/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:40:52,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:40:52,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:40:52,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:40:52,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:40:52,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:40:52,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:40:52,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:40:52,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:40:52,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:40:52,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:40:52,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:40:52,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:40:52,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:40:52,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:40:52,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:40:52,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:40:52,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:40:52,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:40:52,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:40:52,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:40:52,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:40:52,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:40:52,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:40:52,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:40:52,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:40:52,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:40:52,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:40:52,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:40:52,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:40:52,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:40:52,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:40:52,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:40:52,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:40:52,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:40:52,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:40:52,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:40:52,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:40:52,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:40:52,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:40:52,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:40:52,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:40:52,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:40:52,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:40:52,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:40:52,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:40:52,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:40:52,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:40:52,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:40:52,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:40:52,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:40:52,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:40:52,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:40:52,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:40:52,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:40:52,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:40:52,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:40:52,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:40:52,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:40:52,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:40:52,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:40:52,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:40:52,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:40:52,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:40:52,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:40:52,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:40:52,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:40:52,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:40:52,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:40:52,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:40:52,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:40:52,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:40:52,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-2.c [2020-10-15 04:40:52,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4e77259b/0ad46934363a4046a219cf8004e4d04f/FLAG7faa504a5 [2020-10-15 04:40:53,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:40:53,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-2.c [2020-10-15 04:40:53,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4e77259b/0ad46934363a4046a219cf8004e4d04f/FLAG7faa504a5 [2020-10-15 04:40:53,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4e77259b/0ad46934363a4046a219cf8004e4d04f [2020-10-15 04:40:53,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:40:53,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:40:53,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:53,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:40:53,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:40:53,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:53" (1/1) ... [2020-10-15 04:40:53,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da780e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:53, skipping insertion in model container [2020-10-15 04:40:53,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:53" (1/1) ... [2020-10-15 04:40:53,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:40:53,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:40:54,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:54,263 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:40:54,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:54,475 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:40:54,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54 WrapperNode [2020-10-15 04:40:54,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:54,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:40:54,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:40:54,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:40:54,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... [2020-10-15 04:40:54,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:40:54,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:40:54,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:40:54,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:40:54,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:40:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:40:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:40:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:40:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:40:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:40:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:40:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:40:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:40:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:40:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:40:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:40:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:40:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:40:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:40:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:40:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:40:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:40:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:40:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:40:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:40:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:40:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:40:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:40:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:40:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:40:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:40:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:40:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:40:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:40:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:40:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:40:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:40:55,449 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:40:56,098 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:40:56,099 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:40:56,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:40:56,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:40:56,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:56 BoogieIcfgContainer [2020-10-15 04:40:56,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:40:56,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:40:56,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:40:56,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:40:56,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:40:53" (1/3) ... [2020-10-15 04:40:56,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b020356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:56, skipping insertion in model container [2020-10-15 04:40:56,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:54" (2/3) ... [2020-10-15 04:40:56,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b020356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:56, skipping insertion in model container [2020-10-15 04:40:56,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:56" (3/3) ... [2020-10-15 04:40:56,136 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2020-10-15 04:40:56,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:40:56,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:40:56,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:40:56,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:40:56,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:40:56,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:40:56,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:40:56,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:40:56,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:40:56,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:40:56,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:40:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-15 04:40:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 04:40:56,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:56,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:56,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -360446002, now seen corresponding path program 1 times [2020-10-15 04:40:56,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:56,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222424341] [2020-10-15 04:40:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 04:40:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-15 04:40:57,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:57,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:40:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:40:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:57,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:57,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:57,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:57,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222424341] [2020-10-15 04:40:57,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:57,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711653586] [2020-10-15 04:40:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:57,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:57,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:57,416 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-10-15 04:40:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:58,261 INFO L93 Difference]: Finished difference Result 445 states and 756 transitions. [2020-10-15 04:40:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:58,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-15 04:40:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:58,280 INFO L225 Difference]: With dead ends: 445 [2020-10-15 04:40:58,281 INFO L226 Difference]: Without dead ends: 272 [2020-10-15 04:40:58,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-15 04:40:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2020-10-15 04:40:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 04:40:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 408 transitions. [2020-10-15 04:40:58,392 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 408 transitions. Word has length 48 [2020-10-15 04:40:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:58,394 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 408 transitions. [2020-10-15 04:40:58,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 408 transitions. [2020-10-15 04:40:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:40:58,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:58,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:58,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:40:58,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 13790046, now seen corresponding path program 1 times [2020-10-15 04:40:58,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:58,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457993494] [2020-10-15 04:40:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:40:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-15 04:40:59,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:40:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:40:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:59,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:59,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:40:59,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:59,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457993494] [2020-10-15 04:40:59,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:59,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:59,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949558623] [2020-10-15 04:40:59,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:59,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:59,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:59,204 INFO L87 Difference]: Start difference. First operand 272 states and 408 transitions. Second operand 4 states. [2020-10-15 04:40:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:59,766 INFO L93 Difference]: Finished difference Result 530 states and 811 transitions. [2020-10-15 04:40:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:59,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 04:40:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:59,772 INFO L225 Difference]: With dead ends: 530 [2020-10-15 04:40:59,772 INFO L226 Difference]: Without dead ends: 400 [2020-10-15 04:40:59,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-15 04:40:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2020-10-15 04:40:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-15 04:40:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 598 transitions. [2020-10-15 04:40:59,809 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 598 transitions. Word has length 65 [2020-10-15 04:40:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:59,810 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 598 transitions. [2020-10-15 04:40:59,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 598 transitions. [2020-10-15 04:40:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 04:40:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:59,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:59,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:40:59,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1969750860, now seen corresponding path program 1 times [2020-10-15 04:40:59,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:59,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768855588] [2020-10-15 04:40:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:00,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 04:41:00,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-15 04:41:00,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:00,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:41:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:00,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:00,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:00,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768855588] [2020-10-15 04:41:00,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:00,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:00,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747237384] [2020-10-15 04:41:00,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:00,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:00,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:00,552 INFO L87 Difference]: Start difference. First operand 400 states and 598 transitions. Second operand 4 states. [2020-10-15 04:41:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:01,218 INFO L93 Difference]: Finished difference Result 786 states and 1191 transitions. [2020-10-15 04:41:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:01,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-15 04:41:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:01,224 INFO L225 Difference]: With dead ends: 786 [2020-10-15 04:41:01,225 INFO L226 Difference]: Without dead ends: 528 [2020-10-15 04:41:01,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-15 04:41:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2020-10-15 04:41:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-15 04:41:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 789 transitions. [2020-10-15 04:41:01,274 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 789 transitions. Word has length 87 [2020-10-15 04:41:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:01,276 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 789 transitions. [2020-10-15 04:41:01,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 789 transitions. [2020-10-15 04:41:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 04:41:01,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:01,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:01,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:41:01,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 779857426, now seen corresponding path program 1 times [2020-10-15 04:41:01,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:01,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370715938] [2020-10-15 04:41:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:04,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 04:41:04,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-15 04:41:04,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:04,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:41:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:41:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:04,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:04,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:04,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:04,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:41:04,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370715938] [2020-10-15 04:41:04,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:04,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:04,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551438607] [2020-10-15 04:41:04,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:04,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:04,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:04,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:04,997 INFO L87 Difference]: Start difference. First operand 528 states and 789 transitions. Second operand 4 states. [2020-10-15 04:41:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:05,541 INFO L93 Difference]: Finished difference Result 1042 states and 1573 transitions. [2020-10-15 04:41:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:05,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-15 04:41:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:05,546 INFO L225 Difference]: With dead ends: 1042 [2020-10-15 04:41:05,547 INFO L226 Difference]: Without dead ends: 656 [2020-10-15 04:41:05,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-15 04:41:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2020-10-15 04:41:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-15 04:41:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 981 transitions. [2020-10-15 04:41:05,571 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 981 transitions. Word has length 111 [2020-10-15 04:41:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:05,571 INFO L479 AbstractCegarLoop]: Abstraction has 656 states and 981 transitions. [2020-10-15 04:41:05,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 981 transitions. [2020-10-15 04:41:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 04:41:05,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:05,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:05,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:41:05,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2145658424, now seen corresponding path program 1 times [2020-10-15 04:41:05,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:05,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840966815] [2020-10-15 04:41:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 04:41:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3481 [2020-10-15 04:41:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:09,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:41:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:41:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:41:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:09,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:09,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840966815] [2020-10-15 04:41:09,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:09,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:09,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557519845] [2020-10-15 04:41:09,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:09,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:09,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:09,212 INFO L87 Difference]: Start difference. First operand 656 states and 981 transitions. Second operand 4 states. [2020-10-15 04:41:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:09,754 INFO L93 Difference]: Finished difference Result 1298 states and 1957 transitions. [2020-10-15 04:41:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:09,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-15 04:41:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:09,764 INFO L225 Difference]: With dead ends: 1298 [2020-10-15 04:41:09,764 INFO L226 Difference]: Without dead ends: 784 [2020-10-15 04:41:09,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-15 04:41:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-10-15 04:41:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-10-15 04:41:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1174 transitions. [2020-10-15 04:41:09,799 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1174 transitions. Word has length 140 [2020-10-15 04:41:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:09,799 INFO L479 AbstractCegarLoop]: Abstraction has 784 states and 1174 transitions. [2020-10-15 04:41:09,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1174 transitions. [2020-10-15 04:41:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 04:41:09,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:09,807 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] [2020-10-15 04:41:09,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:41:09,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1662299885, now seen corresponding path program 1 times [2020-10-15 04:41:09,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:09,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639169204] [2020-10-15 04:41:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:14,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:41:14,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:41:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:14,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:41:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:41:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:41:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:15,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:15,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-15 04:41:15,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639169204] [2020-10-15 04:41:15,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:15,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:41:15,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284626410] [2020-10-15 04:41:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:41:15,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:15,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:41:15,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:41:15,542 INFO L87 Difference]: Start difference. First operand 784 states and 1174 transitions. Second operand 8 states. [2020-10-15 04:41:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:17,767 INFO L93 Difference]: Finished difference Result 3258 states and 4938 transitions. [2020-10-15 04:41:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:41:17,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-10-15 04:41:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:17,783 INFO L225 Difference]: With dead ends: 3258 [2020-10-15 04:41:17,784 INFO L226 Difference]: Without dead ends: 2488 [2020-10-15 04:41:17,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:41:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2020-10-15 04:41:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 1648. [2020-10-15 04:41:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-10-15 04:41:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2563 transitions. [2020-10-15 04:41:17,857 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2563 transitions. Word has length 171 [2020-10-15 04:41:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:17,857 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 2563 transitions. [2020-10-15 04:41:17,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:41:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2563 transitions. [2020-10-15 04:41:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:17,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:17,864 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:17,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:41:17,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1988168324, now seen corresponding path program 1 times [2020-10-15 04:41:17,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:17,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816788954] [2020-10-15 04:41:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:17,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 04:41:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:22,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:41:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:41:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:23,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:41:23,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816788954] [2020-10-15 04:41:23,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:23,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:23,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641913441] [2020-10-15 04:41:23,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:23,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:23,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:23,056 INFO L87 Difference]: Start difference. First operand 1648 states and 2563 transitions. Second operand 5 states. [2020-10-15 04:41:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:24,768 INFO L93 Difference]: Finished difference Result 4508 states and 6984 transitions. [2020-10-15 04:41:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:24,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:24,790 INFO L225 Difference]: With dead ends: 4508 [2020-10-15 04:41:24,790 INFO L226 Difference]: Without dead ends: 2874 [2020-10-15 04:41:24,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-10-15 04:41:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1960. [2020-10-15 04:41:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-10-15 04:41:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3091 transitions. [2020-10-15 04:41:24,887 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3091 transitions. Word has length 185 [2020-10-15 04:41:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:24,888 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 3091 transitions. [2020-10-15 04:41:24,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3091 transitions. [2020-10-15 04:41:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:24,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:24,895 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:24,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:41:24,895 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1359761086, now seen corresponding path program 1 times [2020-10-15 04:41:24,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:24,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106728888] [2020-10-15 04:41:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:29,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:29,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:41:29,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:29,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:41:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:30,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:30,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:30,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:30,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:30,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-15 04:41:30,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106728888] [2020-10-15 04:41:30,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:30,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:30,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485004629] [2020-10-15 04:41:30,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:30,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:30,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:30,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:30,061 INFO L87 Difference]: Start difference. First operand 1960 states and 3091 transitions. Second operand 5 states. [2020-10-15 04:41:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:31,269 INFO L93 Difference]: Finished difference Result 3524 states and 5483 transitions. [2020-10-15 04:41:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:31,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:31,285 INFO L225 Difference]: With dead ends: 3524 [2020-10-15 04:41:31,286 INFO L226 Difference]: Without dead ends: 2598 [2020-10-15 04:41:31,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2020-10-15 04:41:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2074. [2020-10-15 04:41:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2020-10-15 04:41:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3283 transitions. [2020-10-15 04:41:31,382 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3283 transitions. Word has length 185 [2020-10-15 04:41:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:31,382 INFO L479 AbstractCegarLoop]: Abstraction has 2074 states and 3283 transitions. [2020-10-15 04:41:31,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3283 transitions. [2020-10-15 04:41:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:31,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:31,390 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:31,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:31,390 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:31,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1784869312, now seen corresponding path program 2 times [2020-10-15 04:41:31,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:31,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738661083] [2020-10-15 04:41:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:41:36,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:36,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:41:36,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:36,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:36,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:36,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-15 04:41:36,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738661083] [2020-10-15 04:41:36,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:36,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:36,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39813584] [2020-10-15 04:41:36,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:36,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:36,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:36,616 INFO L87 Difference]: Start difference. First operand 2074 states and 3283 transitions. Second operand 5 states. [2020-10-15 04:41:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:37,437 INFO L93 Difference]: Finished difference Result 6163 states and 9750 transitions. [2020-10-15 04:41:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:37,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:37,459 INFO L225 Difference]: With dead ends: 6163 [2020-10-15 04:41:37,459 INFO L226 Difference]: Without dead ends: 4103 [2020-10-15 04:41:37,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-10-15 04:41:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2020-10-15 04:41:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-10-15 04:41:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6441 transitions. [2020-10-15 04:41:37,645 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6441 transitions. Word has length 185 [2020-10-15 04:41:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:37,646 INFO L479 AbstractCegarLoop]: Abstraction has 4101 states and 6441 transitions. [2020-10-15 04:41:37,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6441 transitions. [2020-10-15 04:41:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:37,659 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:37,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:37,660 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:37,660 INFO L82 PathProgramCache]: Analyzing trace with hash -861701886, now seen corresponding path program 1 times [2020-10-15 04:41:37,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:37,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306487295] [2020-10-15 04:41:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:41:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 04:41:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:41:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-15 04:41:42,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306487295] [2020-10-15 04:41:42,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:42,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:42,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66905689] [2020-10-15 04:41:42,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:42,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:42,870 INFO L87 Difference]: Start difference. First operand 4101 states and 6441 transitions. Second operand 5 states. [2020-10-15 04:41:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:44,123 INFO L93 Difference]: Finished difference Result 7207 states and 11145 transitions. [2020-10-15 04:41:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:44,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:44,154 INFO L225 Difference]: With dead ends: 7207 [2020-10-15 04:41:44,154 INFO L226 Difference]: Without dead ends: 5147 [2020-10-15 04:41:44,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:44,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-15 04:41:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 4137. [2020-10-15 04:41:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4137 states. [2020-10-15 04:41:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6501 transitions. [2020-10-15 04:41:44,406 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6501 transitions. Word has length 185 [2020-10-15 04:41:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:44,406 INFO L479 AbstractCegarLoop]: Abstraction has 4137 states and 6501 transitions. [2020-10-15 04:41:44,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6501 transitions. [2020-10-15 04:41:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:44,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:44,419 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:44,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:44,420 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash -464650620, now seen corresponding path program 1 times [2020-10-15 04:41:44,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:44,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688762736] [2020-10-15 04:41:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:49,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:49,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:49,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:41:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:41:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:49,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:49,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:49,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:49,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:41:49,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688762736] [2020-10-15 04:41:49,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:49,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:49,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263847134] [2020-10-15 04:41:49,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:49,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:49,612 INFO L87 Difference]: Start difference. First operand 4137 states and 6501 transitions. Second operand 5 states. [2020-10-15 04:41:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:50,773 INFO L93 Difference]: Finished difference Result 7243 states and 11193 transitions. [2020-10-15 04:41:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:50,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:50,819 INFO L225 Difference]: With dead ends: 7243 [2020-10-15 04:41:50,819 INFO L226 Difference]: Without dead ends: 5147 [2020-10-15 04:41:50,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-15 04:41:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 4137. [2020-10-15 04:41:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4137 states. [2020-10-15 04:41:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6501 transitions. [2020-10-15 04:41:50,978 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6501 transitions. Word has length 185 [2020-10-15 04:41:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:50,978 INFO L479 AbstractCegarLoop]: Abstraction has 4137 states and 6501 transitions. [2020-10-15 04:41:50,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6501 transitions. [2020-10-15 04:41:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:50,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:50,991 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:50,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:41:50,992 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash 668337986, now seen corresponding path program 2 times [2020-10-15 04:41:50,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:50,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446582532] [2020-10-15 04:41:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:56,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 04:41:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:41:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:56,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:56,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:56,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:56,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-15 04:41:56,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446582532] [2020-10-15 04:41:56,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:56,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:56,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62856537] [2020-10-15 04:41:56,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:56,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:56,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:56,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:56,118 INFO L87 Difference]: Start difference. First operand 4137 states and 6501 transitions. Second operand 5 states. [2020-10-15 04:41:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:57,278 INFO L93 Difference]: Finished difference Result 7243 states and 11181 transitions. [2020-10-15 04:41:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:57,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:57,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:57,295 INFO L225 Difference]: With dead ends: 7243 [2020-10-15 04:41:57,296 INFO L226 Difference]: Without dead ends: 5147 [2020-10-15 04:41:57,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-15 04:41:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 4185. [2020-10-15 04:41:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4185 states. [2020-10-15 04:41:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 6573 transitions. [2020-10-15 04:41:57,450 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 6573 transitions. Word has length 185 [2020-10-15 04:41:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:57,450 INFO L479 AbstractCegarLoop]: Abstraction has 4185 states and 6573 transitions. [2020-10-15 04:41:57,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 6573 transitions. [2020-10-15 04:41:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:57,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:57,462 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:57,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:41:57,463 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash 543446080, now seen corresponding path program 3 times [2020-10-15 04:41:57,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:57,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411786456] [2020-10-15 04:41:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:42:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-15 04:42:02,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:02,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:42:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:42:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:42:02,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411786456] [2020-10-15 04:42:02,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:02,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:02,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354116154] [2020-10-15 04:42:02,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:02,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:02,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:02,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:02,684 INFO L87 Difference]: Start difference. First operand 4185 states and 6573 transitions. Second operand 5 states. [2020-10-15 04:42:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:03,749 INFO L93 Difference]: Finished difference Result 7291 states and 11241 transitions. [2020-10-15 04:42:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:03,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:42:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:03,761 INFO L225 Difference]: With dead ends: 7291 [2020-10-15 04:42:03,761 INFO L226 Difference]: Without dead ends: 5147 [2020-10-15 04:42:03,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:42:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-15 04:42:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 4209. [2020-10-15 04:42:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4209 states. [2020-10-15 04:42:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6609 transitions. [2020-10-15 04:42:03,893 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6609 transitions. Word has length 185 [2020-10-15 04:42:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:03,894 INFO L479 AbstractCegarLoop]: Abstraction has 4209 states and 6609 transitions. [2020-10-15 04:42:03,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6609 transitions. [2020-10-15 04:42:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:42:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:03,909 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:03,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:42:03,909 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1977689854, now seen corresponding path program 4 times [2020-10-15 04:42:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:03,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330604108] [2020-10-15 04:42:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:08,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:42:08,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:08,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 04:42:08,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:08,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-15 04:42:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 04:42:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:09,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:09,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-15 04:42:09,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330604108] [2020-10-15 04:42:09,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:09,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:09,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593364906] [2020-10-15 04:42:09,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:09,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:09,133 INFO L87 Difference]: Start difference. First operand 4209 states and 6609 transitions. Second operand 4 states. [2020-10-15 04:42:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:09,689 INFO L93 Difference]: Finished difference Result 8399 states and 13240 transitions. [2020-10-15 04:42:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:09,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2020-10-15 04:42:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:09,700 INFO L225 Difference]: With dead ends: 8399 [2020-10-15 04:42:09,700 INFO L226 Difference]: Without dead ends: 4907 [2020-10-15 04:42:09,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2020-10-15 04:42:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4907. [2020-10-15 04:42:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-15 04:42:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7712 transitions. [2020-10-15 04:42:09,842 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7712 transitions. Word has length 185 [2020-10-15 04:42:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:09,842 INFO L479 AbstractCegarLoop]: Abstraction has 4907 states and 7712 transitions. [2020-10-15 04:42:09,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7712 transitions. [2020-10-15 04:42:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-15 04:42:09,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:09,854 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:09,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:42:09,854 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1465707953, now seen corresponding path program 1 times [2020-10-15 04:42:09,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:09,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799320806] [2020-10-15 04:42:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:42:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:42:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:14,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:42:14,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799320806] [2020-10-15 04:42:14,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:14,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:14,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738043768] [2020-10-15 04:42:14,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:14,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:14,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:15,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:15,000 INFO L87 Difference]: Start difference. First operand 4907 states and 7712 transitions. Second operand 4 states. [2020-10-15 04:42:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:15,534 INFO L93 Difference]: Finished difference Result 9795 states and 15446 transitions. [2020-10-15 04:42:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:15,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-15 04:42:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:15,547 INFO L225 Difference]: With dead ends: 9795 [2020-10-15 04:42:15,547 INFO L226 Difference]: Without dead ends: 5605 [2020-10-15 04:42:15,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5605 states. [2020-10-15 04:42:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5605 to 5605. [2020-10-15 04:42:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5605 states. [2020-10-15 04:42:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 8819 transitions. [2020-10-15 04:42:15,725 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 8819 transitions. Word has length 217 [2020-10-15 04:42:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:15,725 INFO L479 AbstractCegarLoop]: Abstraction has 5605 states and 8819 transitions. [2020-10-15 04:42:15,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 8819 transitions. [2020-10-15 04:42:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:42:15,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:15,743 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:15,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:42:15,744 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:15,744 INFO L82 PathProgramCache]: Analyzing trace with hash 554976155, now seen corresponding path program 1 times [2020-10-15 04:42:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:15,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294907731] [2020-10-15 04:42:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-15 04:42:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:42:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:20,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:20,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:20,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:20,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:20,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:42:20,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294907731] [2020-10-15 04:42:20,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:20,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:20,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532893361] [2020-10-15 04:42:20,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:20,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:20,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:20,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:20,937 INFO L87 Difference]: Start difference. First operand 5605 states and 8819 transitions. Second operand 4 states. [2020-10-15 04:42:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:21,501 INFO L93 Difference]: Finished difference Result 11191 states and 17660 transitions. [2020-10-15 04:42:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:21,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2020-10-15 04:42:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:21,517 INFO L225 Difference]: With dead ends: 11191 [2020-10-15 04:42:21,517 INFO L226 Difference]: Without dead ends: 6303 [2020-10-15 04:42:21,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2020-10-15 04:42:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6303. [2020-10-15 04:42:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6303 states. [2020-10-15 04:42:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 9930 transitions. [2020-10-15 04:42:21,686 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 9930 transitions. Word has length 219 [2020-10-15 04:42:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:21,687 INFO L479 AbstractCegarLoop]: Abstraction has 6303 states and 9930 transitions. [2020-10-15 04:42:21,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 9930 transitions. [2020-10-15 04:42:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-15 04:42:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:21,702 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:21,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:42:21,702 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1322883813, now seen corresponding path program 1 times [2020-10-15 04:42:21,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:21,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618959540] [2020-10-15 04:42:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:26,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 04:42:26,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:42:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2020-10-15 04:42:26,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618959540] [2020-10-15 04:42:26,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:26,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:26,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078884260] [2020-10-15 04:42:26,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:26,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:26,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:26,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:26,922 INFO L87 Difference]: Start difference. First operand 6303 states and 9930 transitions. Second operand 4 states. [2020-10-15 04:42:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:27,498 INFO L93 Difference]: Finished difference Result 12587 states and 19882 transitions. [2020-10-15 04:42:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:27,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2020-10-15 04:42:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:27,514 INFO L225 Difference]: With dead ends: 12587 [2020-10-15 04:42:27,514 INFO L226 Difference]: Without dead ends: 7001 [2020-10-15 04:42:27,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2020-10-15 04:42:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 7001. [2020-10-15 04:42:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2020-10-15 04:42:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11045 transitions. [2020-10-15 04:42:27,685 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11045 transitions. Word has length 252 [2020-10-15 04:42:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:27,685 INFO L479 AbstractCegarLoop]: Abstraction has 7001 states and 11045 transitions. [2020-10-15 04:42:27,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11045 transitions. [2020-10-15 04:42:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-15 04:42:27,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:27,701 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:27,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:42:27,701 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2141340771, now seen corresponding path program 1 times [2020-10-15 04:42:27,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:27,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759264272] [2020-10-15 04:42:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:42:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:42:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-15 04:42:32,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759264272] [2020-10-15 04:42:32,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:32,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:32,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009862522] [2020-10-15 04:42:32,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:32,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:32,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:32,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:32,926 INFO L87 Difference]: Start difference. First operand 7001 states and 11045 transitions. Second operand 5 states. [2020-10-15 04:42:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:33,982 INFO L93 Difference]: Finished difference Result 12175 states and 18841 transitions. [2020-10-15 04:42:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:33,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-15 04:42:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:33,994 INFO L225 Difference]: With dead ends: 12175 [2020-10-15 04:42:33,995 INFO L226 Difference]: Without dead ends: 8563 [2020-10-15 04:42:34,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:42:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2020-10-15 04:42:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 7101. [2020-10-15 04:42:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-10-15 04:42:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 11225 transitions. [2020-10-15 04:42:34,189 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 11225 transitions. Word has length 287 [2020-10-15 04:42:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:34,190 INFO L479 AbstractCegarLoop]: Abstraction has 7101 states and 11225 transitions. [2020-10-15 04:42:34,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 11225 transitions. [2020-10-15 04:42:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-15 04:42:34,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:34,205 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:34,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:42:34,206 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1874361751, now seen corresponding path program 1 times [2020-10-15 04:42:34,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:34,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104220005] [2020-10-15 04:42:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:36,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-15 04:42:36,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1943 [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:42:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:36,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2020-10-15 04:42:36,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104220005] [2020-10-15 04:42:36,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:36,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:36,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252558879] [2020-10-15 04:42:36,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:36,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:36,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:36,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:36,304 INFO L87 Difference]: Start difference. First operand 7101 states and 11225 transitions. Second operand 4 states. [2020-10-15 04:42:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:37,147 INFO L93 Difference]: Finished difference Result 14163 states and 22444 transitions. [2020-10-15 04:42:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:37,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2020-10-15 04:42:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:37,160 INFO L225 Difference]: With dead ends: 14163 [2020-10-15 04:42:37,160 INFO L226 Difference]: Without dead ends: 7789 [2020-10-15 04:42:37,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2020-10-15 04:42:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2020-10-15 04:42:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7789 states. [2020-10-15 04:42:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 12298 transitions. [2020-10-15 04:42:37,359 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 12298 transitions. Word has length 287 [2020-10-15 04:42:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:37,359 INFO L479 AbstractCegarLoop]: Abstraction has 7789 states and 12298 transitions. [2020-10-15 04:42:37,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 12298 transitions. [2020-10-15 04:42:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:42:37,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:37,372 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:37,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:42:37,373 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash -996261992, now seen corresponding path program 1 times [2020-10-15 04:42:37,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:37,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286403365] [2020-10-15 04:42:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:42:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-15 04:42:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:42,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 314 proven. 426 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-15 04:42:43,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286403365] [2020-10-15 04:42:43,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:43,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:42:43,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270629898] [2020-10-15 04:42:43,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:42:43,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:43,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:42:43,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:42:43,201 INFO L87 Difference]: Start difference. First operand 7789 states and 12298 transitions. Second operand 10 states. [2020-10-15 04:42:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:45,689 INFO L93 Difference]: Finished difference Result 19677 states and 31032 transitions. [2020-10-15 04:42:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:42:45,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 326 [2020-10-15 04:42:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:45,706 INFO L225 Difference]: With dead ends: 19677 [2020-10-15 04:42:45,706 INFO L226 Difference]: Without dead ends: 11907 [2020-10-15 04:42:45,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:42:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11907 states. [2020-10-15 04:42:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11907 to 11375. [2020-10-15 04:42:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11375 states. [2020-10-15 04:42:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11375 states to 11375 states and 18076 transitions. [2020-10-15 04:42:45,924 INFO L78 Accepts]: Start accepts. Automaton has 11375 states and 18076 transitions. Word has length 326 [2020-10-15 04:42:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:45,925 INFO L479 AbstractCegarLoop]: Abstraction has 11375 states and 18076 transitions. [2020-10-15 04:42:45,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:42:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11375 states and 18076 transitions. [2020-10-15 04:42:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:42:45,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:45,940 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:45,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:42:45,940 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:45,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1926898006, now seen corresponding path program 1 times [2020-10-15 04:42:45,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:45,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16687572] [2020-10-15 04:42:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-15 04:42:51,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:42:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-15 04:42:51,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16687572] [2020-10-15 04:42:51,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:51,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:51,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854939034] [2020-10-15 04:42:51,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:51,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:51,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:51,158 INFO L87 Difference]: Start difference. First operand 11375 states and 18076 transitions. Second operand 4 states. [2020-10-15 04:42:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:51,761 INFO L93 Difference]: Finished difference Result 22063 states and 35092 transitions. [2020-10-15 04:42:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:51,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:42:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:51,773 INFO L225 Difference]: With dead ends: 22063 [2020-10-15 04:42:51,773 INFO L226 Difference]: Without dead ends: 11746 [2020-10-15 04:42:51,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11746 states. [2020-10-15 04:42:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 11746. [2020-10-15 04:42:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11746 states. [2020-10-15 04:42:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 18654 transitions. [2020-10-15 04:42:51,998 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 18654 transitions. Word has length 326 [2020-10-15 04:42:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:51,999 INFO L479 AbstractCegarLoop]: Abstraction has 11746 states and 18654 transitions. [2020-10-15 04:42:51,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 18654 transitions. [2020-10-15 04:42:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-15 04:42:52,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:52,010 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:52,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:42:52,010 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:52,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:52,010 INFO L82 PathProgramCache]: Analyzing trace with hash 623162180, now seen corresponding path program 1 times [2020-10-15 04:42:52,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:52,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960990296] [2020-10-15 04:42:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:57,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-15 04:42:57,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:42:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:57,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:57,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:57,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2020-10-15 04:42:57,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960990296] [2020-10-15 04:42:57,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:57,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:57,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188317437] [2020-10-15 04:42:57,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:57,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:57,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:57,214 INFO L87 Difference]: Start difference. First operand 11746 states and 18654 transitions. Second operand 4 states. [2020-10-15 04:42:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:57,855 INFO L93 Difference]: Finished difference Result 12119 states and 19245 transitions. [2020-10-15 04:42:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:57,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 367 [2020-10-15 04:42:57,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:57,871 INFO L225 Difference]: With dead ends: 12119 [2020-10-15 04:42:57,871 INFO L226 Difference]: Without dead ends: 12117 [2020-10-15 04:42:57,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12117 states. [2020-10-15 04:42:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12117 to 12117. [2020-10-15 04:42:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12117 states. [2020-10-15 04:42:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 19242 transitions. [2020-10-15 04:42:58,106 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 19242 transitions. Word has length 367 [2020-10-15 04:42:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:58,106 INFO L479 AbstractCegarLoop]: Abstraction has 12117 states and 19242 transitions. [2020-10-15 04:42:58,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 19242 transitions. [2020-10-15 04:42:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-15 04:42:58,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:58,118 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:58,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:42:58,119 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash -874191604, now seen corresponding path program 1 times [2020-10-15 04:42:58,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:58,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381968062] [2020-10-15 04:42:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:03,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-15 04:43:03,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:03,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:43:03,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:03,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 04:43:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 368 [2020-10-15 04:43:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:03,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 298 proven. 918 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-15 04:43:04,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381968062] [2020-10-15 04:43:04,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:04,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:43:04,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813472697] [2020-10-15 04:43:04,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:43:04,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:04,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:43:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:43:04,253 INFO L87 Difference]: Start difference. First operand 12117 states and 19242 transitions. Second operand 12 states. [2020-10-15 04:43:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:07,811 INFO L93 Difference]: Finished difference Result 35086 states and 55485 transitions. [2020-10-15 04:43:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:43:07,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 410 [2020-10-15 04:43:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:07,838 INFO L225 Difference]: With dead ends: 35086 [2020-10-15 04:43:07,838 INFO L226 Difference]: Without dead ends: 22988 [2020-10-15 04:43:07,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:43:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22988 states. [2020-10-15 04:43:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22988 to 21970. [2020-10-15 04:43:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21970 states. [2020-10-15 04:43:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21970 states to 21970 states and 34987 transitions. [2020-10-15 04:43:08,260 INFO L78 Accepts]: Start accepts. Automaton has 21970 states and 34987 transitions. Word has length 410 [2020-10-15 04:43:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:08,261 INFO L479 AbstractCegarLoop]: Abstraction has 21970 states and 34987 transitions. [2020-10-15 04:43:08,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:43:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 21970 states and 34987 transitions. [2020-10-15 04:43:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-15 04:43:08,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:08,289 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:08,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:43:08,290 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2048968394, now seen corresponding path program 1 times [2020-10-15 04:43:08,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:08,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062770227] [2020-10-15 04:43:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-15 04:43:13,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5217 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-15 04:43:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 32 proven. 1184 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-15 04:43:15,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062770227] [2020-10-15 04:43:15,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:15,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 04:43:15,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673208161] [2020-10-15 04:43:15,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:43:15,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:43:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:43:15,188 INFO L87 Difference]: Start difference. First operand 21970 states and 34987 transitions. Second operand 13 states. [2020-10-15 04:43:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:18,186 INFO L93 Difference]: Finished difference Result 36876 states and 57624 transitions. [2020-10-15 04:43:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:43:18,187 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 410 [2020-10-15 04:43:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:18,222 INFO L225 Difference]: With dead ends: 36876 [2020-10-15 04:43:18,222 INFO L226 Difference]: Without dead ends: 32061 [2020-10-15 04:43:18,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-15 04:43:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32061 states. [2020-10-15 04:43:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32061 to 26471. [2020-10-15 04:43:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26471 states. [2020-10-15 04:43:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26471 states to 26471 states and 42196 transitions. [2020-10-15 04:43:18,801 INFO L78 Accepts]: Start accepts. Automaton has 26471 states and 42196 transitions. Word has length 410 [2020-10-15 04:43:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:18,801 INFO L479 AbstractCegarLoop]: Abstraction has 26471 states and 42196 transitions. [2020-10-15 04:43:18,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 04:43:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 26471 states and 42196 transitions. [2020-10-15 04:43:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:18,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:18,825 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:18,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:43:18,825 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:18,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1677789256, now seen corresponding path program 1 times [2020-10-15 04:43:18,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:18,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498893833] [2020-10-15 04:43:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:23,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:23,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:23,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-15 04:43:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 1063 proven. 103 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-15 04:43:24,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498893833] [2020-10-15 04:43:24,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:24,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:24,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044264258] [2020-10-15 04:43:24,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:24,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:24,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:24,835 INFO L87 Difference]: Start difference. First operand 26471 states and 42196 transitions. Second operand 11 states. [2020-10-15 04:43:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:29,748 INFO L93 Difference]: Finished difference Result 85023 states and 135006 transitions. [2020-10-15 04:43:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 04:43:29,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 411 [2020-10-15 04:43:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:29,823 INFO L225 Difference]: With dead ends: 85023 [2020-10-15 04:43:29,823 INFO L226 Difference]: Without dead ends: 72617 [2020-10-15 04:43:29,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:43:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72617 states. [2020-10-15 04:43:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72617 to 40438. [2020-10-15 04:43:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40438 states. [2020-10-15 04:43:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40438 states to 40438 states and 64945 transitions. [2020-10-15 04:43:32,458 INFO L78 Accepts]: Start accepts. Automaton has 40438 states and 64945 transitions. Word has length 411 [2020-10-15 04:43:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:32,459 INFO L479 AbstractCegarLoop]: Abstraction has 40438 states and 64945 transitions. [2020-10-15 04:43:32,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 40438 states and 64945 transitions. [2020-10-15 04:43:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:32,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:32,492 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:32,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:43:32,493 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:32,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1670140154, now seen corresponding path program 1 times [2020-10-15 04:43:32,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:32,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281750777] [2020-10-15 04:43:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:37,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:37,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:43:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:37,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:37,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:37,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:37,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2020-10-15 04:43:37,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281750777] [2020-10-15 04:43:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:37,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870734823] [2020-10-15 04:43:37,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:37,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:37,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:37,838 INFO L87 Difference]: Start difference. First operand 40438 states and 64945 transitions. Second operand 5 states. [2020-10-15 04:43:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:39,572 INFO L93 Difference]: Finished difference Result 55324 states and 88477 transitions. [2020-10-15 04:43:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:39,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-15 04:43:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:39,617 INFO L225 Difference]: With dead ends: 55324 [2020-10-15 04:43:39,618 INFO L226 Difference]: Without dead ends: 42332 [2020-10-15 04:43:39,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42332 states. [2020-10-15 04:43:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42332 to 40438. [2020-10-15 04:43:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40438 states. [2020-10-15 04:43:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40438 states to 40438 states and 64919 transitions. [2020-10-15 04:43:40,706 INFO L78 Accepts]: Start accepts. Automaton has 40438 states and 64919 transitions. Word has length 411 [2020-10-15 04:43:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:40,706 INFO L479 AbstractCegarLoop]: Abstraction has 40438 states and 64919 transitions. [2020-10-15 04:43:40,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 40438 states and 64919 transitions. [2020-10-15 04:43:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:40,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:40,739 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:40,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:43:40,740 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2026899175, now seen corresponding path program 1 times [2020-10-15 04:43:40,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:40,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380819767] [2020-10-15 04:43:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:45,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:45,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-15 04:43:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:46,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 750 proven. 212 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-15 04:43:46,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380819767] [2020-10-15 04:43:46,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:46,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:46,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098891427] [2020-10-15 04:43:46,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:46,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:46,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:46,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:46,617 INFO L87 Difference]: Start difference. First operand 40438 states and 64919 transitions. Second operand 11 states. [2020-10-15 04:43:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:51,216 INFO L93 Difference]: Finished difference Result 78668 states and 124905 transitions. [2020-10-15 04:43:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:43:51,216 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 411 [2020-10-15 04:43:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:51,283 INFO L225 Difference]: With dead ends: 78668 [2020-10-15 04:43:51,283 INFO L226 Difference]: Without dead ends: 65676 [2020-10-15 04:43:51,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:43:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65676 states. [2020-10-15 04:43:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65676 to 53495. [2020-10-15 04:43:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53495 states. [2020-10-15 04:43:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53495 states to 53495 states and 86313 transitions. [2020-10-15 04:43:52,532 INFO L78 Accepts]: Start accepts. Automaton has 53495 states and 86313 transitions. Word has length 411 [2020-10-15 04:43:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:52,532 INFO L479 AbstractCegarLoop]: Abstraction has 53495 states and 86313 transitions. [2020-10-15 04:43:52,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 53495 states and 86313 transitions. [2020-10-15 04:43:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:43:52,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:52,579 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:52,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:43:52,579 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1965471676, now seen corresponding path program 1 times [2020-10-15 04:43:52,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:52,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875212002] [2020-10-15 04:43:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:43:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5286 [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:43:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:58,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-10-15 04:43:58,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875212002] [2020-10-15 04:43:58,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:58,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:58,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955586382] [2020-10-15 04:43:58,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:58,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:58,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:58,115 INFO L87 Difference]: Start difference. First operand 53495 states and 86313 transitions. Second operand 5 states. [2020-10-15 04:44:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:00,914 INFO L93 Difference]: Finished difference Result 110991 states and 177294 transitions. [2020-10-15 04:44:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:00,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-15 04:44:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:01,011 INFO L225 Difference]: With dead ends: 110991 [2020-10-15 04:44:01,012 INFO L226 Difference]: Without dead ends: 83659 [2020-10-15 04:44:01,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83659 states. [2020-10-15 04:44:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83659 to 66843. [2020-10-15 04:44:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66843 states. [2020-10-15 04:44:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66843 states to 66843 states and 110949 transitions. [2020-10-15 04:44:03,012 INFO L78 Accepts]: Start accepts. Automaton has 66843 states and 110949 transitions. Word has length 411 [2020-10-15 04:44:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:03,013 INFO L479 AbstractCegarLoop]: Abstraction has 66843 states and 110949 transitions. [2020-10-15 04:44:03,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66843 states and 110949 transitions. [2020-10-15 04:44:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:44:03,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:03,083 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:03,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:44:03,083 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1018433790, now seen corresponding path program 1 times [2020-10-15 04:44:03,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:03,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648881928] [2020-10-15 04:44:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:44:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:44:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:44:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:08,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-15 04:44:08,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648881928] [2020-10-15 04:44:08,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:08,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:08,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829604002] [2020-10-15 04:44:08,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:08,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:08,421 INFO L87 Difference]: Start difference. First operand 66843 states and 110949 transitions. Second operand 5 states. [2020-10-15 04:44:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:10,813 INFO L93 Difference]: Finished difference Result 101970 states and 168524 transitions. [2020-10-15 04:44:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:10,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-15 04:44:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:10,885 INFO L225 Difference]: With dead ends: 101970 [2020-10-15 04:44:10,885 INFO L226 Difference]: Without dead ends: 70137 [2020-10-15 04:44:10,906 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 [2020-10-15 04:44:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70137 states. [2020-10-15 04:44:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70137 to 67001. [2020-10-15 04:44:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67001 states. [2020-10-15 04:44:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67001 states to 67001 states and 111195 transitions. [2020-10-15 04:44:12,346 INFO L78 Accepts]: Start accepts. Automaton has 67001 states and 111195 transitions. Word has length 411 [2020-10-15 04:44:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:12,346 INFO L479 AbstractCegarLoop]: Abstraction has 67001 states and 111195 transitions. [2020-10-15 04:44:12,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 67001 states and 111195 transitions. [2020-10-15 04:44:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:44:12,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:12,412 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:12,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:44:12,412 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash -389577695, now seen corresponding path program 2 times [2020-10-15 04:44:12,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:12,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096186435] [2020-10-15 04:44:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:44:17,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-15 04:44:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:17,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:17,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:17,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:17,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:17,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 690 proven. 100 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-15 04:44:18,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096186435] [2020-10-15 04:44:18,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:18,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:44:18,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952939642] [2020-10-15 04:44:18,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:44:18,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:44:18,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:44:18,157 INFO L87 Difference]: Start difference. First operand 67001 states and 111195 transitions. Second operand 9 states. [2020-10-15 04:44:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:21,144 INFO L93 Difference]: Finished difference Result 134844 states and 223608 transitions. [2020-10-15 04:44:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:44:21,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 411 [2020-10-15 04:44:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:21,225 INFO L225 Difference]: With dead ends: 134844 [2020-10-15 04:44:21,225 INFO L226 Difference]: Without dead ends: 67862 [2020-10-15 04:44:21,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:44:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67862 states. [2020-10-15 04:44:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67862 to 67430. [2020-10-15 04:44:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67430 states. [2020-10-15 04:44:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67430 states to 67430 states and 111904 transitions. [2020-10-15 04:44:22,759 INFO L78 Accepts]: Start accepts. Automaton has 67430 states and 111904 transitions. Word has length 411 [2020-10-15 04:44:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:22,760 INFO L479 AbstractCegarLoop]: Abstraction has 67430 states and 111904 transitions. [2020-10-15 04:44:22,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:44:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 67430 states and 111904 transitions. [2020-10-15 04:44:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:44:22,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:22,825 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:22,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:44:22,825 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash 642300859, now seen corresponding path program 1 times [2020-10-15 04:44:22,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:22,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118032658] [2020-10-15 04:44:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking...