/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:34:15,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:34:15,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:34:15,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:34:15,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:34:15,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:34:15,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:34:15,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:34:15,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:34:15,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:34:15,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:34:15,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:34:15,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:34:15,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:34:15,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:34:15,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:34:15,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:34:15,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:34:15,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:34:15,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:34:15,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:34:15,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:34:15,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:34:15,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:34:15,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:34:15,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:34:15,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:34:15,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:34:15,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:34:15,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:34:15,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:34:15,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:34:15,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:34:15,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:34:15,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:34:15,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:34:15,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:34:15,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:34:15,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:34:15,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:34:15,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:34:15,988 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 [2020-10-13 15:34:16,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:34:16,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:34:16,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:34:16,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:34:16,012 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:34:16,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:34:16,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:34:16,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:34:16,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:34:16,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:34:16,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:34:16,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:34:16,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:34:16,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:34:16,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:34:16,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:34:16,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:34:16,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:34:16,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:34:16,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:34:16,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:34:16,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:34:16,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:34:16,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:34:16,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:34:16,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:34:16,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:34:16,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:34:16,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:34:16,017 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:34:16,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:34:16,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:34:16,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:34:16,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:34:16,358 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:34:16,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-13 15:34:16,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b77feec/6de5062d734f4f0e8b058d8461735765/FLAG61607c12e [2020-10-13 15:34:17,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:34:17,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-13 15:34:17,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b77feec/6de5062d734f4f0e8b058d8461735765/FLAG61607c12e [2020-10-13 15:34:17,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b77feec/6de5062d734f4f0e8b058d8461735765 [2020-10-13 15:34:17,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:34:17,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:34:17,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:34:17,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:34:17,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:34:17,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:34:17" (1/1) ... [2020-10-13 15:34:17,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2ce9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:17, skipping insertion in model container [2020-10-13 15:34:17,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:34:17" (1/1) ... [2020-10-13 15:34:17,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:34:17,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:34:17,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:34:17,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:34:18,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:34:18,290 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:34:18,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18 WrapperNode [2020-10-13 15:34:18,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:34:18,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:34:18,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:34:18,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:34:18,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (1/1) ... [2020-10-13 15:34:18,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:34:18,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:34:18,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:34:18,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:34:18,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (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 [2020-10-13 15:34:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:34:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:34:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:34:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:34:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:34:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:34:18,581 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:34:18,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:34:18,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:34:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:34:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:34:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:34:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:34:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:34:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:34:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:34:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:34:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:34:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:34:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:34:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:34:19,024 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:34:19,718 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:34:19,718 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:34:19,740 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:34:19,741 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:34:19,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:34:19 BoogieIcfgContainer [2020-10-13 15:34:19,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:34:19,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:34:19,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:34:19,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:34:19,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:34:17" (1/3) ... [2020-10-13 15:34:19,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcc7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:34:19, skipping insertion in model container [2020-10-13 15:34:19,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:34:18" (2/3) ... [2020-10-13 15:34:19,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcc7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:34:19, skipping insertion in model container [2020-10-13 15:34:19,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:34:19" (3/3) ... [2020-10-13 15:34:19,754 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2020-10-13 15:34:19,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:34:19,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:34:19,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:34:19,812 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:34:19,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:34:19,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:34:19,813 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:34:19,813 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:34:19,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:34:19,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:34:19,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:34:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:34:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 15:34:19,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:19,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:19,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:19,854 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-13 15:34:19,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:19,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768673119] [2020-10-13 15:34:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:21,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:34:21,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-10-13 15:34:21,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:34:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:34:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:34:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:21,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768673119] [2020-10-13 15:34:21,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:21,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:21,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697501817] [2020-10-13 15:34:21,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:21,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:21,993 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:34:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:23,317 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:34:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:23,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-13 15:34:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:23,333 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:34:23,333 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:34:23,338 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 [2020-10-13 15:34:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:34:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:34:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:34:23,397 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 41 [2020-10-13 15:34:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:23,397 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:34:23,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:34:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:34:23,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:23,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:23,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:34:23,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash -495950029, now seen corresponding path program 1 times [2020-10-13 15:34:23,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:23,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115268423] [2020-10-13 15:34:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:23,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 15:34:24,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-13 15:34:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:34:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:24,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:34:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:24,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115268423] [2020-10-13 15:34:24,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:24,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:24,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798806136] [2020-10-13 15:34:24,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:24,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:24,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:24,529 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:34:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:25,485 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:34:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:25,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 15:34:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:25,488 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:34:25,488 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:34:25,493 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 [2020-10-13 15:34:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:34:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:34:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:34:25,518 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-13 15:34:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:25,518 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:34:25,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:34:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:34:25,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:25,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:25,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:34:25,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:25,527 INFO L82 PathProgramCache]: Analyzing trace with hash -556125065, now seen corresponding path program 1 times [2020-10-13 15:34:25,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:25,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334297306] [2020-10-13 15:34:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:34:30,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:34:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:30,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:34:30,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:30,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334297306] [2020-10-13 15:34:30,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:30,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:30,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017966486] [2020-10-13 15:34:30,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:30,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:30,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:30,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:30,681 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:34:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:31,502 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:34:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:31,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:34:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:31,505 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:34:31,507 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:34:31,508 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 [2020-10-13 15:34:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:34:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:34:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:34:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:34:31,531 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 55 [2020-10-13 15:34:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:31,532 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:34:31,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:34:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:34:31,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:31,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:31,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:34:31,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash 309454091, now seen corresponding path program 1 times [2020-10-13 15:34:31,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:31,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652960887] [2020-10-13 15:34:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:34:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:34:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:34:36,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:34:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:34:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:34:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:36,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652960887] [2020-10-13 15:34:36,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:36,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:34:36,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481844594] [2020-10-13 15:34:36,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:34:36,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:34:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:36,772 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:34:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:37,652 INFO L93 Difference]: Finished difference Result 289 states and 439 transitions. [2020-10-13 15:34:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:34:37,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 15:34:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:37,654 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:34:37,654 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:34:37,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:34:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:34:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 15:34:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:34:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 241 transitions. [2020-10-13 15:34:37,664 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 241 transitions. Word has length 55 [2020-10-13 15:34:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:37,664 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 241 transitions. [2020-10-13 15:34:37,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:34:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 241 transitions. [2020-10-13 15:34:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:34:37,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:37,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:37,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:34:37,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:37,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1471564928, now seen corresponding path program 1 times [2020-10-13 15:34:37,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:37,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819707008] [2020-10-13 15:34:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:38,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:34:38,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-13 15:34:38,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:34:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:38,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:34:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:38,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819707008] [2020-10-13 15:34:38,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:38,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:38,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638668278] [2020-10-13 15:34:38,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:38,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:38,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:38,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:38,406 INFO L87 Difference]: Start difference. First operand 161 states and 241 transitions. Second operand 5 states. [2020-10-13 15:34:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:39,258 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-10-13 15:34:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:39,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:34:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:39,261 INFO L225 Difference]: With dead ends: 320 [2020-10-13 15:34:39,261 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 15:34:39,262 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 [2020-10-13 15:34:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 15:34:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2020-10-13 15:34:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:34:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 240 transitions. [2020-10-13 15:34:39,277 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 240 transitions. Word has length 55 [2020-10-13 15:34:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:39,278 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 240 transitions. [2020-10-13 15:34:39,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 240 transitions. [2020-10-13 15:34:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:34:39,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:39,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:39,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:34:39,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:39,282 INFO L82 PathProgramCache]: Analyzing trace with hash -171966527, now seen corresponding path program 1 times [2020-10-13 15:34:39,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:39,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27396458] [2020-10-13 15:34:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:34:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-13 15:34:39,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:34:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:34:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:39,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27396458] [2020-10-13 15:34:39,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:39,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:39,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573984424] [2020-10-13 15:34:39,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:39,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:39,900 INFO L87 Difference]: Start difference. First operand 161 states and 240 transitions. Second operand 5 states. [2020-10-13 15:34:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:40,552 INFO L93 Difference]: Finished difference Result 319 states and 475 transitions. [2020-10-13 15:34:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:40,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:34:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:40,554 INFO L225 Difference]: With dead ends: 319 [2020-10-13 15:34:40,555 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:34:40,556 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 [2020-10-13 15:34:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:34:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-13 15:34:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:34:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2020-10-13 15:34:40,567 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 55 [2020-10-13 15:34:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:40,567 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2020-10-13 15:34:40,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2020-10-13 15:34:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:34:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:40,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:40,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:34:40,569 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash -462148946, now seen corresponding path program 1 times [2020-10-13 15:34:40,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:40,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500427475] [2020-10-13 15:34:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:34:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:34:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:45,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:45,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:34:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:45,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500427475] [2020-10-13 15:34:45,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:45,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931198388] [2020-10-13 15:34:45,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:45,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:45,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:45,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:45,734 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand 5 states. [2020-10-13 15:34:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:46,482 INFO L93 Difference]: Finished difference Result 310 states and 463 transitions. [2020-10-13 15:34:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:46,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 15:34:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:46,485 INFO L225 Difference]: With dead ends: 310 [2020-10-13 15:34:46,485 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:34:46,486 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 [2020-10-13 15:34:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:34:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2020-10-13 15:34:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:34:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 238 transitions. [2020-10-13 15:34:46,494 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 238 transitions. Word has length 56 [2020-10-13 15:34:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:46,494 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 238 transitions. [2020-10-13 15:34:46,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 238 transitions. [2020-10-13 15:34:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:34:46,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:46,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:46,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:34:46,497 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:46,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1249075170, now seen corresponding path program 1 times [2020-10-13 15:34:46,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:46,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621856068] [2020-10-13 15:34:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:51,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:34:51,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:34:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:34:51,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:34:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:34:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:51,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:34:51,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:51,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621856068] [2020-10-13 15:34:51,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:51,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:34:51,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635308341] [2020-10-13 15:34:51,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:34:51,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:51,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:34:51,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:51,632 INFO L87 Difference]: Start difference. First operand 161 states and 238 transitions. Second operand 6 states. [2020-10-13 15:34:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:52,873 INFO L93 Difference]: Finished difference Result 424 states and 639 transitions. [2020-10-13 15:34:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:34:52,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 15:34:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:52,876 INFO L225 Difference]: With dead ends: 424 [2020-10-13 15:34:52,876 INFO L226 Difference]: Without dead ends: 288 [2020-10-13 15:34:52,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:34:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-13 15:34:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 178. [2020-10-13 15:34:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:34:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2020-10-13 15:34:52,889 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 56 [2020-10-13 15:34:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:52,891 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2020-10-13 15:34:52,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:34:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2020-10-13 15:34:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:34:52,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:52,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:52,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:34:52,893 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1531915781, now seen corresponding path program 1 times [2020-10-13 15:34:52,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:52,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134708327] [2020-10-13 15:34:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:34:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:34:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:34:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:57,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134708327] [2020-10-13 15:34:57,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:57,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:57,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898413700] [2020-10-13 15:34:57,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:57,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:57,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:57,999 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand 5 states. [2020-10-13 15:34:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:58,613 INFO L93 Difference]: Finished difference Result 344 states and 516 transitions. [2020-10-13 15:34:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:58,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 15:34:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:58,616 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:34:58,617 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:34:58,618 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 [2020-10-13 15:34:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:34:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:34:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:34:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:34:58,624 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:34:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:58,625 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:34:58,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:34:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:34:58,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:58,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:58,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:34:58,626 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:58,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1657674672, now seen corresponding path program 1 times [2020-10-13 15:34:58,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:58,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965391910] [2020-10-13 15:34:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:35:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:35:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:35:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:35:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:03,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:03,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965391910] [2020-10-13 15:35:03,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:03,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:03,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730856396] [2020-10-13 15:35:03,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:03,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:03,741 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 6 states. [2020-10-13 15:35:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:04,471 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2020-10-13 15:35:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:35:04,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 15:35:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:04,473 INFO L225 Difference]: With dead ends: 350 [2020-10-13 15:35:04,473 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:35:04,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:35:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:35:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-10-13 15:35:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:35:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:35:04,482 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:35:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:04,482 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:35:04,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:35:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:35:04,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:04,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:04,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:35:04,484 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1616983895, now seen corresponding path program 1 times [2020-10-13 15:35:04,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:04,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059290097] [2020-10-13 15:35:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3516 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:08,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059290097] [2020-10-13 15:35:08,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:08,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:08,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745629057] [2020-10-13 15:35:08,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:08,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:08,087 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 5 states. [2020-10-13 15:35:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:08,720 INFO L93 Difference]: Finished difference Result 344 states and 515 transitions. [2020-10-13 15:35:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:08,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:35:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:08,723 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:35:08,723 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:35:08,724 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 [2020-10-13 15:35:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:35:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:35:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:35:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2020-10-13 15:35:08,731 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 58 [2020-10-13 15:35:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:08,731 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2020-10-13 15:35:08,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2020-10-13 15:35:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:35:08,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:08,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:08,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:35:08,733 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-13 15:35:08,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:08,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041739646] [2020-10-13 15:35:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:35:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:09,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:09,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041739646] [2020-10-13 15:35:09,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:09,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:09,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347541625] [2020-10-13 15:35:09,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:09,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:09,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:09,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:09,145 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand 5 states. [2020-10-13 15:35:09,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:09,789 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:35:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:09,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:35:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:09,792 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:35:09,792 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 15:35:09,793 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 [2020-10-13 15:35:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 15:35:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-13 15:35:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 15:35:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2020-10-13 15:35:09,801 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 58 [2020-10-13 15:35:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:09,802 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2020-10-13 15:35:09,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2020-10-13 15:35:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:35:09,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:09,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:09,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:35:09,803 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1254155939, now seen corresponding path program 1 times [2020-10-13 15:35:09,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:09,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366722449] [2020-10-13 15:35:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:35:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:14,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366722449] [2020-10-13 15:35:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:14,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271326646] [2020-10-13 15:35:14,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:14,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:14,901 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2020-10-13 15:35:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:16,092 INFO L93 Difference]: Finished difference Result 485 states and 740 transitions. [2020-10-13 15:35:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:35:16,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 15:35:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:16,095 INFO L225 Difference]: With dead ends: 485 [2020-10-13 15:35:16,095 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:35:16,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:35:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:35:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2020-10-13 15:35:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:35:16,105 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 58 [2020-10-13 15:35:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:16,105 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:35:16,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:35:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:35:16,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:16,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:16,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:35:16,107 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1241162730, now seen corresponding path program 1 times [2020-10-13 15:35:16,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:16,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571769754] [2020-10-13 15:35:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3216 [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:19,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:19,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:19,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:19,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571769754] [2020-10-13 15:35:19,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:19,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:19,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74949078] [2020-10-13 15:35:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:19,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:19,420 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:35:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:19,997 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:35:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:19,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:35:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:20,000 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:35:20,000 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:35:20,001 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 [2020-10-13 15:35:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:35:20,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:35:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:35:20,016 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 59 [2020-10-13 15:35:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:20,016 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:35:20,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:35:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:35:20,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:20,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:20,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:35:20,018 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:20,018 INFO L82 PathProgramCache]: Analyzing trace with hash 740008964, now seen corresponding path program 1 times [2020-10-13 15:35:20,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:20,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067432451] [2020-10-13 15:35:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:35:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-13 15:35:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:20,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067432451] [2020-10-13 15:35:20,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:20,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:20,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846010054] [2020-10-13 15:35:20,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:20,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:20,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:20,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:20,523 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:35:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:21,118 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-13 15:35:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:21,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:35:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:21,120 INFO L225 Difference]: With dead ends: 397 [2020-10-13 15:35:21,120 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:35:21,121 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 [2020-10-13 15:35:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:35:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2020-10-13 15:35:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:35:21,129 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 71 [2020-10-13 15:35:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:21,129 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:35:21,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:35:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:35:21,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:21,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:21,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:35:21,131 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:21,132 INFO L82 PathProgramCache]: Analyzing trace with hash -896101946, now seen corresponding path program 1 times [2020-10-13 15:35:21,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:21,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749265871] [2020-10-13 15:35:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:26,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:35:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:35:26,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:35:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:26,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:26,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:26,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749265871] [2020-10-13 15:35:26,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:26,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:26,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53426180] [2020-10-13 15:35:26,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:26,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:26,222 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:35:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:26,797 INFO L93 Difference]: Finished difference Result 387 states and 579 transitions. [2020-10-13 15:35:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:26,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:35:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:26,800 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:35:26,800 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:35:26,804 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 [2020-10-13 15:35:26,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:35:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 196. [2020-10-13 15:35:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:35:26,811 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 72 [2020-10-13 15:35:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:26,812 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:35:26,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:35:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:35:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:26,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:26,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:35:26,814 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:26,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1131588047, now seen corresponding path program 1 times [2020-10-13 15:35:26,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:26,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375809466] [2020-10-13 15:35:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:27,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:27,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:35:27,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-13 15:35:27,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:27,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375809466] [2020-10-13 15:35:27,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:27,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:27,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058638247] [2020-10-13 15:35:27,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:27,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:27,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:27,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:27,299 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:35:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:27,920 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:35:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:27,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:35:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:27,923 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:35:27,923 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:35:27,925 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 [2020-10-13 15:35:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:35:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:35:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:35:27,935 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 72 [2020-10-13 15:35:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:27,935 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:35:27,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:35:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:35:27,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:27,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:27,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:35:27,938 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:27,938 INFO L82 PathProgramCache]: Analyzing trace with hash -511943408, now seen corresponding path program 1 times [2020-10-13 15:35:27,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:27,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164227048] [2020-10-13 15:35:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:35:28,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-13 15:35:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:28,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164227048] [2020-10-13 15:35:28,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:28,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:28,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574989006] [2020-10-13 15:35:28,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:28,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:28,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:28,660 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:35:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:29,270 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:35:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:29,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:35:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:29,273 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:35:29,273 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:35:29,274 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 [2020-10-13 15:35:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:35:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:35:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:35:29,285 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 72 [2020-10-13 15:35:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:29,285 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:35:29,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:35:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:35:29,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:29,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:29,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:35:29,290 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1883469631, now seen corresponding path program 1 times [2020-10-13 15:35:29,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:29,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409090152] [2020-10-13 15:35:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:35:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:34,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409090152] [2020-10-13 15:35:34,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:34,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:34,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479177445] [2020-10-13 15:35:34,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:34,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:34,361 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:35:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:34,924 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:35:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:34,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 15:35:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:34,926 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:35:34,927 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:35:34,927 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 [2020-10-13 15:35:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:35:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:35:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:35:34,934 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 73 [2020-10-13 15:35:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:34,934 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:35:34,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:35:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 15:35:34,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:34,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:34,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:35:34,936 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:34,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1832183926, now seen corresponding path program 1 times [2020-10-13 15:35:34,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:34,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547914495] [2020-10-13 15:35:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:40,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:40,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547914495] [2020-10-13 15:35:40,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:40,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:40,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474081299] [2020-10-13 15:35:40,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:40,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:40,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:40,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:40,019 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:35:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:40,687 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:35:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:40,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 15:35:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:40,689 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:35:40,689 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:35:40,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:35:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:35:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:35:40,699 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 74 [2020-10-13 15:35:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:40,699 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:35:40,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:35:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:35:40,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:40,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:40,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:35:40,701 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1959605498, now seen corresponding path program 1 times [2020-10-13 15:35:40,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:40,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904006530] [2020-10-13 15:35:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:45,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904006530] [2020-10-13 15:35:45,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:45,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:45,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055163795] [2020-10-13 15:35:45,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:45,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:45,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:45,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:45,802 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:35:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:46,342 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:35:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:46,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-13 15:35:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:46,344 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:35:46,345 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:35:46,345 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 [2020-10-13 15:35:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:35:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:35:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:35:46,352 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 75 [2020-10-13 15:35:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:46,353 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:35:46,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:35:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:35:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:46,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:46,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:35:46,354 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2036041243, now seen corresponding path program 1 times [2020-10-13 15:35:46,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:46,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869185290] [2020-10-13 15:35:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:35:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:51,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869185290] [2020-10-13 15:35:51,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:51,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:51,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507685622] [2020-10-13 15:35:51,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:51,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:51,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:51,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:51,430 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:35:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:51,979 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:35:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:51,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 15:35:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:51,983 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:35:51,983 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:35:51,984 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 [2020-10-13 15:35:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:35:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:35:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:35:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:35:51,991 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 76 [2020-10-13 15:35:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:51,991 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:35:51,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:35:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:35:51,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:51,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:51,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:35:51,993 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-13 15:35:51,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:51,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902031728] [2020-10-13 15:35:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:52,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:35:52,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 15:35:52,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:35:52,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:52,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902031728] [2020-10-13 15:35:52,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:52,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:52,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764087947] [2020-10-13 15:35:52,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:52,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:52,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:52,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:52,259 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 5 states. [2020-10-13 15:35:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:53,023 INFO L93 Difference]: Finished difference Result 480 states and 711 transitions. [2020-10-13 15:35:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:53,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:35:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:53,026 INFO L225 Difference]: With dead ends: 480 [2020-10-13 15:35:53,027 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:35:53,027 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 [2020-10-13 15:35:53,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:35:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 225. [2020-10-13 15:35:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 15:35:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-13 15:35:53,038 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 80 [2020-10-13 15:35:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:53,038 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-13 15:35:53,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-13 15:35:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:35:53,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:53,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:53,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:35:53,042 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:53,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1537721727, now seen corresponding path program 1 times [2020-10-13 15:35:53,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:53,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4380152] [2020-10-13 15:35:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:35:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:53,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:53,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:53,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4380152] [2020-10-13 15:35:53,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:53,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:53,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609496698] [2020-10-13 15:35:53,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:53,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:53,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:53,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:53,674 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 5 states. [2020-10-13 15:35:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:54,430 INFO L93 Difference]: Finished difference Result 484 states and 730 transitions. [2020-10-13 15:35:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:54,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:35:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:54,433 INFO L225 Difference]: With dead ends: 484 [2020-10-13 15:35:54,433 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:35:54,434 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 [2020-10-13 15:35:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:35:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-13 15:35:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:35:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 377 transitions. [2020-10-13 15:35:54,443 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 377 transitions. Word has length 80 [2020-10-13 15:35:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:54,443 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 377 transitions. [2020-10-13 15:35:54,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 377 transitions. [2020-10-13 15:35:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:35:54,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:54,444 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] [2020-10-13 15:35:54,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:35:54,445 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1894533686, now seen corresponding path program 1 times [2020-10-13 15:35:54,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:54,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416671522] [2020-10-13 15:35:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:35:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:54,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:54,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416671522] [2020-10-13 15:35:54,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:54,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:54,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744512714] [2020-10-13 15:35:54,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:54,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:54,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:54,742 INFO L87 Difference]: Start difference. First operand 249 states and 377 transitions. Second operand 5 states. [2020-10-13 15:35:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:55,519 INFO L93 Difference]: Finished difference Result 549 states and 832 transitions. [2020-10-13 15:35:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:55,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:35:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:55,521 INFO L225 Difference]: With dead ends: 549 [2020-10-13 15:35:55,521 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 15:35:55,522 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 [2020-10-13 15:35:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 15:35:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 250. [2020-10-13 15:35:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:35:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-13 15:35:55,530 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 81 [2020-10-13 15:35:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:55,531 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-13 15:35:55,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-13 15:35:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:35:55,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:55,532 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] [2020-10-13 15:35:55,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:35:55,533 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash 839608221, now seen corresponding path program 1 times [2020-10-13 15:35:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:55,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440979800] [2020-10-13 15:35:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:55,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:35:55,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-13 15:35:55,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:35:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:55,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:55,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:55,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440979800] [2020-10-13 15:35:55,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:55,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:55,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813881334] [2020-10-13 15:35:55,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:55,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:55,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:55,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:56,000 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 5 states. [2020-10-13 15:35:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:56,796 INFO L93 Difference]: Finished difference Result 550 states and 832 transitions. [2020-10-13 15:35:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:56,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:35:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:56,799 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:35:56,799 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 15:35:56,800 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 [2020-10-13 15:35:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 15:35:56,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 260. [2020-10-13 15:35:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 15:35:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-13 15:35:56,809 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 86 [2020-10-13 15:35:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:56,809 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-13 15:35:56,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-13 15:35:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:35:56,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:56,810 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] [2020-10-13 15:35:56,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:35:56,811 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash 251043747, now seen corresponding path program 1 times [2020-10-13 15:35:56,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:56,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786423573] [2020-10-13 15:35:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:35:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 15:35:57,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:35:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:57,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786423573] [2020-10-13 15:35:57,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:57,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:57,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268346058] [2020-10-13 15:35:57,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:57,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:57,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:57,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:57,103 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-13 15:35:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:57,845 INFO L93 Difference]: Finished difference Result 554 states and 843 transitions. [2020-10-13 15:35:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:57,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:35:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:57,854 INFO L225 Difference]: With dead ends: 554 [2020-10-13 15:35:57,854 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:35:57,855 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 [2020-10-13 15:35:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:35:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 261. [2020-10-13 15:35:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:35:57,864 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 87 [2020-10-13 15:35:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:57,864 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:35:57,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:35:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:35:57,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:57,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:57,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:35:57,866 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:57,866 INFO L82 PathProgramCache]: Analyzing trace with hash -812579729, now seen corresponding path program 1 times [2020-10-13 15:35:57,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:57,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969038833] [2020-10-13 15:35:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:58,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969038833] [2020-10-13 15:35:58,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:58,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:58,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396275656] [2020-10-13 15:35:58,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:58,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:58,659 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:35:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:59,419 INFO L93 Difference]: Finished difference Result 555 states and 843 transitions. [2020-10-13 15:35:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:59,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:35:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:59,422 INFO L225 Difference]: With dead ends: 555 [2020-10-13 15:35:59,422 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:35:59,423 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 [2020-10-13 15:35:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:35:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 261. [2020-10-13 15:35:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:35:59,431 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 93 [2020-10-13 15:35:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:59,431 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:35:59,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:35:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:35:59,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:59,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:59,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:35:59,434 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1115692973, now seen corresponding path program 1 times [2020-10-13 15:35:59,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:59,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108018806] [2020-10-13 15:35:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:00,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108018806] [2020-10-13 15:36:00,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:00,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:00,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674330516] [2020-10-13 15:36:00,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:00,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:00,230 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:36:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:00,942 INFO L93 Difference]: Finished difference Result 532 states and 811 transitions. [2020-10-13 15:36:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:00,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:36:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:00,945 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:36:00,945 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:36:00,946 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 [2020-10-13 15:36:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:36:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:36:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:36:00,953 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 93 [2020-10-13 15:36:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:00,954 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:36:00,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:36:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:00,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:00,955 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:00,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:36:00,956 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:00,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1781711173, now seen corresponding path program 1 times [2020-10-13 15:36:00,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:00,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517871237] [2020-10-13 15:36:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:06,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:06,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517871237] [2020-10-13 15:36:06,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:06,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:06,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094694936] [2020-10-13 15:36:06,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:06,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:06,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:06,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:06,050 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:36:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:06,793 INFO L93 Difference]: Finished difference Result 545 states and 826 transitions. [2020-10-13 15:36:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:06,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:06,797 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:36:06,797 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:36:06,799 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 [2020-10-13 15:36:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:36:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:36:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:36:06,806 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 94 [2020-10-13 15:36:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:06,806 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:36:06,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:36:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:06,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:06,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:06,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:36:06,808 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 245978820, now seen corresponding path program 1 times [2020-10-13 15:36:06,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:06,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765000414] [2020-10-13 15:36:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:07,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765000414] [2020-10-13 15:36:07,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:07,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:07,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377803493] [2020-10-13 15:36:07,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:07,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:07,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:07,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:07,624 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:36:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:08,353 INFO L93 Difference]: Finished difference Result 543 states and 822 transitions. [2020-10-13 15:36:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:08,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:08,356 INFO L225 Difference]: With dead ends: 543 [2020-10-13 15:36:08,356 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 15:36:08,357 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 [2020-10-13 15:36:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 15:36:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 261. [2020-10-13 15:36:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:36:08,364 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 94 [2020-10-13 15:36:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:08,364 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:36:08,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:36:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:08,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:08,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:08,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:36:08,366 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1397552635, now seen corresponding path program 1 times [2020-10-13 15:36:08,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:08,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538240036] [2020-10-13 15:36:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-13 15:36:09,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:09,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:09,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:09,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538240036] [2020-10-13 15:36:09,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:09,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:09,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601836301] [2020-10-13 15:36:09,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:09,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:09,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:09,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:09,159 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:36:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:09,907 INFO L93 Difference]: Finished difference Result 542 states and 819 transitions. [2020-10-13 15:36:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:09,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:09,910 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:36:09,910 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:36:09,911 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 [2020-10-13 15:36:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:36:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:36:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:36:09,919 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 94 [2020-10-13 15:36:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:09,920 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:36:09,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:36:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:09,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:09,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:09,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:36:09,922 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash -2134799555, now seen corresponding path program 1 times [2020-10-13 15:36:09,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:09,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013672873] [2020-10-13 15:36:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:14,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:15,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013672873] [2020-10-13 15:36:15,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:15,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:15,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962613281] [2020-10-13 15:36:15,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:15,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:15,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:15,029 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:36:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:15,709 INFO L93 Difference]: Finished difference Result 522 states and 790 transitions. [2020-10-13 15:36:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:15,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:15,712 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:36:15,712 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:36:15,713 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 [2020-10-13 15:36:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:36:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:36:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:36:15,720 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 94 [2020-10-13 15:36:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:15,721 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:36:15,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:36:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:15,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:15,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:15,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:36:15,723 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash -107109562, now seen corresponding path program 1 times [2020-10-13 15:36:15,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:15,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102484543] [2020-10-13 15:36:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:16,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-13 15:36:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:16,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:16,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102484543] [2020-10-13 15:36:16,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:16,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:16,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212973536] [2020-10-13 15:36:16,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:16,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:16,469 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:36:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:17,159 INFO L93 Difference]: Finished difference Result 520 states and 786 transitions. [2020-10-13 15:36:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:17,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:17,161 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:36:17,161 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:36:17,162 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 [2020-10-13 15:36:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:36:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:36:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:36:17,168 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 94 [2020-10-13 15:36:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:17,169 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:36:17,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:36:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:36:17,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:17,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:17,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:36:17,170 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:17,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1750641017, now seen corresponding path program 1 times [2020-10-13 15:36:17,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:17,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338802280] [2020-10-13 15:36:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:17,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338802280] [2020-10-13 15:36:17,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:17,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:17,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65019336] [2020-10-13 15:36:17,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:17,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:17,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:17,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:17,811 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:36:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:18,493 INFO L93 Difference]: Finished difference Result 519 states and 783 transitions. [2020-10-13 15:36:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:18,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:36:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:18,495 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:36:18,495 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:36:18,496 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 [2020-10-13 15:36:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:36:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:36:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:36:18,502 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 94 [2020-10-13 15:36:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:18,503 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:36:18,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:36:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:36:18,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:18,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:18,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:36:18,505 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash 199387370, now seen corresponding path program 1 times [2020-10-13 15:36:18,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:18,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266568875] [2020-10-13 15:36:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:23,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:23,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:23,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266568875] [2020-10-13 15:36:23,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:23,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:23,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753913218] [2020-10-13 15:36:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:23,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:23,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:23,594 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:36:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:24,376 INFO L93 Difference]: Finished difference Result 542 states and 811 transitions. [2020-10-13 15:36:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:24,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:36:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:24,378 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:36:24,378 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:36:24,379 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 [2020-10-13 15:36:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:36:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:36:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:36:24,387 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 95 [2020-10-13 15:36:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:24,387 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:36:24,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:36:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:36:24,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:24,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:24,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:36:24,389 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2138549416, now seen corresponding path program 1 times [2020-10-13 15:36:24,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:24,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180703858] [2020-10-13 15:36:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:36:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:36:29,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:29,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:29,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180703858] [2020-10-13 15:36:29,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:29,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:29,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560659194] [2020-10-13 15:36:29,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:29,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:29,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:29,495 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:36:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:30,211 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2020-10-13 15:36:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:30,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:36:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:30,213 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:36:30,213 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:36:30,214 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 [2020-10-13 15:36:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:36:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:36:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:36:30,223 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 95 [2020-10-13 15:36:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:30,223 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:36:30,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:36:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:36:30,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:30,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:30,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:36:30,225 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1795840831, now seen corresponding path program 1 times [2020-10-13 15:36:30,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:30,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432694950] [2020-10-13 15:36:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:35,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:36:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:36:35,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:35,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:35,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432694950] [2020-10-13 15:36:35,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:35,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:35,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914944929] [2020-10-13 15:36:35,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:35,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:35,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:35,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:35,323 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:36:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:36,098 INFO L93 Difference]: Finished difference Result 542 states and 807 transitions. [2020-10-13 15:36:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:36,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:36:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:36,101 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:36:36,101 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:36:36,102 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 [2020-10-13 15:36:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:36:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:36:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:36:36,108 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 96 [2020-10-13 15:36:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:36,109 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:36:36,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:36:36,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:36:36,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:36,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:36,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:36:36,111 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:36,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:36,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1780322113, now seen corresponding path program 1 times [2020-10-13 15:36:36,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:36,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522351231] [2020-10-13 15:36:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:36:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:36:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:41,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:41,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:41,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522351231] [2020-10-13 15:36:41,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:41,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:41,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359994387] [2020-10-13 15:36:41,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:41,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:41,218 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:36:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:41,946 INFO L93 Difference]: Finished difference Result 519 states and 775 transitions. [2020-10-13 15:36:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:41,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:36:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:41,949 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:36:41,949 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:36:41,950 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 [2020-10-13 15:36:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:36:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:36:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:36:41,958 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 96 [2020-10-13 15:36:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:41,958 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:36:41,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:36:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:36:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:41,959 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:41,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:36:41,960 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:41,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1535744027, now seen corresponding path program 1 times [2020-10-13 15:36:41,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:41,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283842866] [2020-10-13 15:36:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:46,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:36:46,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:47,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:47,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:47,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:47,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:47,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283842866] [2020-10-13 15:36:47,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:47,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:47,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822209045] [2020-10-13 15:36:47,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:47,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:47,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:47,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:47,061 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:36:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:47,844 INFO L93 Difference]: Finished difference Result 542 states and 803 transitions. [2020-10-13 15:36:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:47,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:36:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:47,846 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:36:47,846 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:36:47,847 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 [2020-10-13 15:36:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:36:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:36:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:36:47,855 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 97 [2020-10-13 15:36:47,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:47,855 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:36:47,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:47,855 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:36:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:36:47,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:47,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:47,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:36:47,857 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:47,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2016824285, now seen corresponding path program 1 times [2020-10-13 15:36:47,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:47,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355023387] [2020-10-13 15:36:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:52,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:52,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:52,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355023387] [2020-10-13 15:36:52,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:52,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:52,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364088798] [2020-10-13 15:36:52,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:52,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:52,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:52,947 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:36:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:53,641 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-13 15:36:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:53,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:36:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:53,643 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:36:53,643 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:36:53,644 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 [2020-10-13 15:36:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:36:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:36:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:36:53,649 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 97 [2020-10-13 15:36:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:53,650 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:36:53,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:36:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:36:53,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:53,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:53,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:36:53,651 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1277273178, now seen corresponding path program 1 times [2020-10-13 15:36:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599404564] [2020-10-13 15:36:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:58,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:58,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599404564] [2020-10-13 15:36:58,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:58,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:58,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131481497] [2020-10-13 15:36:58,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:58,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:58,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:58,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:58,745 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:36:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:59,475 INFO L93 Difference]: Finished difference Result 532 states and 787 transitions. [2020-10-13 15:36:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:59,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:36:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:59,478 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:36:59,478 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:36:59,479 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 [2020-10-13 15:36:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:36:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:36:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:36:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2020-10-13 15:36:59,485 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 98 [2020-10-13 15:36:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:59,485 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2020-10-13 15:36:59,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2020-10-13 15:36:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:36:59,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:59,487 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:59,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:36:59,487 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash -751312932, now seen corresponding path program 1 times [2020-10-13 15:36:59,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:59,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668915833] [2020-10-13 15:36:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:37:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:37:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:37:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:04,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:04,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668915833] [2020-10-13 15:37:04,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:04,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:04,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441007814] [2020-10-13 15:37:04,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:04,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:04,588 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand 5 states. [2020-10-13 15:37:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:05,220 INFO L93 Difference]: Finished difference Result 509 states and 755 transitions. [2020-10-13 15:37:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:05,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:37:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:05,223 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:37:05,223 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:37:05,224 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 [2020-10-13 15:37:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:37:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:37:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 382 transitions. [2020-10-13 15:37:05,232 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 382 transitions. Word has length 98 [2020-10-13 15:37:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:05,232 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 382 transitions. [2020-10-13 15:37:05,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:05,233 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 382 transitions. [2020-10-13 15:37:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:37:05,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:05,234 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] [2020-10-13 15:37:05,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:37:05,234 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1487890754, now seen corresponding path program 1 times [2020-10-13 15:37:05,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:05,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58496570] [2020-10-13 15:37:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:37:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:06,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58496570] [2020-10-13 15:37:06,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:06,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:06,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796186828] [2020-10-13 15:37:06,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:06,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:06,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:06,413 INFO L87 Difference]: Start difference. First operand 261 states and 382 transitions. Second operand 5 states. [2020-10-13 15:37:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:07,152 INFO L93 Difference]: Finished difference Result 532 states and 783 transitions. [2020-10-13 15:37:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:07,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:37:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:07,155 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:37:07,155 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:37:07,156 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 [2020-10-13 15:37:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:37:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:37:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2020-10-13 15:37:07,162 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 102 [2020-10-13 15:37:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:07,163 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2020-10-13 15:37:07,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2020-10-13 15:37:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:37:07,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:07,164 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] [2020-10-13 15:37:07,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:37:07,164 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:07,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1420291132, now seen corresponding path program 1 times [2020-10-13 15:37:07,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:07,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265416050] [2020-10-13 15:37:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:37:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-13 15:37:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:37:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:07,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:07,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:07,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:07,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265416050] [2020-10-13 15:37:07,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:07,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:07,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017655098] [2020-10-13 15:37:07,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:07,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:07,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:07,584 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand 5 states. [2020-10-13 15:37:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:08,268 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2020-10-13 15:37:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:08,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:37:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:08,270 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:37:08,270 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:37:08,271 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 [2020-10-13 15:37:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:37:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 287. [2020-10-13 15:37:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:37:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:37:08,278 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 102 [2020-10-13 15:37:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:08,278 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:37:08,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:37:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:37:08,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:08,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:08,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:37:08,279 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2050834932, now seen corresponding path program 1 times [2020-10-13 15:37:08,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:08,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445467780] [2020-10-13 15:37:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:37:08,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-13 15:37:08,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:37:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:09,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445467780] [2020-10-13 15:37:09,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:09,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:09,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647514351] [2020-10-13 15:37:09,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:09,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:09,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:09,054 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:37:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:09,999 INFO L93 Difference]: Finished difference Result 661 states and 996 transitions. [2020-10-13 15:37:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:37:10,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,005 INFO L225 Difference]: With dead ends: 661 [2020-10-13 15:37:10,005 INFO L226 Difference]: Without dead ends: 399 [2020-10-13 15:37:10,006 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 [2020-10-13 15:37:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-13 15:37:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 315. [2020-10-13 15:37:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:37:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 477 transitions. [2020-10-13 15:37:10,012 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 477 transitions. Word has length 107 [2020-10-13 15:37:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,013 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 477 transitions. [2020-10-13 15:37:10,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 477 transitions. [2020-10-13 15:37:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:37:10,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:10,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:37:10,014 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1073573527, now seen corresponding path program 1 times [2020-10-13 15:37:10,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456155174] [2020-10-13 15:37:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:37:12,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:12,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:12,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456155174] [2020-10-13 15:37:12,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:12,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:12,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084118065] [2020-10-13 15:37:12,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:12,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:12,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:12,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:12,429 INFO L87 Difference]: Start difference. First operand 315 states and 477 transitions. Second operand 5 states. [2020-10-13 15:37:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:13,162 INFO L93 Difference]: Finished difference Result 640 states and 973 transitions. [2020-10-13 15:37:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:13,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:37:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:13,164 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:37:13,164 INFO L226 Difference]: Without dead ends: 350 [2020-10-13 15:37:13,165 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 [2020-10-13 15:37:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-13 15:37:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2020-10-13 15:37:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:37:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 476 transitions. [2020-10-13 15:37:13,171 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 476 transitions. Word has length 108 [2020-10-13 15:37:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:13,171 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 476 transitions. [2020-10-13 15:37:13,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 476 transitions. [2020-10-13 15:37:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:37:13,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:13,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:13,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:37:13,173 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1429810141, now seen corresponding path program 1 times [2020-10-13 15:37:13,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:13,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282719337] [2020-10-13 15:37:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:13,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282719337] [2020-10-13 15:37:13,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:13,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:13,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606963511] [2020-10-13 15:37:13,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:13,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:13,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:13,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:13,933 INFO L87 Difference]: Start difference. First operand 315 states and 476 transitions. Second operand 5 states. [2020-10-13 15:37:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:14,808 INFO L93 Difference]: Finished difference Result 681 states and 1030 transitions. [2020-10-13 15:37:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:14,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:37:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:14,818 INFO L225 Difference]: With dead ends: 681 [2020-10-13 15:37:14,818 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 15:37:14,819 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 [2020-10-13 15:37:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 15:37:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 316. [2020-10-13 15:37:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:37:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 477 transitions. [2020-10-13 15:37:14,826 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 477 transitions. Word has length 108 [2020-10-13 15:37:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:14,826 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 477 transitions. [2020-10-13 15:37:14,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 477 transitions. [2020-10-13 15:37:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:37:14,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:14,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:14,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:37:14,828 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:14,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1792123586, now seen corresponding path program 1 times [2020-10-13 15:37:14,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:14,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982225264] [2020-10-13 15:37:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:17,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:37:17,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2329 [2020-10-13 15:37:17,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:17,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:17,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:17,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982225264] [2020-10-13 15:37:17,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:17,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:17,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356616968] [2020-10-13 15:37:17,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:17,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:17,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:17,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:17,243 INFO L87 Difference]: Start difference. First operand 316 states and 477 transitions. Second operand 5 states. [2020-10-13 15:37:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:17,965 INFO L93 Difference]: Finished difference Result 640 states and 970 transitions. [2020-10-13 15:37:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:17,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:37:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:17,967 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:37:17,968 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 15:37:17,968 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 [2020-10-13 15:37:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 15:37:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 316. [2020-10-13 15:37:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:37:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 476 transitions. [2020-10-13 15:37:17,975 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 476 transitions. Word has length 109 [2020-10-13 15:37:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:17,975 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 476 transitions. [2020-10-13 15:37:17,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 476 transitions. [2020-10-13 15:37:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:37:17,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:17,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:17,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:37:17,977 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash -856836182, now seen corresponding path program 1 times [2020-10-13 15:37:17,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:17,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839068307] [2020-10-13 15:37:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:37:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:18,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839068307] [2020-10-13 15:37:18,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:18,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:18,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964284785] [2020-10-13 15:37:18,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:18,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:18,409 INFO L87 Difference]: Start difference. First operand 316 states and 476 transitions. Second operand 5 states. [2020-10-13 15:37:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:19,136 INFO L93 Difference]: Finished difference Result 637 states and 964 transitions. [2020-10-13 15:37:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:19,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:37:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:19,140 INFO L225 Difference]: With dead ends: 637 [2020-10-13 15:37:19,140 INFO L226 Difference]: Without dead ends: 346 [2020-10-13 15:37:19,141 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 [2020-10-13 15:37:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-13 15:37:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 316. [2020-10-13 15:37:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:37:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 475 transitions. [2020-10-13 15:37:19,146 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 475 transitions. Word has length 109 [2020-10-13 15:37:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:19,147 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 475 transitions. [2020-10-13 15:37:19,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 475 transitions. [2020-10-13 15:37:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:37:19,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:19,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:19,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:37:19,149 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash 892244443, now seen corresponding path program 1 times [2020-10-13 15:37:19,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:19,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694895583] [2020-10-13 15:37:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:37:20,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:37:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:20,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694895583] [2020-10-13 15:37:20,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:20,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:20,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578969278] [2020-10-13 15:37:20,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:20,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:20,472 INFO L87 Difference]: Start difference. First operand 316 states and 475 transitions. Second operand 5 states. [2020-10-13 15:37:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:21,154 INFO L93 Difference]: Finished difference Result 654 states and 991 transitions. [2020-10-13 15:37:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:21,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:37:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:21,158 INFO L225 Difference]: With dead ends: 654 [2020-10-13 15:37:21,158 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:37:21,159 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 [2020-10-13 15:37:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:37:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:37:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:37:21,165 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 111 [2020-10-13 15:37:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:21,165 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:37:21,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:37:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:37:21,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:21,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:21,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:37:21,166 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash 756455703, now seen corresponding path program 1 times [2020-10-13 15:37:21,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:21,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855830844] [2020-10-13 15:37:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:37:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:21,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855830844] [2020-10-13 15:37:21,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:21,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:21,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490658443] [2020-10-13 15:37:21,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:21,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:21,907 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:37:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:22,884 INFO L93 Difference]: Finished difference Result 761 states and 1164 transitions. [2020-10-13 15:37:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:22,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:37:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:22,887 INFO L225 Difference]: With dead ends: 761 [2020-10-13 15:37:22,887 INFO L226 Difference]: Without dead ends: 449 [2020-10-13 15:37:22,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-13 15:37:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 365. [2020-10-13 15:37:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:37:22,897 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:37:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:22,897 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:37:22,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:37:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:37:22,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:22,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:22,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:37:22,899 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:22,899 INFO L82 PathProgramCache]: Analyzing trace with hash 539390263, now seen corresponding path program 1 times [2020-10-13 15:37:22,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:22,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148571339] [2020-10-13 15:37:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:37:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-13 15:37:23,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:37:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:23,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148571339] [2020-10-13 15:37:23,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:23,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:23,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243409073] [2020-10-13 15:37:23,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:23,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:23,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:23,667 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:37:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:24,652 INFO L93 Difference]: Finished difference Result 817 states and 1264 transitions. [2020-10-13 15:37:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:24,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:37:24,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:24,655 INFO L225 Difference]: With dead ends: 817 [2020-10-13 15:37:24,656 INFO L226 Difference]: Without dead ends: 477 [2020-10-13 15:37:24,656 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 [2020-10-13 15:37:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-13 15:37:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 365. [2020-10-13 15:37:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:37:24,662 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:37:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:24,663 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:37:24,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:37:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:37:24,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:24,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:24,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:37:24,665 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -146029206, now seen corresponding path program 1 times [2020-10-13 15:37:24,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:24,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187390942] [2020-10-13 15:37:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:37:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:25,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187390942] [2020-10-13 15:37:25,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:25,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:25,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571448231] [2020-10-13 15:37:25,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:25,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:25,689 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:37:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:26,406 INFO L93 Difference]: Finished difference Result 735 states and 1134 transitions. [2020-10-13 15:37:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:26,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:37:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:26,408 INFO L225 Difference]: With dead ends: 735 [2020-10-13 15:37:26,408 INFO L226 Difference]: Without dead ends: 395 [2020-10-13 15:37:26,409 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 [2020-10-13 15:37:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-13 15:37:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 365. [2020-10-13 15:37:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:37:26,417 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:37:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:26,417 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:37:26,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:37:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:37:26,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:26,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:26,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:37:26,419 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:26,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1738493390, now seen corresponding path program 1 times [2020-10-13 15:37:26,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:26,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201927697] [2020-10-13 15:37:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:27,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201927697] [2020-10-13 15:37:27,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:27,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:27,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685802004] [2020-10-13 15:37:27,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:27,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:27,163 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:37:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:28,096 INFO L93 Difference]: Finished difference Result 809 states and 1248 transitions. [2020-10-13 15:37:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:28,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:37:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:28,099 INFO L225 Difference]: With dead ends: 809 [2020-10-13 15:37:28,099 INFO L226 Difference]: Without dead ends: 469 [2020-10-13 15:37:28,100 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 [2020-10-13 15:37:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-13 15:37:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 365. [2020-10-13 15:37:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:37:28,106 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:37:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:28,107 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:37:28,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:37:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:37:28,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:28,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:28,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:37:28,108 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash 122412562, now seen corresponding path program 1 times [2020-10-13 15:37:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:28,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323460810] [2020-10-13 15:37:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:37:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 15:37:28,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:37:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:28,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323460810] [2020-10-13 15:37:28,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:28,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:28,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805310250] [2020-10-13 15:37:28,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:28,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:28,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:28,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:28,866 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:37:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:29,806 INFO L93 Difference]: Finished difference Result 781 states and 1198 transitions. [2020-10-13 15:37:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:29,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:37:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:29,809 INFO L225 Difference]: With dead ends: 781 [2020-10-13 15:37:29,809 INFO L226 Difference]: Without dead ends: 441 [2020-10-13 15:37:29,810 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 [2020-10-13 15:37:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-13 15:37:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 337. [2020-10-13 15:37:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:37:29,816 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 113 [2020-10-13 15:37:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:29,816 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:37:29,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:37:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:37:29,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:29,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:29,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:37:29,818 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:29,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1359667634, now seen corresponding path program 1 times [2020-10-13 15:37:29,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:29,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240517278] [2020-10-13 15:37:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:37:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:37:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:30,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:30,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240517278] [2020-10-13 15:37:30,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:30,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:30,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704173174] [2020-10-13 15:37:30,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:30,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:30,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:30,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:30,557 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:37:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:31,503 INFO L93 Difference]: Finished difference Result 761 states and 1162 transitions. [2020-10-13 15:37:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:31,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:37:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:31,507 INFO L225 Difference]: With dead ends: 761 [2020-10-13 15:37:31,507 INFO L226 Difference]: Without dead ends: 449 [2020-10-13 15:37:31,507 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 [2020-10-13 15:37:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-13 15:37:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 365. [2020-10-13 15:37:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:37:31,514 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 114 [2020-10-13 15:37:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:31,514 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:37:31,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:37:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:37:31,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:31,515 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:31,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:37:31,516 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2008010017, now seen corresponding path program 1 times [2020-10-13 15:37:31,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:31,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837129912] [2020-10-13 15:37:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:37:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:37:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:32,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837129912] [2020-10-13 15:37:32,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:32,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:32,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845452334] [2020-10-13 15:37:32,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:32,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:32,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:32,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:32,542 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:37:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:33,280 INFO L93 Difference]: Finished difference Result 733 states and 1130 transitions. [2020-10-13 15:37:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:33,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:37:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:33,283 INFO L225 Difference]: With dead ends: 733 [2020-10-13 15:37:33,283 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:37:33,284 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 [2020-10-13 15:37:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:37:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 365. [2020-10-13 15:37:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:37:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 559 transitions. [2020-10-13 15:37:33,291 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 559 transitions. Word has length 114 [2020-10-13 15:37:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:33,291 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 559 transitions. [2020-10-13 15:37:33,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 559 transitions. [2020-10-13 15:37:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:37:33,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:33,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:33,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:37:33,293 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:33,293 INFO L82 PathProgramCache]: Analyzing trace with hash -218792713, now seen corresponding path program 1 times [2020-10-13 15:37:33,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:33,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760985279] [2020-10-13 15:37:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:37:33,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-13 15:37:33,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:37:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:33,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:34,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760985279] [2020-10-13 15:37:34,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:34,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:34,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396542808] [2020-10-13 15:37:34,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:34,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:34,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:34,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:34,028 INFO L87 Difference]: Start difference. First operand 365 states and 559 transitions. Second operand 5 states. [2020-10-13 15:37:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:34,995 INFO L93 Difference]: Finished difference Result 781 states and 1196 transitions. [2020-10-13 15:37:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:34,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:37:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:34,998 INFO L225 Difference]: With dead ends: 781 [2020-10-13 15:37:34,998 INFO L226 Difference]: Without dead ends: 441 [2020-10-13 15:37:34,999 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 [2020-10-13 15:37:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-13 15:37:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 337. [2020-10-13 15:37:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:37:35,006 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 115 [2020-10-13 15:37:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:35,006 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:37:35,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:37:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:37:35,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:35,007 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:35,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:37:35,008 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:35,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1593733952, now seen corresponding path program 1 times [2020-10-13 15:37:35,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:35,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415695374] [2020-10-13 15:37:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:37:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:40,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415695374] [2020-10-13 15:37:40,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:40,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:40,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688988453] [2020-10-13 15:37:40,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:40,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:40,104 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:37:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:40,805 INFO L93 Difference]: Finished difference Result 676 states and 1025 transitions. [2020-10-13 15:37:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:40,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:37:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:40,808 INFO L225 Difference]: With dead ends: 676 [2020-10-13 15:37:40,808 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:37:40,809 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 [2020-10-13 15:37:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:37:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 337. [2020-10-13 15:37:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 508 transitions. [2020-10-13 15:37:40,816 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 508 transitions. Word has length 116 [2020-10-13 15:37:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:40,816 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 508 transitions. [2020-10-13 15:37:40,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 508 transitions. [2020-10-13 15:37:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:37:40,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:40,817 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:40,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:37:40,817 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1977892490, now seen corresponding path program 1 times [2020-10-13 15:37:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:40,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420619048] [2020-10-13 15:37:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:37:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-13 15:37:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:41,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:41,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420619048] [2020-10-13 15:37:41,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:41,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:41,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438385066] [2020-10-13 15:37:41,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:41,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:41,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:41,464 INFO L87 Difference]: Start difference. First operand 337 states and 508 transitions. Second operand 5 states. [2020-10-13 15:37:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:42,140 INFO L93 Difference]: Finished difference Result 675 states and 1022 transitions. [2020-10-13 15:37:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:42,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:37:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:42,142 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:37:42,143 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:37:42,143 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 [2020-10-13 15:37:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:37:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:37:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 507 transitions. [2020-10-13 15:37:42,150 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 507 transitions. Word has length 116 [2020-10-13 15:37:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:42,150 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 507 transitions. [2020-10-13 15:37:42,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 507 transitions. [2020-10-13 15:37:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:37:42,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:42,152 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:42,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:37:42,152 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1758971141, now seen corresponding path program 1 times [2020-10-13 15:37:42,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:42,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408179164] [2020-10-13 15:37:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:47,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:37:47,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:47,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:47,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:47,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:47,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:47,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408179164] [2020-10-13 15:37:47,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:47,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:47,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454596365] [2020-10-13 15:37:47,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:47,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:47,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:47,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:47,251 INFO L87 Difference]: Start difference. First operand 337 states and 507 transitions. Second operand 5 states. [2020-10-13 15:37:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:47,927 INFO L93 Difference]: Finished difference Result 675 states and 1020 transitions. [2020-10-13 15:37:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:47,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:37:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:47,930 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:37:47,930 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:37:47,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:37:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:37:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-10-13 15:37:47,937 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 117 [2020-10-13 15:37:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:47,937 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-10-13 15:37:47,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-10-13 15:37:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:37:47,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:47,938 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:47,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:37:47,938 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash -822875083, now seen corresponding path program 1 times [2020-10-13 15:37:47,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:47,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679189464] [2020-10-13 15:37:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:37:48,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-13 15:37:48,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:37:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:49,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679189464] [2020-10-13 15:37:49,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:49,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:49,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689053944] [2020-10-13 15:37:49,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:49,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:49,048 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 5 states. [2020-10-13 15:37:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:49,789 INFO L93 Difference]: Finished difference Result 677 states and 1022 transitions. [2020-10-13 15:37:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:49,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:37:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:49,792 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:37:49,792 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:37:49,793 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 [2020-10-13 15:37:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:37:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:37:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 505 transitions. [2020-10-13 15:37:49,799 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 505 transitions. Word has length 118 [2020-10-13 15:37:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:49,800 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 505 transitions. [2020-10-13 15:37:49,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 505 transitions. [2020-10-13 15:37:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:37:49,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:49,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:49,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:37:49,801 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:49,801 INFO L82 PathProgramCache]: Analyzing trace with hash -645321643, now seen corresponding path program 1 times [2020-10-13 15:37:49,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:49,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356446223] [2020-10-13 15:37:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:37:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:50,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356446223] [2020-10-13 15:37:50,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:50,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:50,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807524329] [2020-10-13 15:37:50,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:50,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:50,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:50,894 INFO L87 Difference]: Start difference. First operand 337 states and 505 transitions. Second operand 5 states. [2020-10-13 15:37:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:51,612 INFO L93 Difference]: Finished difference Result 677 states and 1020 transitions. [2020-10-13 15:37:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:51,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:37:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:51,615 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:37:51,615 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:37:51,616 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 [2020-10-13 15:37:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:37:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:37:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 504 transitions. [2020-10-13 15:37:51,622 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 504 transitions. Word has length 118 [2020-10-13 15:37:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:51,622 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 504 transitions. [2020-10-13 15:37:51,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 504 transitions. [2020-10-13 15:37:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:37:51,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:51,624 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 15:37:51,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:37:51,624 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1396669820, now seen corresponding path program 1 times [2020-10-13 15:37:51,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:51,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019111740] [2020-10-13 15:37:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:37:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:37:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:37:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:56,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:56,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:37:56,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019111740] [2020-10-13 15:37:56,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:56,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:56,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721739184] [2020-10-13 15:37:56,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:56,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:56,717 INFO L87 Difference]: Start difference. First operand 337 states and 504 transitions. Second operand 5 states. [2020-10-13 15:37:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:57,397 INFO L93 Difference]: Finished difference Result 675 states and 1014 transitions. [2020-10-13 15:37:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:57,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:37:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:57,399 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:37:57,399 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:37:57,400 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 [2020-10-13 15:37:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:37:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:37:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2020-10-13 15:37:57,406 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 118 [2020-10-13 15:37:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:57,406 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2020-10-13 15:37:57,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2020-10-13 15:37:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:37:57,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:57,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:57,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:37:57,407 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash -209867365, now seen corresponding path program 1 times [2020-10-13 15:37:57,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:57,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001074894] [2020-10-13 15:37:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:37:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:58,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001074894] [2020-10-13 15:37:58,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:58,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:58,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340920645] [2020-10-13 15:37:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:58,367 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 5 states. [2020-10-13 15:37:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:59,094 INFO L93 Difference]: Finished difference Result 675 states and 1014 transitions. [2020-10-13 15:37:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:59,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:37:59,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:59,097 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:37:59,098 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:37:59,098 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 [2020-10-13 15:37:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:37:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:37:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:37:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 502 transitions. [2020-10-13 15:37:59,105 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 502 transitions. Word has length 119 [2020-10-13 15:37:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:59,106 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 502 transitions. [2020-10-13 15:37:59,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 502 transitions. [2020-10-13 15:37:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:37:59,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:59,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:59,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:37:59,107 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:59,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1982980635, now seen corresponding path program 1 times [2020-10-13 15:37:59,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:59,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94552512] [2020-10-13 15:37:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:38:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:00,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:00,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:00,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:00,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94552512] [2020-10-13 15:38:00,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:00,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:00,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591165545] [2020-10-13 15:38:00,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:00,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:00,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:00,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:00,303 INFO L87 Difference]: Start difference. First operand 337 states and 502 transitions. Second operand 5 states.