:01:13,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:13,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:13,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:01:13,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:13,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1771988853, now seen corresponding path program 1 times [2020-10-14 10:01:13,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:13,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628489548] [2020-10-14 10:01:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:14,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 10:01:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:01:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 10:01:14,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:14,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:01:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:14,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:01:14,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628489548] [2020-10-14 10:01:14,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:14,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:14,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400574559] [2020-10-14 10:01:14,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:14,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:14,282 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:01:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:14,737 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:01:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:14,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 10:01:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:14,745 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:01:14,746 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:01:14,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:01:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:01:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:01:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:01:14,775 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 127 [2020-10-14 10:01:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:14,776 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:01:14,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:01:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:01:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:14,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:14,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:01:14,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:14,780 INFO L82 PathProgramCache]: Analyzing trace with hash -443568933, now seen corresponding path program 1 times [2020-10-14 10:01:14,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:14,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234504379] [2020-10-14 10:01:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:01:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:01:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-14 10:01:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:15,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:01:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:01:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:01:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:15,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:15,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:15,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:01:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:15,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:01:15,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234504379] [2020-10-14 10:01:15,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:15,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:01:15,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23676360] [2020-10-14 10:01:15,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:01:15,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:15,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:01:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:15,804 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-14 10:01:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:16,307 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-14 10:01:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:01:16,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 10:01:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:16,313 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:01:16,314 INFO L226 Difference]: Without dead ends: 1018 [2020-10-14 10:01:16,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:01:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-14 10:01:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-14 10:01:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 10:01:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-14 10:01:16,345 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-14 10:01:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:16,346 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-14 10:01:16,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:01:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-14 10:01:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:01:16,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:16,352 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:01:16,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1212581923, now seen corresponding path program 1 times [2020-10-14 10:01:16,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:16,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230560340] [2020-10-14 10:01:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:21,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:01:21,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:01:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:01:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:21,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 10:01:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:01:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 10:01:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:01:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:01:22,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230560340] [2020-10-14 10:01:22,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:01:22,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:01:22,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560495224] [2020-10-14 10:01:22,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:01:22,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:22,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:01:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:01:22,165 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 11 states. [2020-10-14 10:01:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:25,571 INFO L93 Difference]: Finished difference Result 6116 states and 9238 transitions. [2020-10-14 10:01:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 10:01:25,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-10-14 10:01:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:25,597 INFO L225 Difference]: With dead ends: 6116 [2020-10-14 10:01:25,598 INFO L226 Difference]: Without dead ends: 5114 [2020-10-14 10:01:25,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:01:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2020-10-14 10:01:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 2560. [2020-10-14 10:01:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2560 states. [2020-10-14 10:01:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4078 transitions. [2020-10-14 10:01:25,710 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4078 transitions. Word has length 170 [2020-10-14 10:01:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:25,711 INFO L479 AbstractCegarLoop]: Abstraction has 2560 states and 4078 transitions. [2020-10-14 10:01:25,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:01:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4078 transitions. [2020-10-14 10:01:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:01:25,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:25,717 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:25,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:01:25,717 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1057658723, now seen corresponding path program 1 times [2020-10-14 10:01:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:25,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536578181] [2020-10-14 10:01:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:01:30,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4353 [2020-10-14 10:01:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:01:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 10:01:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:01:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:30,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:30,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:01:30,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536578181] [2020-10-14 10:01:30,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:30,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:01:30,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215077335] [2020-10-14 10:01:30,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:01:30,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:30,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:01:30,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:30,304 INFO L87 Difference]: Start difference. First operand 2560 states and 4078 transitions. Second operand 6 states. [2020-10-14 10:01:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:32,183 INFO L93 Difference]: Finished difference Result 8420 states and 13358 transitions. [2020-10-14 10:01:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:01:32,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:01:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:32,213 INFO L225 Difference]: With dead ends: 8420 [2020-10-14 10:01:32,213 INFO L226 Difference]: Without dead ends: 5874 [2020-10-14 10:01:32,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:01:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2020-10-14 10:01:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 3832. [2020-10-14 10:01:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3832 states. [2020-10-14 10:01:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 6422 transitions. [2020-10-14 10:01:32,387 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 6422 transitions. Word has length 171 [2020-10-14 10:01:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:32,388 INFO L479 AbstractCegarLoop]: Abstraction has 3832 states and 6422 transitions. [2020-10-14 10:01:32,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:01:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 6422 transitions. [2020-10-14 10:01:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:01:32,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:32,400 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:32,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:01:32,400 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:32,401 INFO L82 PathProgramCache]: Analyzing trace with hash -314148575, now seen corresponding path program 1 times [2020-10-14 10:01:32,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:32,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211827810] [2020-10-14 10:01:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:36,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4308 [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:01:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 10:01:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:01:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:36,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:36,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:01:36,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211827810] [2020-10-14 10:01:36,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:36,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:01:36,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657372925] [2020-10-14 10:01:36,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:01:36,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:01:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:36,924 INFO L87 Difference]: Start difference. First operand 3832 states and 6422 transitions. Second operand 6 states. [2020-10-14 10:01:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:38,282 INFO L93 Difference]: Finished difference Result 10282 states and 16787 transitions. [2020-10-14 10:01:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:01:38,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:01:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:38,329 INFO L225 Difference]: With dead ends: 10282 [2020-10-14 10:01:38,329 INFO L226 Difference]: Without dead ends: 6464 [2020-10-14 10:01:38,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:01:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2020-10-14 10:01:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 3840. [2020-10-14 10:01:38,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3840 states. [2020-10-14 10:01:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3840 states to 3840 states and 6430 transitions. [2020-10-14 10:01:38,497 INFO L78 Accepts]: Start accepts. Automaton has 3840 states and 6430 transitions. Word has length 171 [2020-10-14 10:01:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:38,497 INFO L479 AbstractCegarLoop]: Abstraction has 3840 states and 6430 transitions. [2020-10-14 10:01:38,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:01:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3840 states and 6430 transitions. [2020-10-14 10:01:38,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 10:01:38,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:38,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:38,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:01:38,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:38,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:38,511 INFO L82 PathProgramCache]: Analyzing trace with hash -268440010, now seen corresponding path program 1 times [2020-10-14 10:01:38,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:38,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127539131] [2020-10-14 10:01:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4760 [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:43,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:01:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:01:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:01:43,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127539131] [2020-10-14 10:01:43,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:43,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:43,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938796589] [2020-10-14 10:01:43,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:43,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:43,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:43,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:43,421 INFO L87 Difference]: Start difference. First operand 3840 states and 6430 transitions. Second operand 5 states. [2020-10-14 10:01:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:44,512 INFO L93 Difference]: Finished difference Result 9196 states and 15194 transitions. [2020-10-14 10:01:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:44,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-14 10:01:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:44,537 INFO L225 Difference]: With dead ends: 9196 [2020-10-14 10:01:44,537 INFO L226 Difference]: Without dead ends: 5370 [2020-10-14 10:01:44,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2020-10-14 10:01:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 4496. [2020-10-14 10:01:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4496 states. [2020-10-14 10:01:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 7630 transitions. [2020-10-14 10:01:44,697 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 7630 transitions. Word has length 176 [2020-10-14 10:01:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:44,697 INFO L479 AbstractCegarLoop]: Abstraction has 4496 states and 7630 transitions. [2020-10-14 10:01:44,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 7630 transitions. [2020-10-14 10:01:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 10:01:44,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:44,707 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:44,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:01:44,708 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1080621368, now seen corresponding path program 1 times [2020-10-14 10:01:44,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:44,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833255102] [2020-10-14 10:01:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3804 [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:01:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:01:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:48,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:48,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:48,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:01:48,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833255102] [2020-10-14 10:01:48,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:48,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:48,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232907431] [2020-10-14 10:01:48,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:48,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:48,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:48,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:48,632 INFO L87 Difference]: Start difference. First operand 4496 states and 7630 transitions. Second operand 5 states. [2020-10-14 10:01:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:49,631 INFO L93 Difference]: Finished difference Result 9836 states and 16362 transitions. [2020-10-14 10:01:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-14 10:01:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:49,647 INFO L225 Difference]: With dead ends: 9836 [2020-10-14 10:01:49,647 INFO L226 Difference]: Without dead ends: 5354 [2020-10-14 10:01:49,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2020-10-14 10:01:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 4512. [2020-10-14 10:01:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4512 states. [2020-10-14 10:01:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 7646 transitions. [2020-10-14 10:01:49,820 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 7646 transitions. Word has length 177 [2020-10-14 10:01:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:49,820 INFO L479 AbstractCegarLoop]: Abstraction has 4512 states and 7646 transitions. [2020-10-14 10:01:49,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 7646 transitions. [2020-10-14 10:01:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:01:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:49,835 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:49,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:01:49,836 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash -247227359, now seen corresponding path program 1 times [2020-10-14 10:01:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:49,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697715336] [2020-10-14 10:01:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:54,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:54,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:01:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:01:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-14 10:01:54,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697715336] [2020-10-14 10:01:54,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:54,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:54,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770912565] [2020-10-14 10:01:54,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:54,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:54,934 INFO L87 Difference]: Start difference. First operand 4512 states and 7646 transitions. Second operand 5 states. [2020-10-14 10:01:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:55,889 INFO L93 Difference]: Finished difference Result 7620 states and 12753 transitions. [2020-10-14 10:01:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:55,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:01:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:55,901 INFO L225 Difference]: With dead ends: 7620 [2020-10-14 10:01:55,901 INFO L226 Difference]: Without dead ends: 5322 [2020-10-14 10:01:55,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2020-10-14 10:01:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 4664. [2020-10-14 10:01:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-10-14 10:01:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 7902 transitions. [2020-10-14 10:01:56,021 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 7902 transitions. Word has length 184 [2020-10-14 10:01:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:56,022 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 7902 transitions. [2020-10-14 10:01:56,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 7902 transitions. [2020-10-14 10:01:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:01:56,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:56,033 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:56,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:01:56,033 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:56,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2094248743, now seen corresponding path program 2 times [2020-10-14 10:01:56,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:56,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779883783] [2020-10-14 10:01:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:01,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:01,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:02:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:01,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:01,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:02:01,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779883783] [2020-10-14 10:02:01,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:01,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:01,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563116443] [2020-10-14 10:02:01,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:01,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:01,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:01,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:01,208 INFO L87 Difference]: Start difference. First operand 4664 states and 7902 transitions. Second operand 5 states. [2020-10-14 10:02:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:01,944 INFO L93 Difference]: Finished difference Result 13881 states and 23503 transitions. [2020-10-14 10:02:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:01,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:01,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:01,964 INFO L225 Difference]: With dead ends: 13881 [2020-10-14 10:02:01,965 INFO L226 Difference]: Without dead ends: 9231 [2020-10-14 10:02:01,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9231 states. [2020-10-14 10:02:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 9229. [2020-10-14 10:02:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9229 states. [2020-10-14 10:02:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9229 states to 9229 states and 15521 transitions. [2020-10-14 10:02:02,254 INFO L78 Accepts]: Start accepts. Automaton has 9229 states and 15521 transitions. Word has length 184 [2020-10-14 10:02:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:02,254 INFO L479 AbstractCegarLoop]: Abstraction has 9229 states and 15521 transitions. [2020-10-14 10:02:02,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9229 states and 15521 transitions. [2020-10-14 10:02:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:02,271 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:02,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:02:02,272 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:02,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1814856151, now seen corresponding path program 1 times [2020-10-14 10:02:02,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:02,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699124114] [2020-10-14 10:02:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:07,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:07,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:02:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:02:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:02:07,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699124114] [2020-10-14 10:02:07,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:07,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:07,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965902498] [2020-10-14 10:02:07,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:07,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:07,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:07,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:07,398 INFO L87 Difference]: Start difference. First operand 9229 states and 15521 transitions. Second operand 5 states. [2020-10-14 10:02:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:08,445 INFO L93 Difference]: Finished difference Result 15393 states and 25557 transitions. [2020-10-14 10:02:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:08,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:08,466 INFO L225 Difference]: With dead ends: 15393 [2020-10-14 10:02:08,466 INFO L226 Difference]: Without dead ends: 10543 [2020-10-14 10:02:08,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2020-10-14 10:02:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 9277. [2020-10-14 10:02:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9277 states. [2020-10-14 10:02:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 15601 transitions. [2020-10-14 10:02:08,711 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 15601 transitions. Word has length 184 [2020-10-14 10:02:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:08,712 INFO L479 AbstractCegarLoop]: Abstraction has 9277 states and 15601 transitions. [2020-10-14 10:02:08,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 15601 transitions. [2020-10-14 10:02:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:08,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:08,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:08,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:02:08,731 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash -973535081, now seen corresponding path program 2 times [2020-10-14 10:02:08,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:08,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579853676] [2020-10-14 10:02:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:13,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:13,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4486 [2020-10-14 10:02:13,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:13,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 10:02:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:02:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:13,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:02:13,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579853676] [2020-10-14 10:02:13,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:13,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:13,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775053324] [2020-10-14 10:02:13,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:13,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:13,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:13,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:13,336 INFO L87 Difference]: Start difference. First operand 9277 states and 15601 transitions. Second operand 5 states. [2020-10-14 10:02:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:14,376 INFO L93 Difference]: Finished difference Result 15441 states and 25621 transitions. [2020-10-14 10:02:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:14,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:14,392 INFO L225 Difference]: With dead ends: 15441 [2020-10-14 10:02:14,392 INFO L226 Difference]: Without dead ends: 10543 [2020-10-14 10:02:14,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2020-10-14 10:02:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 9581. [2020-10-14 10:02:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9581 states. [2020-10-14 10:02:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9581 states to 9581 states and 16177 transitions. [2020-10-14 10:02:14,659 INFO L78 Accepts]: Start accepts. Automaton has 9581 states and 16177 transitions. Word has length 184 [2020-10-14 10:02:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:14,660 INFO L479 AbstractCegarLoop]: Abstraction has 9581 states and 16177 transitions. [2020-10-14 10:02:14,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9581 states and 16177 transitions. [2020-10-14 10:02:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:14,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:14,680 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:14,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:02:14,680 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2127446045, now seen corresponding path program 3 times [2020-10-14 10:02:14,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:14,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415988910] [2020-10-14 10:02:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:19,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4896 [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:02:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:19,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:19,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:19,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:19,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:19,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:02:19,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415988910] [2020-10-14 10:02:19,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:19,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:19,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105183083] [2020-10-14 10:02:19,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:19,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:19,695 INFO L87 Difference]: Start difference. First operand 9581 states and 16177 transitions. Second operand 5 states. [2020-10-14 10:02:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:20,707 INFO L93 Difference]: Finished difference Result 15745 states and 26181 transitions. [2020-10-14 10:02:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:20,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:20,717 INFO L225 Difference]: With dead ends: 15745 [2020-10-14 10:02:20,717 INFO L226 Difference]: Without dead ends: 10543 [2020-10-14 10:02:20,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2020-10-14 10:02:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 9613. [2020-10-14 10:02:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9613 states. [2020-10-14 10:02:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9613 states to 9613 states and 16225 transitions. [2020-10-14 10:02:20,999 INFO L78 Accepts]: Start accepts. Automaton has 9613 states and 16225 transitions. Word has length 184 [2020-10-14 10:02:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:20,999 INFO L479 AbstractCegarLoop]: Abstraction has 9613 states and 16225 transitions. [2020-10-14 10:02:20,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9613 states and 16225 transitions. [2020-10-14 10:02:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:21,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:21,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:02:21,014 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash 896959113, now seen corresponding path program 1 times [2020-10-14 10:02:21,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:21,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307961476] [2020-10-14 10:02:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:02:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:24,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:24,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-14 10:02:24,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307961476] [2020-10-14 10:02:24,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:24,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:24,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541272639] [2020-10-14 10:02:24,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:24,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:24,900 INFO L87 Difference]: Start difference. First operand 9613 states and 16225 transitions. Second operand 5 states. [2020-10-14 10:02:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:25,923 INFO L93 Difference]: Finished difference Result 15777 states and 26213 transitions. [2020-10-14 10:02:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:25,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:25,934 INFO L225 Difference]: With dead ends: 15777 [2020-10-14 10:02:25,934 INFO L226 Difference]: Without dead ends: 10543 [2020-10-14 10:02:25,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2020-10-14 10:02:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 9613. [2020-10-14 10:02:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9613 states. [2020-10-14 10:02:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9613 states to 9613 states and 16209 transitions. [2020-10-14 10:02:26,180 INFO L78 Accepts]: Start accepts. Automaton has 9613 states and 16209 transitions. Word has length 185 [2020-10-14 10:02:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:26,180 INFO L479 AbstractCegarLoop]: Abstraction has 9613 states and 16209 transitions. [2020-10-14 10:02:26,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9613 states and 16209 transitions. [2020-10-14 10:02:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:26,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:26,196 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:26,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:02:26,196 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:26,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1354527412, now seen corresponding path program 1 times [2020-10-14 10:02:26,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:26,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128913002] [2020-10-14 10:02:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:31,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:31,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 10:02:31,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:31,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:02:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:02:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:31,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:02:31,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128913002] [2020-10-14 10:02:31,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:31,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:31,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015328246] [2020-10-14 10:02:31,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:31,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:31,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:31,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:31,360 INFO L87 Difference]: Start difference. First operand 9613 states and 16209 transitions. Second operand 5 states. [2020-10-14 10:02:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:32,211 INFO L93 Difference]: Finished difference Result 15033 states and 25285 transitions. [2020-10-14 10:02:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:32,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:32,224 INFO L225 Difference]: With dead ends: 15033 [2020-10-14 10:02:32,224 INFO L226 Difference]: Without dead ends: 9799 [2020-10-14 10:02:32,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2020-10-14 10:02:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 9619. [2020-10-14 10:02:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9619 states. [2020-10-14 10:02:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9619 states to 9619 states and 16215 transitions. [2020-10-14 10:02:32,424 INFO L78 Accepts]: Start accepts. Automaton has 9619 states and 16215 transitions. Word has length 185 [2020-10-14 10:02:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:32,424 INFO L479 AbstractCegarLoop]: Abstraction has 9619 states and 16215 transitions. [2020-10-14 10:02:32,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 9619 states and 16215 transitions. [2020-10-14 10:02:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:32,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:32,435 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:32,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:02:32,435 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 786239048, now seen corresponding path program 1 times [2020-10-14 10:02:32,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:32,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741840612] [2020-10-14 10:02:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:02:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:02:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:37,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:02:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741840612] [2020-10-14 10:02:37,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:37,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:37,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411096047] [2020-10-14 10:02:37,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:37,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:37,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:37,582 INFO L87 Difference]: Start difference. First operand 9619 states and 16215 transitions. Second operand 5 states. [2020-10-14 10:02:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:38,420 INFO L93 Difference]: Finished difference Result 15033 states and 25283 transitions. [2020-10-14 10:02:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:38,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:38,429 INFO L225 Difference]: With dead ends: 15033 [2020-10-14 10:02:38,430 INFO L226 Difference]: Without dead ends: 9799 [2020-10-14 10:02:38,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2020-10-14 10:02:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 9621. [2020-10-14 10:02:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9621 states. [2020-10-14 10:02:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 16217 transitions. [2020-10-14 10:02:38,620 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 16217 transitions. Word has length 185 [2020-10-14 10:02:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:38,620 INFO L479 AbstractCegarLoop]: Abstraction has 9621 states and 16217 transitions. [2020-10-14 10:02:38,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 16217 transitions. [2020-10-14 10:02:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:38,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:38,627 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:38,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:02:38,628 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1415899816, now seen corresponding path program 1 times [2020-10-14 10:02:38,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:38,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375128145] [2020-10-14 10:02:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:02:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:02:43,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375128145] [2020-10-14 10:02:43,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:43,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:43,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829595841] [2020-10-14 10:02:43,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:43,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:43,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:43,724 INFO L87 Difference]: Start difference. First operand 9621 states and 16217 transitions. Second operand 5 states. [2020-10-14 10:02:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:44,712 INFO L93 Difference]: Finished difference Result 15721 states and 26101 transitions. [2020-10-14 10:02:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:44,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:44,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:44,723 INFO L225 Difference]: With dead ends: 15721 [2020-10-14 10:02:44,724 INFO L226 Difference]: Without dead ends: 10487 [2020-10-14 10:02:44,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2020-10-14 10:02:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 9621. [2020-10-14 10:02:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9621 states. [2020-10-14 10:02:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 16201 transitions. [2020-10-14 10:02:44,906 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 16201 transitions. Word has length 185 [2020-10-14 10:02:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:44,906 INFO L479 AbstractCegarLoop]: Abstraction has 9621 states and 16201 transitions. [2020-10-14 10:02:44,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 16201 transitions. [2020-10-14 10:02:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:44,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:44,914 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:44,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:02:44,914 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:44,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1785079080, now seen corresponding path program 2 times [2020-10-14 10:02:44,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:44,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244468483] [2020-10-14 10:02:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:49,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:49,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:02:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:50,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:02:50,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244468483] [2020-10-14 10:02:50,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:50,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:50,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986851318] [2020-10-14 10:02:50,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:50,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:50,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:50,068 INFO L87 Difference]: Start difference. First operand 9621 states and 16201 transitions. Second operand 5 states. [2020-10-14 10:02:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:50,966 INFO L93 Difference]: Finished difference Result 22737 states and 37761 transitions. [2020-10-14 10:02:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:50,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:50,983 INFO L225 Difference]: With dead ends: 22737 [2020-10-14 10:02:50,983 INFO L226 Difference]: Without dead ends: 13143 [2020-10-14 10:02:50,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13143 states. [2020-10-14 10:02:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13143 to 10345. [2020-10-14 10:02:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10345 states. [2020-10-14 10:02:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10345 states to 10345 states and 17407 transitions. [2020-10-14 10:02:51,181 INFO L78 Accepts]: Start accepts. Automaton has 10345 states and 17407 transitions. Word has length 185 [2020-10-14 10:02:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:51,181 INFO L479 AbstractCegarLoop]: Abstraction has 10345 states and 17407 transitions. [2020-10-14 10:02:51,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 10345 states and 17407 transitions. [2020-10-14 10:02:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:51,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:51,189 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:51,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:02:51,190 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1595894473, now seen corresponding path program 1 times [2020-10-14 10:02:51,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:51,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206123560] [2020-10-14 10:02:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:55,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:55,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4733 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:02:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:02:56,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206123560] [2020-10-14 10:02:56,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:56,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:56,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016539035] [2020-10-14 10:02:56,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:56,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:56,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:56,029 INFO L87 Difference]: Start difference. First operand 10345 states and 17407 transitions. Second operand 5 states. [2020-10-14 10:02:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:57,034 INFO L93 Difference]: Finished difference Result 16773 states and 27827 transitions. [2020-10-14 10:02:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:57,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:57,048 INFO L225 Difference]: With dead ends: 16773 [2020-10-14 10:02:57,048 INFO L226 Difference]: Without dead ends: 11195 [2020-10-14 10:02:57,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:02:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11195 states. [2020-10-14 10:02:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11195 to 10345. [2020-10-14 10:02:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10345 states. [2020-10-14 10:02:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10345 states to 10345 states and 17391 transitions. [2020-10-14 10:02:57,235 INFO L78 Accepts]: Start accepts. Automaton has 10345 states and 17391 transitions. Word has length 185 [2020-10-14 10:02:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:57,236 INFO L479 AbstractCegarLoop]: Abstraction has 10345 states and 17391 transitions. [2020-10-14 10:02:57,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10345 states and 17391 transitions. [2020-10-14 10:02:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:57,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:57,245 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:57,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:02:57,246 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash -702776354, now seen corresponding path program 3 times [2020-10-14 10:02:57,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:57,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581562025] [2020-10-14 10:02:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:02,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 10:03:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:03:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:02,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:02,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:03:02,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581562025] [2020-10-14 10:03:02,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:02,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:02,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884741030] [2020-10-14 10:03:02,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:02,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:02,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:02,399 INFO L87 Difference]: Start difference. First operand 10345 states and 17391 transitions. Second operand 5 states. [2020-10-14 10:03:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:03,331 INFO L93 Difference]: Finished difference Result 24165 states and 40081 transitions. [2020-10-14 10:03:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:03,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:03:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:03,345 INFO L225 Difference]: With dead ends: 24165 [2020-10-14 10:03:03,345 INFO L226 Difference]: Without dead ends: 13867 [2020-10-14 10:03:03,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13867 states. [2020-10-14 10:03:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13867 to 11673. [2020-10-14 10:03:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11673 states. [2020-10-14 10:03:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11673 states to 11673 states and 19775 transitions. [2020-10-14 10:03:03,548 INFO L78 Accepts]: Start accepts. Automaton has 11673 states and 19775 transitions. Word has length 185 [2020-10-14 10:03:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:03,548 INFO L479 AbstractCegarLoop]: Abstraction has 11673 states and 19775 transitions. [2020-10-14 10:03:03,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11673 states and 19775 transitions. [2020-10-14 10:03:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:03:03,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:03,557 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:03,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:03:03,558 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:03,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2043497665, now seen corresponding path program 1 times [2020-10-14 10:03:03,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:03,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460216749] [2020-10-14 10:03:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4973 [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:03:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:08,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:08,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:08,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:03:08,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460216749] [2020-10-14 10:03:08,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:08,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:08,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724550345] [2020-10-14 10:03:08,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:08,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:08,636 INFO L87 Difference]: Start difference. First operand 11673 states and 19775 transitions. Second operand 5 states. [2020-10-14 10:03:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:09,670 INFO L93 Difference]: Finished difference Result 18717 states and 31319 transitions. [2020-10-14 10:03:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:09,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:03:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:09,683 INFO L225 Difference]: With dead ends: 18717 [2020-10-14 10:03:09,684 INFO L226 Difference]: Without dead ends: 12411 [2020-10-14 10:03:09,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12411 states. [2020-10-14 10:03:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12411 to 11625. [2020-10-14 10:03:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11625 states. [2020-10-14 10:03:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 19711 transitions. [2020-10-14 10:03:09,882 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 19711 transitions. Word has length 185 [2020-10-14 10:03:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:09,883 INFO L479 AbstractCegarLoop]: Abstraction has 11625 states and 19711 transitions. [2020-10-14 10:03:09,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 19711 transitions. [2020-10-14 10:03:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:03:09,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:09,892 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:09,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:03:09,892 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 524841836, now seen corresponding path program 4 times [2020-10-14 10:03:09,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:09,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739495601] [2020-10-14 10:03:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:14,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:14,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:14,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:14,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:14,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:03:15,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739495601] [2020-10-14 10:03:15,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:15,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:15,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031552478] [2020-10-14 10:03:15,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:15,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:15,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:15,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:15,025 INFO L87 Difference]: Start difference. First operand 11625 states and 19711 transitions. Second operand 5 states. [2020-10-14 10:03:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:15,988 INFO L93 Difference]: Finished difference Result 26757 states and 44785 transitions. [2020-10-14 10:03:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:15,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:03:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:16,003 INFO L225 Difference]: With dead ends: 26757 [2020-10-14 10:03:16,003 INFO L226 Difference]: Without dead ends: 15179 [2020-10-14 10:03:16,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15179 states. [2020-10-14 10:03:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15179 to 13049. [2020-10-14 10:03:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13049 states. [2020-10-14 10:03:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13049 states to 13049 states and 22287 transitions. [2020-10-14 10:03:16,351 INFO L78 Accepts]: Start accepts. Automaton has 13049 states and 22287 transitions. Word has length 185 [2020-10-14 10:03:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:16,352 INFO L479 AbstractCegarLoop]: Abstraction has 13049 states and 22287 transitions. [2020-10-14 10:03:16,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13049 states and 22287 transitions. [2020-10-14 10:03:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:03:16,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:16,361 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:16,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:03:16,361 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash -521945879, now seen corresponding path program 1 times [2020-10-14 10:03:16,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:16,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159507440] [2020-10-14 10:03:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:20,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:20,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:03:20,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4382 [2020-10-14 10:03:20,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:20,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:03:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 10:03:20,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159507440] [2020-10-14 10:03:20,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:20,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337575263] [2020-10-14 10:03:20,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:20,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:20,868 INFO L87 Difference]: Start difference. First operand 13049 states and 22287 transitions. Second operand 5 states. [2020-10-14 10:03:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:21,885 INFO L93 Difference]: Finished difference Result 20675 states and 34956 transitions. [2020-10-14 10:03:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:21,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:03:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:21,899 INFO L225 Difference]: With dead ends: 20675 [2020-10-14 10:03:21,899 INFO L226 Difference]: Without dead ends: 13737 [2020-10-14 10:03:21,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13737 states. [2020-10-14 10:03:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13737 to 13017. [2020-10-14 10:03:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13017 states. [2020-10-14 10:03:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13017 states to 13017 states and 22239 transitions. [2020-10-14 10:03:22,125 INFO L78 Accepts]: Start accepts. Automaton has 13017 states and 22239 transitions. Word has length 185 [2020-10-14 10:03:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:22,125 INFO L479 AbstractCegarLoop]: Abstraction has 13017 states and 22239 transitions. [2020-10-14 10:03:22,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 13017 states and 22239 transitions. [2020-10-14 10:03:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:03:22,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:22,134 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:22,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:03:22,134 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash 117252251, now seen corresponding path program 1 times [2020-10-14 10:03:22,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:22,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787925394] [2020-10-14 10:03:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:27,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:03:27,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:03:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:03:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:27,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:03:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:03:27,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787925394] [2020-10-14 10:03:27,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:27,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:27,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492410791] [2020-10-14 10:03:27,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:27,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:27,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:27,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:27,243 INFO L87 Difference]: Start difference. First operand 13017 states and 22239 transitions. Second operand 5 states. [2020-10-14 10:03:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:28,157 INFO L93 Difference]: Finished difference Result 20049 states and 34163 transitions. [2020-10-14 10:03:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:28,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:03:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:28,170 INFO L225 Difference]: With dead ends: 20049 [2020-10-14 10:03:28,170 INFO L226 Difference]: Without dead ends: 13175 [2020-10-14 10:03:28,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13175 states. [2020-10-14 10:03:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 13017. [2020-10-14 10:03:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13017 states. [2020-10-14 10:03:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13017 states to 13017 states and 22237 transitions. [2020-10-14 10:03:28,388 INFO L78 Accepts]: Start accepts. Automaton has 13017 states and 22237 transitions. Word has length 186 [2020-10-14 10:03:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:28,388 INFO L479 AbstractCegarLoop]: Abstraction has 13017 states and 22237 transitions. [2020-10-14 10:03:28,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 13017 states and 22237 transitions. [2020-10-14 10:03:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:03:28,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:28,397 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:28,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:03:28,398 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:28,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1955978279, now seen corresponding path program 1 times [2020-10-14 10:03:28,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:28,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945372643] [2020-10-14 10:03:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:03:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:03:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:33,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:33,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:33,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:03:33,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945372643] [2020-10-14 10:03:33,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:33,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:33,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031173279] [2020-10-14 10:03:33,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:33,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:33,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:33,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:33,601 INFO L87 Difference]: Start difference. First operand 13017 states and 22237 transitions. Second operand 5 states. [2020-10-14 10:03:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:34,575 INFO L93 Difference]: Finished difference Result 28657 states and 48301 transitions. [2020-10-14 10:03:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:34,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:03:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:34,595 INFO L225 Difference]: With dead ends: 28657 [2020-10-14 10:03:34,596 INFO L226 Difference]: Without dead ends: 15687 [2020-10-14 10:03:34,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15687 states. [2020-10-14 10:03:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15687 to 13051. [2020-10-14 10:03:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13051 states. [2020-10-14 10:03:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13051 states to 13051 states and 22255 transitions. [2020-10-14 10:03:34,857 INFO L78 Accepts]: Start accepts. Automaton has 13051 states and 22255 transitions. Word has length 186 [2020-10-14 10:03:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:34,858 INFO L479 AbstractCegarLoop]: Abstraction has 13051 states and 22255 transitions. [2020-10-14 10:03:34,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 13051 states and 22255 transitions. [2020-10-14 10:03:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:03:34,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:34,867 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-14 10:03:34,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:03:34,868 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:34,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1399480418, now seen corresponding path program 1 times [2020-10-14 10:03:34,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:34,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410190984] [2020-10-14 10:03:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:39,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:03:39,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:03:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:39,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:39,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:39,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:03:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:39,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:03:39,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410190984] [2020-10-14 10:03:39,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:39,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:39,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746836363] [2020-10-14 10:03:39,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:39,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:39,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:39,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:39,993 INFO L87 Difference]: Start difference. First operand 13051 states and 22255 transitions. Second operand 5 states. [2020-10-14 10:03:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:41,048 INFO L93 Difference]: Finished difference Result 28247 states and 47393 transitions. [2020-10-14 10:03:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:41,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:03:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:41,061 INFO L225 Difference]: With dead ends: 28247 [2020-10-14 10:03:41,061 INFO L226 Difference]: Without dead ends: 15245 [2020-10-14 10:03:41,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2020-10-14 10:03:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 11755. [2020-10-14 10:03:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11755 states. [2020-10-14 10:03:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11755 states to 11755 states and 19871 transitions. [2020-10-14 10:03:41,283 INFO L78 Accepts]: Start accepts. Automaton has 11755 states and 19871 transitions. Word has length 186 [2020-10-14 10:03:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:41,284 INFO L479 AbstractCegarLoop]: Abstraction has 11755 states and 19871 transitions. [2020-10-14 10:03:41,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11755 states and 19871 transitions. [2020-10-14 10:03:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:03:41,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:41,292 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:41,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:03:41,292 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:41,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1634923944, now seen corresponding path program 1 times [2020-10-14 10:03:41,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:41,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179275672] [2020-10-14 10:03:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:46,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:46,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:46,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:03:46,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179275672] [2020-10-14 10:03:46,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:46,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:46,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194858090] [2020-10-14 10:03:46,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:46,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:46,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:46,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:46,418 INFO L87 Difference]: Start difference. First operand 11755 states and 19871 transitions. Second operand 5 states. [2020-10-14 10:03:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:47,380 INFO L93 Difference]: Finished difference Result 25969 states and 43331 transitions. [2020-10-14 10:03:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:47,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:03:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:47,394 INFO L225 Difference]: With dead ends: 25969 [2020-10-14 10:03:47,394 INFO L226 Difference]: Without dead ends: 14071 [2020-10-14 10:03:47,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2020-10-14 10:03:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 11997. [2020-10-14 10:03:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11997 states. [2020-10-14 10:03:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 20351 transitions. [2020-10-14 10:03:47,630 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 20351 transitions. Word has length 186 [2020-10-14 10:03:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:47,630 INFO L479 AbstractCegarLoop]: Abstraction has 11997 states and 20351 transitions. [2020-10-14 10:03:47,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 20351 transitions. [2020-10-14 10:03:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:03:47,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:47,638 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:47,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:03:47,639 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:47,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1142958466, now seen corresponding path program 1 times [2020-10-14 10:03:47,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:47,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108950995] [2020-10-14 10:03:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:52,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:03:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:52,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:52,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:52,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:52,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:52,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 10:03:52,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108950995] [2020-10-14 10:03:52,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:52,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:03:52,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27528968] [2020-10-14 10:03:52,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:03:52,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:52,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:03:52,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:52,827 INFO L87 Difference]: Start difference. First operand 11997 states and 20351 transitions. Second operand 6 states. [2020-10-14 10:03:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:53,813 INFO L93 Difference]: Finished difference Result 23933 states and 40398 transitions. [2020-10-14 10:03:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 10:03:53,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-10-14 10:03:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:53,825 INFO L225 Difference]: With dead ends: 23933 [2020-10-14 10:03:53,825 INFO L226 Difference]: Without dead ends: 11979 [2020-10-14 10:03:53,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:03:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11979 states. [2020-10-14 10:03:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 11637. [2020-10-14 10:03:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11637 states. [2020-10-14 10:03:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 19685 transitions. [2020-10-14 10:03:54,061 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 19685 transitions. Word has length 186 [2020-10-14 10:03:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:54,062 INFO L479 AbstractCegarLoop]: Abstraction has 11637 states and 19685 transitions. [2020-10-14 10:03:54,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:03:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 19685 transitions. [2020-10-14 10:03:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 10:03:54,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:54,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:54,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:03:54,073 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1068834899, now seen corresponding path program 1 times [2020-10-14 10:03:54,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:54,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56950637] [2020-10-14 10:03:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 10:03:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:03:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:03:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:59,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:03:59,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56950637] [2020-10-14 10:03:59,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:59,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:59,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923098956] [2020-10-14 10:03:59,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:59,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:59,170 INFO L87 Difference]: Start difference. First operand 11637 states and 19685 transitions. Second operand 5 states. [2020-10-14 10:03:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:59,938 INFO L93 Difference]: Finished difference Result 17561 states and 29595 transitions. [2020-10-14 10:03:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:59,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 10:03:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:59,950 INFO L225 Difference]: With dead ends: 17561 [2020-10-14 10:03:59,950 INFO L226 Difference]: Without dead ends: 11671 [2020-10-14 10:03:59,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11671 states. [2020-10-14 10:04:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11671 to 11637. [2020-10-14 10:04:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11637 states. [2020-10-14 10:04:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 19683 transitions. [2020-10-14 10:04:00,174 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 19683 transitions. Word has length 187 [2020-10-14 10:04:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:00,174 INFO L479 AbstractCegarLoop]: Abstraction has 11637 states and 19683 transitions. [2020-10-14 10:04:00,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 19683 transitions. [2020-10-14 10:04:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:04:00,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:00,183 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:00,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:04:00,183 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash 630078010, now seen corresponding path program 1 times [2020-10-14 10:04:00,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:00,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80191914] [2020-10-14 10:04:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:00,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 10:04:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:01,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:04:01,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80191914] [2020-10-14 10:04:01,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:01,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:01,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94434322] [2020-10-14 10:04:01,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:01,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:01,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:01,910 INFO L87 Difference]: Start difference. First operand 11637 states and 19683 transitions. Second operand 5 states. [2020-10-14 10:04:03,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:03,036 INFO L93 Difference]: Finished difference Result 26111 states and 43660 transitions. [2020-10-14 10:04:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:03,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:04:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:03,051 INFO L225 Difference]: With dead ends: 26111 [2020-10-14 10:04:03,051 INFO L226 Difference]: Without dead ends: 14517 [2020-10-14 10:04:03,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14517 states. [2020-10-14 10:04:03,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14517 to 12253. [2020-10-14 10:04:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20811 transitions. [2020-10-14 10:04:03,298 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20811 transitions. Word has length 188 [2020-10-14 10:04:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:03,298 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20811 transitions. [2020-10-14 10:04:03,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20811 transitions. [2020-10-14 10:04:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:04:03,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:03,307 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:03,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:04:03,307 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1105163808, now seen corresponding path program 1 times [2020-10-14 10:04:03,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:03,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047783875] [2020-10-14 10:04:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:04:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:04:08,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047783875] [2020-10-14 10:04:08,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:08,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:08,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449131830] [2020-10-14 10:04:08,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:08,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:08,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:08,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:08,426 INFO L87 Difference]: Start difference. First operand 12253 states and 20811 transitions. Second operand 5 states. [2020-10-14 10:04:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:09,166 INFO L93 Difference]: Finished difference Result 18773 states and 31824 transitions. [2020-10-14 10:04:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:09,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:04:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:09,178 INFO L225 Difference]: With dead ends: 18773 [2020-10-14 10:04:09,178 INFO L226 Difference]: Without dead ends: 12267 [2020-10-14 10:04:09,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12267 states. [2020-10-14 10:04:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12267 to 12253. [2020-10-14 10:04:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20809 transitions. [2020-10-14 10:04:09,487 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20809 transitions. Word has length 188 [2020-10-14 10:04:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:09,488 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20809 transitions. [2020-10-14 10:04:09,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20809 transitions. [2020-10-14 10:04:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:04:09,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:09,496 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:09,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:04:09,496 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1319511028, now seen corresponding path program 1 times [2020-10-14 10:04:09,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:09,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120217739] [2020-10-14 10:04:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-14 10:04:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:04:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:10,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:10,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 10:04:11,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120217739] [2020-10-14 10:04:11,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:11,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:11,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392571125] [2020-10-14 10:04:11,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:11,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:11,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:11,023 INFO L87 Difference]: Start difference. First operand 12253 states and 20809 transitions. Second operand 5 states. [2020-10-14 10:04:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:12,298 INFO L93 Difference]: Finished difference Result 26079 states and 43594 transitions. [2020-10-14 10:04:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:12,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:04:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:12,312 INFO L225 Difference]: With dead ends: 26079 [2020-10-14 10:04:12,312 INFO L226 Difference]: Without dead ends: 13869 [2020-10-14 10:04:12,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13869 states. [2020-10-14 10:04:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13869 to 12253. [2020-10-14 10:04:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20777 transitions. [2020-10-14 10:04:12,570 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20777 transitions. Word has length 193 [2020-10-14 10:04:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:12,571 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20777 transitions. [2020-10-14 10:04:12,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20777 transitions. [2020-10-14 10:04:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:04:12,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:12,580 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:12,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:04:12,580 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:12,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1603648970, now seen corresponding path program 1 times [2020-10-14 10:04:12,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:12,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530825410] [2020-10-14 10:04:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:04:15,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-14 10:04:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:04:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:16,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:16,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:16,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 10:04:16,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530825410] [2020-10-14 10:04:16,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:16,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:16,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822494200] [2020-10-14 10:04:16,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:16,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:16,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:16,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:16,041 INFO L87 Difference]: Start difference. First operand 12253 states and 20777 transitions. Second operand 5 states. [2020-10-14 10:04:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:17,305 INFO L93 Difference]: Finished difference Result 27343 states and 45850 transitions. [2020-10-14 10:04:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:17,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:04:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:17,320 INFO L225 Difference]: With dead ends: 27343 [2020-10-14 10:04:17,321 INFO L226 Difference]: Without dead ends: 15133 [2020-10-14 10:04:17,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2020-10-14 10:04:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 12253. [2020-10-14 10:04:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20777 transitions. [2020-10-14 10:04:17,587 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20777 transitions. Word has length 193 [2020-10-14 10:04:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:17,587 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20777 transitions. [2020-10-14 10:04:17,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20777 transitions. [2020-10-14 10:04:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:04:17,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:17,597 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:17,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:04:17,597 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:17,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:17,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1615720640, now seen corresponding path program 1 times [2020-10-14 10:04:17,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:17,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823201628] [2020-10-14 10:04:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:04:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:19,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:19,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:19,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:19,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:04:19,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:19,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 10:04:19,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823201628] [2020-10-14 10:04:19,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:19,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:19,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387462485] [2020-10-14 10:04:19,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:19,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:19,334 INFO L87 Difference]: Start difference. First operand 12253 states and 20777 transitions. Second operand 5 states. [2020-10-14 10:04:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:20,547 INFO L93 Difference]: Finished difference Result 27343 states and 45850 transitions. [2020-10-14 10:04:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:20,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:04:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:20,561 INFO L225 Difference]: With dead ends: 27343 [2020-10-14 10:04:20,561 INFO L226 Difference]: Without dead ends: 15133 [2020-10-14 10:04:20,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2020-10-14 10:04:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 12253. [2020-10-14 10:04:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20777 transitions. [2020-10-14 10:04:20,834 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20777 transitions. Word has length 193 [2020-10-14 10:04:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:20,834 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20777 transitions. [2020-10-14 10:04:20,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20777 transitions. [2020-10-14 10:04:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 10:04:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:20,844 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:20,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:04:20,844 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2089900789, now seen corresponding path program 1 times [2020-10-14 10:04:20,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:20,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447936259] [2020-10-14 10:04:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:22,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:22,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 10:04:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:22,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 10:04:22,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447936259] [2020-10-14 10:04:22,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:22,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:22,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759390674] [2020-10-14 10:04:22,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:22,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:22,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:22,554 INFO L87 Difference]: Start difference. First operand 12253 states and 20777 transitions. Second operand 5 states. [2020-10-14 10:04:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:23,864 INFO L93 Difference]: Finished difference Result 27343 states and 45850 transitions. [2020-10-14 10:04:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:23,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-14 10:04:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:23,878 INFO L225 Difference]: With dead ends: 27343 [2020-10-14 10:04:23,878 INFO L226 Difference]: Without dead ends: 15133 [2020-10-14 10:04:23,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2020-10-14 10:04:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 12253. [2020-10-14 10:04:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20777 transitions. [2020-10-14 10:04:24,156 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20777 transitions. Word has length 196 [2020-10-14 10:04:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:24,156 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20777 transitions. [2020-10-14 10:04:24,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20777 transitions. [2020-10-14 10:04:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 10:04:24,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:24,165 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:24,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:04:24,165 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -198297428, now seen corresponding path program 1 times [2020-10-14 10:04:24,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:24,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014064499] [2020-10-14 10:04:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:29,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:04:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:29,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-14 10:04:29,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014064499] [2020-10-14 10:04:29,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:29,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:29,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913937955] [2020-10-14 10:04:29,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:29,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:29,306 INFO L87 Difference]: Start difference. First operand 12253 states and 20777 transitions. Second operand 5 states. [2020-10-14 10:04:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:30,089 INFO L93 Difference]: Finished difference Result 24477 states and 41514 transitions. [2020-10-14 10:04:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:30,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 10:04:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:30,101 INFO L225 Difference]: With dead ends: 24477 [2020-10-14 10:04:30,102 INFO L226 Difference]: Without dead ends: 12267 [2020-10-14 10:04:30,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12267 states. [2020-10-14 10:04:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12267 to 12253. [2020-10-14 10:04:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20775 transitions. [2020-10-14 10:04:30,372 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20775 transitions. Word has length 198 [2020-10-14 10:04:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:30,372 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20775 transitions. [2020-10-14 10:04:30,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20775 transitions. [2020-10-14 10:04:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 10:04:30,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:30,381 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:30,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:04:30,381 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:30,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:30,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2050314401, now seen corresponding path program 1 times [2020-10-14 10:04:30,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:30,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65214965] [2020-10-14 10:04:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:32,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 10:04:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:04:32,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-14 10:04:32,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65214965] [2020-10-14 10:04:32,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:32,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:32,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297963694] [2020-10-14 10:04:32,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:32,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:32,445 INFO L87 Difference]: Start difference. First operand 12253 states and 20775 transitions. Second operand 5 states. [2020-10-14 10:04:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:33,719 INFO L93 Difference]: Finished difference Result 26145 states and 43661 transitions. [2020-10-14 10:04:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:33,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 10:04:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:33,732 INFO L225 Difference]: With dead ends: 26145 [2020-10-14 10:04:33,732 INFO L226 Difference]: Without dead ends: 13935 [2020-10-14 10:04:33,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13935 states. [2020-10-14 10:04:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13935 to 12253. [2020-10-14 10:04:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20743 transitions. [2020-10-14 10:04:34,018 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20743 transitions. Word has length 198 [2020-10-14 10:04:34,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:34,019 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20743 transitions. [2020-10-14 10:04:34,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20743 transitions. [2020-10-14 10:04:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 10:04:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:34,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:34,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:04:34,028 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1356862457, now seen corresponding path program 1 times [2020-10-14 10:04:34,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:34,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482391089] [2020-10-14 10:04:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:39,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:04:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-14 10:04:39,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482391089] [2020-10-14 10:04:39,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:39,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:39,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772281359] [2020-10-14 10:04:39,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:39,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:39,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:39,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:39,214 INFO L87 Difference]: Start difference. First operand 12253 states and 20743 transitions. Second operand 5 states. [2020-10-14 10:04:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:39,993 INFO L93 Difference]: Finished difference Result 24473 states and 41444 transitions. [2020-10-14 10:04:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:39,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 10:04:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:40,006 INFO L225 Difference]: With dead ends: 24473 [2020-10-14 10:04:40,007 INFO L226 Difference]: Without dead ends: 12263 [2020-10-14 10:04:40,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12263 states. [2020-10-14 10:04:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12263 to 12253. [2020-10-14 10:04:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20741 transitions. [2020-10-14 10:04:40,283 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20741 transitions. Word has length 199 [2020-10-14 10:04:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:40,283 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20741 transitions. [2020-10-14 10:04:40,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20741 transitions. [2020-10-14 10:04:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 10:04:40,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:40,292 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:40,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 10:04:40,292 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:40,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1445946602, now seen corresponding path program 1 times [2020-10-14 10:04:40,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:40,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95985902] [2020-10-14 10:04:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 10:04:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-10-14 10:04:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:42,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-14 10:04:42,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95985902] [2020-10-14 10:04:42,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:42,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:42,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737577843] [2020-10-14 10:04:42,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:42,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:42,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:42,387 INFO L87 Difference]: Start difference. First operand 12253 states and 20741 transitions. Second operand 5 states. [2020-10-14 10:04:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:43,625 INFO L93 Difference]: Finished difference Result 25889 states and 43179 transitions. [2020-10-14 10:04:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:43,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 10:04:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:43,639 INFO L225 Difference]: With dead ends: 25889 [2020-10-14 10:04:43,639 INFO L226 Difference]: Without dead ends: 13679 [2020-10-14 10:04:43,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13679 states. [2020-10-14 10:04:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13679 to 12253. [2020-10-14 10:04:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-14 10:04:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 20709 transitions. [2020-10-14 10:04:43,929 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 20709 transitions. Word has length 199 [2020-10-14 10:04:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:43,930 INFO L479 AbstractCegarLoop]: Abstraction has 12253 states and 20709 transitions. [2020-10-14 10:04:43,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 20709 transitions. [2020-10-14 10:04:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 10:04:43,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:43,943 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:43,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 10:04:43,943 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:43,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1889828789, now seen corresponding path program 1 times [2020-10-14 10:04:43,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:43,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770088908] [2020-10-14 10:04:43,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking...