/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.10.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:35:39,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:35:39,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:35:39,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:35:39,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:35:39,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:35:39,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:35:39,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:35:39,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:35:39,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:35:39,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:35:39,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:35:39,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:35:39,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:35:39,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:35:39,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:35:39,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:35:39,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:35:39,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:35:39,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:35:39,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:35:39,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:35:39,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:35:39,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:35:39,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:35:39,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:35:39,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:35:39,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:35:39,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:35:39,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:35:39,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:35:39,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:35:39,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:35:39,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:35:39,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:35:39,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:35:39,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:35:39,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:35:39,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:35:39,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:35:39,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:35:39,406 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 15:35:39,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:35:39,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:35:39,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:35:39,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:35:39,429 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:35:39,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:35:39,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:35:39,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:35:39,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:35:39,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:35:39,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:35:39,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:35:39,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:35:39,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:35:39,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:35:39,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:35:39,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:35:39,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:35:39,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:35:39,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:35:39,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:35:39,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:35:39,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:35:39,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:35:39,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:35:39,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:35:39,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:35:39,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:35:39,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:35:39,434 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 15:35:39,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:35:39,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:35:39,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:35:39,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:35:39,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:35:39,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-2.c [2020-10-13 15:35:39,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378762184/455051bfc03a4cb9a6bd290605298751/FLAG402efd5c8 [2020-10-13 15:35:40,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:35:40,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-2.c [2020-10-13 15:35:40,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378762184/455051bfc03a4cb9a6bd290605298751/FLAG402efd5c8 [2020-10-13 15:35:40,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378762184/455051bfc03a4cb9a6bd290605298751 [2020-10-13 15:35:40,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:35:40,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:35:40,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:40,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:35:40,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:35:40,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:40" (1/1) ... [2020-10-13 15:35:40,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5dbf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:40, skipping insertion in model container [2020-10-13 15:35:40,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:40" (1/1) ... [2020-10-13 15:35:40,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:35:40,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:35:41,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:41,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:35:41,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:41,749 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:35:41,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41 WrapperNode [2020-10-13 15:35:41,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:41,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:35:41,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:35:41,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:35:41,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (1/1) ... [2020-10-13 15:35:41,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:35:41,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:35:41,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:35:41,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:35:41,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (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 15:35:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:35:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:35:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:35:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:35:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:35:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:35:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:35:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:35:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:35:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:35:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:35:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:35:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:35:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:35:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:35:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:35:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:35:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:35:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:35:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:35:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:35:42,469 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:35:43,174 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:35:43,174 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:35:43,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:35:43,197 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:35:43,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:43 BoogieIcfgContainer [2020-10-13 15:35:43,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:35:43,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:35:43,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:35:43,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:35:43,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:35:40" (1/3) ... [2020-10-13 15:35:43,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561fd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:43, skipping insertion in model container [2020-10-13 15:35:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:41" (2/3) ... [2020-10-13 15:35:43,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561fd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:43, skipping insertion in model container [2020-10-13 15:35:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:43" (3/3) ... [2020-10-13 15:35:43,211 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2020-10-13 15:35:43,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:35:43,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:35:43,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:35:43,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:35:43,267 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:35:43,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:35:43,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:35:43,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:35:43,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:35:43,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:35:43,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:35:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-13 15:35:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:35:43,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:43,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:43,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:43,309 INFO L82 PathProgramCache]: Analyzing trace with hash 164626311, now seen corresponding path program 1 times [2020-10-13 15:35:43,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:43,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530123172] [2020-10-13 15:35:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 15:35:44,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-13 15:35:44,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:35:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:35:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:44,720 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 15:35:44,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530123172] [2020-10-13 15:35:44,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:44,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:44,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631361683] [2020-10-13 15:35:44,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:44,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:44,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:44,747 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2020-10-13 15:35:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:45,635 INFO L93 Difference]: Finished difference Result 327 states and 546 transitions. [2020-10-13 15:35:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:45,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-13 15:35:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:45,651 INFO L225 Difference]: With dead ends: 327 [2020-10-13 15:35:45,651 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:35:45,655 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 15:35:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:35:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:35:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:35:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 226 transitions. [2020-10-13 15:35:45,713 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 226 transitions. Word has length 47 [2020-10-13 15:35:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:45,713 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 226 transitions. [2020-10-13 15:35:45,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 226 transitions. [2020-10-13 15:35:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 15:35:45,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:45,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:45,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:35:45,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 899947951, now seen corresponding path program 1 times [2020-10-13 15:35:45,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:45,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042578218] [2020-10-13 15:35:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:46,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:35:46,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-13 15:35:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:47,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:47,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:35:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:47,026 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 15:35:47,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042578218] [2020-10-13 15:35:47,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:47,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:47,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76090879] [2020-10-13 15:35:47,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:47,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:47,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:47,047 INFO L87 Difference]: Start difference. First operand 149 states and 226 transitions. Second operand 5 states. [2020-10-13 15:35:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:47,842 INFO L93 Difference]: Finished difference Result 290 states and 437 transitions. [2020-10-13 15:35:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:47,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-13 15:35:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:47,845 INFO L225 Difference]: With dead ends: 290 [2020-10-13 15:35:47,846 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:35:47,850 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 15:35:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:35:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:35:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:35:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 225 transitions. [2020-10-13 15:35:47,876 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 225 transitions. Word has length 60 [2020-10-13 15:35:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:47,877 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 225 transitions. [2020-10-13 15:35:47,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 225 transitions. [2020-10-13 15:35:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:35:47,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:47,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:47,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:35:47,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1650828211, now seen corresponding path program 1 times [2020-10-13 15:35:47,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:47,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415857542] [2020-10-13 15:35:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:52,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:35:52,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:35:52,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:35:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:53,024 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 15:35:53,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415857542] [2020-10-13 15:35:53,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:53,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135569359] [2020-10-13 15:35:53,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:53,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:53,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:53,027 INFO L87 Difference]: Start difference. First operand 149 states and 225 transitions. Second operand 5 states. [2020-10-13 15:35:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:53,662 INFO L93 Difference]: Finished difference Result 289 states and 435 transitions. [2020-10-13 15:35:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:53,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:35:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:53,665 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:35:53,665 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 15:35:53,668 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 15:35:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 15:35:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 149. [2020-10-13 15:35:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:35:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2020-10-13 15:35:53,691 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 61 [2020-10-13 15:35:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:53,691 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2020-10-13 15:35:53,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2020-10-13 15:35:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:35:53,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:53,694 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, 1, 1, 1, 1, 1] [2020-10-13 15:35:53,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:35:53,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash 647206215, now seen corresponding path program 1 times [2020-10-13 15:35:53,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:53,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214700410] [2020-10-13 15:35:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:58,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:35:58,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:35:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:35:58,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:35:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:58,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:58,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:35:58,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:58,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:58,874 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 15:35:58,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214700410] [2020-10-13 15:35:58,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:58,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:58,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666062983] [2020-10-13 15:35:58,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:58,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:58,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:58,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:58,877 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand 6 states. [2020-10-13 15:35:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:59,504 INFO L93 Difference]: Finished difference Result 283 states and 427 transitions. [2020-10-13 15:35:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:35:59,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-13 15:35:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:59,506 INFO L225 Difference]: With dead ends: 283 [2020-10-13 15:35:59,507 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 15:35:59,508 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 15:35:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 15:35:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-13 15:35:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:35:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 235 transitions. [2020-10-13 15:35:59,529 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 235 transitions. Word has length 61 [2020-10-13 15:35:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:59,532 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 235 transitions. [2020-10-13 15:35:59,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 235 transitions. [2020-10-13 15:35:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:35:59,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:59,534 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:59,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:35:59,534 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash 937939196, now seen corresponding path program 1 times [2020-10-13 15:35:59,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:59,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787577000] [2020-10-13 15:35:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:00,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-13 15:36:00,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:00,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:00,423 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 15:36:00,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787577000] [2020-10-13 15:36:00,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:00,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:00,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099712183] [2020-10-13 15:36:00,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:00,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:00,428 INFO L87 Difference]: Start difference. First operand 158 states and 235 transitions. Second operand 5 states. [2020-10-13 15:36:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:01,065 INFO L93 Difference]: Finished difference Result 314 states and 465 transitions. [2020-10-13 15:36:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:01,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:36:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:01,067 INFO L225 Difference]: With dead ends: 314 [2020-10-13 15:36:01,067 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 15:36:01,068 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 15:36:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 15:36:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 158. [2020-10-13 15:36:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:36:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 234 transitions. [2020-10-13 15:36:01,081 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 234 transitions. Word has length 61 [2020-10-13 15:36:01,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:01,082 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 234 transitions. [2020-10-13 15:36:01,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 234 transitions. [2020-10-13 15:36:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:36:01,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:01,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:01,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:36:01,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash -720089219, now seen corresponding path program 1 times [2020-10-13 15:36:01,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:01,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47758803] [2020-10-13 15:36:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:36:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-13 15:36:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:36:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:36:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:01,497 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 15:36:01,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47758803] [2020-10-13 15:36:01,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:01,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:01,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751518292] [2020-10-13 15:36:01,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:01,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:01,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:01,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:01,500 INFO L87 Difference]: Start difference. First operand 158 states and 234 transitions. Second operand 5 states. [2020-10-13 15:36:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:02,224 INFO L93 Difference]: Finished difference Result 313 states and 463 transitions. [2020-10-13 15:36:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:02,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-13 15:36:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:02,226 INFO L225 Difference]: With dead ends: 313 [2020-10-13 15:36:02,226 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 15:36:02,227 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 15:36:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 15:36:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 158. [2020-10-13 15:36:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:36:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 233 transitions. [2020-10-13 15:36:02,239 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 233 transitions. Word has length 61 [2020-10-13 15:36:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:02,239 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 233 transitions. [2020-10-13 15:36:02,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 233 transitions. [2020-10-13 15:36:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:36:02,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:02,241 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:02,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:36:02,242 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:02,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1121947882, now seen corresponding path program 1 times [2020-10-13 15:36:02,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:02,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185693874] [2020-10-13 15:36:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:06,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:36:06,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3812 [2020-10-13 15:36:06,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:06,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:06,137 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 15:36:06,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185693874] [2020-10-13 15:36:06,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:06,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:06,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810580982] [2020-10-13 15:36:06,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:06,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:06,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:06,145 INFO L87 Difference]: Start difference. First operand 158 states and 233 transitions. Second operand 5 states. [2020-10-13 15:36:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:06,748 INFO L93 Difference]: Finished difference Result 304 states and 451 transitions. [2020-10-13 15:36:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:06,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:36:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:06,751 INFO L225 Difference]: With dead ends: 304 [2020-10-13 15:36:06,751 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 15:36:06,752 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 15:36:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 15:36:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-13 15:36:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:36:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 232 transitions. [2020-10-13 15:36:06,760 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 232 transitions. Word has length 62 [2020-10-13 15:36:06,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:06,760 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 232 transitions. [2020-10-13 15:36:06,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:06,760 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 232 transitions. [2020-10-13 15:36:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:36:06,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:06,761 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, 1, 1, 1, 1, 1] [2020-10-13 15:36:06,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:36:06,762 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1069953626, now seen corresponding path program 1 times [2020-10-13 15:36:06,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:06,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835522465] [2020-10-13 15:36:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:36:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:36:11,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:36:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:11,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:11,870 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 15:36:11,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835522465] [2020-10-13 15:36:11,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:11,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:11,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859324929] [2020-10-13 15:36:11,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:11,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:11,872 INFO L87 Difference]: Start difference. First operand 158 states and 232 transitions. Second operand 6 states. [2020-10-13 15:36:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:13,408 INFO L93 Difference]: Finished difference Result 416 states and 623 transitions. [2020-10-13 15:36:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:13,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 15:36:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:13,411 INFO L225 Difference]: With dead ends: 416 [2020-10-13 15:36:13,411 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:36:13,412 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 15:36:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:36:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 175. [2020-10-13 15:36:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:36:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 259 transitions. [2020-10-13 15:36:13,422 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 259 transitions. Word has length 62 [2020-10-13 15:36:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:13,424 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 259 transitions. [2020-10-13 15:36:13,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 259 transitions. [2020-10-13 15:36:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:36:13,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:13,425 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:13,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:36:13,426 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1342215735, now seen corresponding path program 1 times [2020-10-13 15:36:13,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:13,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968452355] [2020-10-13 15:36:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3026 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:16,548 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 15:36:16,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968452355] [2020-10-13 15:36:16,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:16,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:16,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588793408] [2020-10-13 15:36:16,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:16,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:16,550 INFO L87 Difference]: Start difference. First operand 175 states and 259 transitions. Second operand 5 states. [2020-10-13 15:36:17,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:17,400 INFO L93 Difference]: Finished difference Result 338 states and 504 transitions. [2020-10-13 15:36:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:17,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:36:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:17,403 INFO L225 Difference]: With dead ends: 338 [2020-10-13 15:36:17,403 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 15:36:17,404 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 15:36:17,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 15:36:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-10-13 15:36:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:36:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 258 transitions. [2020-10-13 15:36:17,411 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 258 transitions. Word has length 63 [2020-10-13 15:36:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:17,412 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 258 transitions. [2020-10-13 15:36:17,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:17,412 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 258 transitions. [2020-10-13 15:36:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:36:17,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:17,413 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, 1, 1, 1, 1, 1] [2020-10-13 15:36:17,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:36:17,413 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1376453676, now seen corresponding path program 1 times [2020-10-13 15:36:17,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:17,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585395594] [2020-10-13 15:36:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:22,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:22,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:22,513 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 15:36:22,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585395594] [2020-10-13 15:36:22,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:22,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:22,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999957904] [2020-10-13 15:36:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:22,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:22,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:22,516 INFO L87 Difference]: Start difference. First operand 175 states and 258 transitions. Second operand 6 states. [2020-10-13 15:36:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:23,281 INFO L93 Difference]: Finished difference Result 344 states and 510 transitions. [2020-10-13 15:36:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:23,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-13 15:36:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:23,283 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:23,284 INFO L226 Difference]: Without dead ends: 194 [2020-10-13 15:36:23,284 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 15:36:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-13 15:36:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 175. [2020-10-13 15:36:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:36:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 258 transitions. [2020-10-13 15:36:23,293 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 258 transitions. Word has length 63 [2020-10-13 15:36:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:23,293 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 258 transitions. [2020-10-13 15:36:23,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 258 transitions. [2020-10-13 15:36:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:36:23,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:23,294 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:23,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:36:23,295 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2041184603, now seen corresponding path program 1 times [2020-10-13 15:36:23,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:23,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453672187] [2020-10-13 15:36:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:25,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:25,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:36:25,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:25,486 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 15:36:25,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453672187] [2020-10-13 15:36:25,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:25,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:25,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806240058] [2020-10-13 15:36:25,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:25,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:25,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:25,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:25,488 INFO L87 Difference]: Start difference. First operand 175 states and 258 transitions. Second operand 5 states. [2020-10-13 15:36:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:26,113 INFO L93 Difference]: Finished difference Result 338 states and 503 transitions. [2020-10-13 15:36:26,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:26,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:36:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:26,116 INFO L225 Difference]: With dead ends: 338 [2020-10-13 15:36:26,116 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 15:36:26,117 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 15:36:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 15:36:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-10-13 15:36:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:36:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2020-10-13 15:36:26,124 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 64 [2020-10-13 15:36:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2020-10-13 15:36:26,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2020-10-13 15:36:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:36:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:26,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:26,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:36:26,126 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1828893178, now seen corresponding path program 1 times [2020-10-13 15:36:26,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:26,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132989117] [2020-10-13 15:36:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:36:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:26,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:26,483 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 15:36:26,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132989117] [2020-10-13 15:36:26,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:26,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:26,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515832058] [2020-10-13 15:36:26,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:26,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:26,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:26,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:26,485 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand 5 states. [2020-10-13 15:36:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:27,177 INFO L93 Difference]: Finished difference Result 377 states and 562 transitions. [2020-10-13 15:36:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:27,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:36:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:27,180 INFO L225 Difference]: With dead ends: 377 [2020-10-13 15:36:27,180 INFO L226 Difference]: Without dead ends: 227 [2020-10-13 15:36:27,182 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 15:36:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-13 15:36:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 197. [2020-10-13 15:36:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 15:36:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 295 transitions. [2020-10-13 15:36:27,193 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 295 transitions. Word has length 64 [2020-10-13 15:36:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:27,194 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 295 transitions. [2020-10-13 15:36:27,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 295 transitions. [2020-10-13 15:36:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:36:27,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:27,196 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, 1, 1, 1, 1, 1] [2020-10-13 15:36:27,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:36:27,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:27,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1920714465, now seen corresponding path program 1 times [2020-10-13 15:36:27,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:27,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551712822] [2020-10-13 15:36:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:32,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:32,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:32,307 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 15:36:32,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551712822] [2020-10-13 15:36:32,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:32,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:32,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246283915] [2020-10-13 15:36:32,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:32,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:32,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:32,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:32,309 INFO L87 Difference]: Start difference. First operand 197 states and 295 transitions. Second operand 6 states. [2020-10-13 15:36:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:33,165 INFO L93 Difference]: Finished difference Result 493 states and 750 transitions. [2020-10-13 15:36:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:33,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 15:36:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:33,168 INFO L225 Difference]: With dead ends: 493 [2020-10-13 15:36:33,168 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:36:33,169 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 15:36:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:36:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 192. [2020-10-13 15:36:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2020-10-13 15:36:33,179 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 64 [2020-10-13 15:36:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:33,179 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2020-10-13 15:36:33,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2020-10-13 15:36:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:36:33,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:33,180 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:33,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:36:33,181 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1174181870, now seen corresponding path program 1 times [2020-10-13 15:36:33,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:33,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343679303] [2020-10-13 15:36:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:36:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3127 [2020-10-13 15:36:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:36,384 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 15:36:36,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343679303] [2020-10-13 15:36:36,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:36,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:36,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662225879] [2020-10-13 15:36:36,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:36,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:36,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:36,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:36,385 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand 5 states. [2020-10-13 15:36:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:36,911 INFO L93 Difference]: Finished difference Result 362 states and 547 transitions. [2020-10-13 15:36:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:36,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:36:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:36,914 INFO L225 Difference]: With dead ends: 362 [2020-10-13 15:36:36,914 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 15:36:36,915 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 15:36:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 15:36:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-10-13 15:36:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 285 transitions. [2020-10-13 15:36:36,923 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 285 transitions. Word has length 65 [2020-10-13 15:36:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:36,923 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 285 transitions. [2020-10-13 15:36:36,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 285 transitions. [2020-10-13 15:36:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 15:36:36,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:36,924 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:36,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:36:36,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1577883024, now seen corresponding path program 1 times [2020-10-13 15:36:36,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:36,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604648786] [2020-10-13 15:36:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:37,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 15:36:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-13 15:36:37,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:37,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:37,811 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 15:36:37,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604648786] [2020-10-13 15:36:37,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:37,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:37,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76406212] [2020-10-13 15:36:37,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:37,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:37,815 INFO L87 Difference]: Start difference. First operand 192 states and 285 transitions. Second operand 5 states. [2020-10-13 15:36:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:38,648 INFO L93 Difference]: Finished difference Result 380 states and 568 transitions. [2020-10-13 15:36:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:38,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-13 15:36:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:38,650 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:36:38,651 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:38,651 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 15:36:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 192. [2020-10-13 15:36:38,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2020-10-13 15:36:38,660 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 77 [2020-10-13 15:36:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:38,660 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2020-10-13 15:36:38,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2020-10-13 15:36:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:36:38,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:38,662 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:38,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:36:38,662 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 479089979, now seen corresponding path program 1 times [2020-10-13 15:36:38,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:38,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453807295] [2020-10-13 15:36:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:39,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:36:39,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-13 15:36:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:39,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:39,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:39,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:39,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:39,229 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 15:36:39,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453807295] [2020-10-13 15:36:39,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:39,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:39,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596960649] [2020-10-13 15:36:39,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:39,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:39,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:39,232 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand 5 states. [2020-10-13 15:36:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:39,831 INFO L93 Difference]: Finished difference Result 378 states and 564 transitions. [2020-10-13 15:36:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:39,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:36:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:39,833 INFO L225 Difference]: With dead ends: 378 [2020-10-13 15:36:39,833 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 15:36:39,834 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 15:36:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 15:36:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 192. [2020-10-13 15:36:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2020-10-13 15:36:39,841 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 78 [2020-10-13 15:36:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:39,841 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2020-10-13 15:36:39,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2020-10-13 15:36:39,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:36:39,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:39,843 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:39,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:36:39,843 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1178938436, now seen corresponding path program 1 times [2020-10-13 15:36:39,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:39,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411049822] [2020-10-13 15:36:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,118 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 15:36:40,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411049822] [2020-10-13 15:36:40,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:40,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:40,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076362635] [2020-10-13 15:36:40,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:40,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:40,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:40,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:40,120 INFO L87 Difference]: Start difference. First operand 192 states and 283 transitions. Second operand 5 states. [2020-10-13 15:36:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:40,731 INFO L93 Difference]: Finished difference Result 377 states and 561 transitions. [2020-10-13 15:36:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:40,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:36:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:40,735 INFO L225 Difference]: With dead ends: 377 [2020-10-13 15:36:40,735 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 15:36:40,737 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 15:36:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 15:36:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 192. [2020-10-13 15:36:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 282 transitions. [2020-10-13 15:36:40,747 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 282 transitions. Word has length 78 [2020-10-13 15:36:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:40,748 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 282 transitions. [2020-10-13 15:36:40,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 282 transitions. [2020-10-13 15:36:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:36:40,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:40,749 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:40,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:36:40,750 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash 830034847, now seen corresponding path program 1 times [2020-10-13 15:36:40,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:40,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267658776] [2020-10-13 15:36:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:36:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:45,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:45,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,830 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 15:36:45,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267658776] [2020-10-13 15:36:45,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:45,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:45,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465982157] [2020-10-13 15:36:45,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:45,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:45,832 INFO L87 Difference]: Start difference. First operand 192 states and 282 transitions. Second operand 5 states. [2020-10-13 15:36:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:46,402 INFO L93 Difference]: Finished difference Result 376 states and 558 transitions. [2020-10-13 15:36:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:46,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:36:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:46,404 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:36:46,404 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:36:46,405 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 15:36:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:36:46,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:36:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:46,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 281 transitions. [2020-10-13 15:36:46,413 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 281 transitions. Word has length 79 [2020-10-13 15:36:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:46,413 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 281 transitions. [2020-10-13 15:36:46,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 281 transitions. [2020-10-13 15:36:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:36:46,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:46,415 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:46,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:36:46,415 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:46,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash -217475957, now seen corresponding path program 1 times [2020-10-13 15:36:46,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:46,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83842781] [2020-10-13 15:36:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3674 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:50,160 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 15:36:50,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83842781] [2020-10-13 15:36:50,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:50,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:50,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617600600] [2020-10-13 15:36:50,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:50,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:50,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:50,163 INFO L87 Difference]: Start difference. First operand 192 states and 281 transitions. Second operand 5 states. [2020-10-13 15:36:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:50,721 INFO L93 Difference]: Finished difference Result 376 states and 556 transitions. [2020-10-13 15:36:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:50,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:36:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:50,723 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:36:50,723 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:36:50,725 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 15:36:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:36:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:36:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 280 transitions. [2020-10-13 15:36:50,732 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 280 transitions. Word has length 79 [2020-10-13 15:36:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:50,732 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 280 transitions. [2020-10-13 15:36:50,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 280 transitions. [2020-10-13 15:36:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:36:50,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:50,733 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:50,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:36:50,734 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1525217610, now seen corresponding path program 1 times [2020-10-13 15:36:50,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:50,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665615514] [2020-10-13 15:36:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:36:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4002 [2020-10-13 15:36:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,813 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 15:36:54,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665615514] [2020-10-13 15:36:54,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:54,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:54,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91489797] [2020-10-13 15:36:54,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:54,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:54,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:54,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:54,817 INFO L87 Difference]: Start difference. First operand 192 states and 280 transitions. Second operand 5 states. [2020-10-13 15:36:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:55,379 INFO L93 Difference]: Finished difference Result 376 states and 554 transitions. [2020-10-13 15:36:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:55,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:36:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:55,381 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:36:55,382 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:36:55,382 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 15:36:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:36:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:36:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 279 transitions. [2020-10-13 15:36:55,392 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 279 transitions. Word has length 80 [2020-10-13 15:36:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:55,392 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 279 transitions. [2020-10-13 15:36:55,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 279 transitions. [2020-10-13 15:36:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:36:55,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:55,394 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:55,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:36:55,394 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:55,395 INFO L82 PathProgramCache]: Analyzing trace with hash -737305082, now seen corresponding path program 1 times [2020-10-13 15:36:55,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:55,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294146260] [2020-10-13 15:36:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:36:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:36:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3290 [2020-10-13 15:36:58,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,762 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 15:36:58,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294146260] [2020-10-13 15:36:58,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:58,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:58,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597863545] [2020-10-13 15:36:58,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:58,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:58,764 INFO L87 Difference]: Start difference. First operand 192 states and 279 transitions. Second operand 5 states. [2020-10-13 15:36:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:59,307 INFO L93 Difference]: Finished difference Result 376 states and 552 transitions. [2020-10-13 15:36:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:59,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:36:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:59,310 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:36:59,310 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:36:59,311 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 15:36:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:36:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:36:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:36:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 278 transitions. [2020-10-13 15:36:59,318 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 278 transitions. Word has length 81 [2020-10-13 15:36:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:59,318 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 278 transitions. [2020-10-13 15:36:59,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 278 transitions. [2020-10-13 15:36:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:36:59,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:59,320 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:59,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:36:59,320 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash 591377617, now seen corresponding path program 1 times [2020-10-13 15:36:59,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:59,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273423807] [2020-10-13 15:36:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:02,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,684 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 15:37:02,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273423807] [2020-10-13 15:37:02,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:02,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:02,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707343548] [2020-10-13 15:37:02,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:02,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:02,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:02,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:02,686 INFO L87 Difference]: Start difference. First operand 192 states and 278 transitions. Second operand 5 states. [2020-10-13 15:37:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:03,243 INFO L93 Difference]: Finished difference Result 366 states and 538 transitions. [2020-10-13 15:37:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:03,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:37:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:03,247 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:37:03,247 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:37:03,247 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 15:37:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:37:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 192. [2020-10-13 15:37:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:37:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 277 transitions. [2020-10-13 15:37:03,255 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 277 transitions. Word has length 82 [2020-10-13 15:37:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:03,255 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 277 transitions. [2020-10-13 15:37:03,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 277 transitions. [2020-10-13 15:37:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:37:03,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:03,257 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 15:37:03,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:37:03,258 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2009340395, now seen corresponding path program 1 times [2020-10-13 15:37:03,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:03,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836620946] [2020-10-13 15:37:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:37:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,456 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 15:37:03,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836620946] [2020-10-13 15:37:03,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:03,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:03,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28743806] [2020-10-13 15:37:03,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:03,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:03,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:03,458 INFO L87 Difference]: Start difference. First operand 192 states and 277 transitions. Second operand 5 states. [2020-10-13 15:37:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:04,245 INFO L93 Difference]: Finished difference Result 464 states and 686 transitions. [2020-10-13 15:37:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:04,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:37:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:04,249 INFO L225 Difference]: With dead ends: 464 [2020-10-13 15:37:04,249 INFO L226 Difference]: Without dead ends: 297 [2020-10-13 15:37:04,250 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 15:37:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-13 15:37:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 233. [2020-10-13 15:37:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-13 15:37:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 351 transitions. [2020-10-13 15:37:04,258 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 351 transitions. Word has length 86 [2020-10-13 15:37:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:04,258 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 351 transitions. [2020-10-13 15:37:04,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 351 transitions. [2020-10-13 15:37:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:37:04,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:04,260 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 15:37:04,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:37:04,260 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:04,261 INFO L82 PathProgramCache]: Analyzing trace with hash 163973229, now seen corresponding path program 1 times [2020-10-13 15:37:04,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:04,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358505828] [2020-10-13 15:37:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:37:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,589 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 15:37:04,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358505828] [2020-10-13 15:37:04,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:04,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:04,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041759940] [2020-10-13 15:37:04,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:04,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:04,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:04,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:04,591 INFO L87 Difference]: Start difference. First operand 233 states and 351 transitions. Second operand 5 states. [2020-10-13 15:37:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:05,300 INFO L93 Difference]: Finished difference Result 490 states and 748 transitions. [2020-10-13 15:37:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:05,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:37:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:05,303 INFO L225 Difference]: With dead ends: 490 [2020-10-13 15:37:05,303 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:37:05,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:37:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2020-10-13 15:37:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-13 15:37:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 393 transitions. [2020-10-13 15:37:05,314 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 393 transitions. Word has length 86 [2020-10-13 15:37:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:05,314 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 393 transitions. [2020-10-13 15:37:05,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 393 transitions. [2020-10-13 15:37:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:37:05,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:05,316 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 15:37:05,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:37:05,316 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2141459983, now seen corresponding path program 1 times [2020-10-13 15:37:05,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:05,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773071685] [2020-10-13 15:37:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:37:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 15:37:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:37:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:05,520 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 15:37:05,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773071685] [2020-10-13 15:37:05,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:05,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:05,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993954928] [2020-10-13 15:37:05,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:05,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:05,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:05,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:05,522 INFO L87 Difference]: Start difference. First operand 257 states and 393 transitions. Second operand 5 states. [2020-10-13 15:37:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:06,274 INFO L93 Difference]: Finished difference Result 547 states and 836 transitions. [2020-10-13 15:37:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:06,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:37:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:06,277 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:37:06,277 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 15:37:06,277 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 15:37:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 15:37:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 258. [2020-10-13 15:37:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 394 transitions. [2020-10-13 15:37:06,285 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 394 transitions. Word has length 87 [2020-10-13 15:37:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:06,286 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 394 transitions. [2020-10-13 15:37:06,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 394 transitions. [2020-10-13 15:37:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:37:06,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:06,288 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:06,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:37:06,288 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -716372533, now seen corresponding path program 1 times [2020-10-13 15:37:06,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:06,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092603953] [2020-10-13 15:37:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:07,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:07,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:07,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:07,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:07,064 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 15:37:07,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092603953] [2020-10-13 15:37:07,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:07,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:07,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312063723] [2020-10-13 15:37:07,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:07,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:07,066 INFO L87 Difference]: Start difference. First operand 258 states and 394 transitions. Second operand 5 states. [2020-10-13 15:37:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:07,838 INFO L93 Difference]: Finished difference Result 548 states and 836 transitions. [2020-10-13 15:37:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:07,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:37:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:07,841 INFO L225 Difference]: With dead ends: 548 [2020-10-13 15:37:07,841 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 15:37:07,842 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 15:37:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 15:37:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 258. [2020-10-13 15:37:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 393 transitions. [2020-10-13 15:37:07,851 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 393 transitions. Word has length 99 [2020-10-13 15:37:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:07,851 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 393 transitions. [2020-10-13 15:37:07,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 393 transitions. [2020-10-13 15:37:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:37:07,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:07,853 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:07,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:37:07,854 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:07,854 INFO L82 PathProgramCache]: Analyzing trace with hash 821967497, now seen corresponding path program 1 times [2020-10-13 15:37:07,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:07,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676966974] [2020-10-13 15:37:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,608 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 15:37:08,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676966974] [2020-10-13 15:37:08,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:08,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:08,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187606631] [2020-10-13 15:37:08,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:08,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:08,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:08,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:08,610 INFO L87 Difference]: Start difference. First operand 258 states and 393 transitions. Second operand 5 states. [2020-10-13 15:37:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:09,298 INFO L93 Difference]: Finished difference Result 516 states and 789 transitions. [2020-10-13 15:37:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:09,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:37:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:09,300 INFO L225 Difference]: With dead ends: 516 [2020-10-13 15:37:09,301 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:09,302 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 15:37:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 258. [2020-10-13 15:37:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 392 transitions. [2020-10-13 15:37:09,309 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 392 transitions. Word has length 99 [2020-10-13 15:37:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:09,310 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 392 transitions. [2020-10-13 15:37:09,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 392 transitions. [2020-10-13 15:37:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:09,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:09,311 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:09,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:37:09,312 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1923355552, now seen corresponding path program 1 times [2020-10-13 15:37:09,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:09,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626489711] [2020-10-13 15:37:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:10,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:10,052 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 15:37:10,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626489711] [2020-10-13 15:37:10,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:10,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:10,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565576094] [2020-10-13 15:37:10,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:10,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:10,054 INFO L87 Difference]: Start difference. First operand 258 states and 392 transitions. Second operand 5 states. [2020-10-13 15:37:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:10,822 INFO L93 Difference]: Finished difference Result 546 states and 830 transitions. [2020-10-13 15:37:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,825 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:37:10,825 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:37:10,826 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 15:37:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:37:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 258. [2020-10-13 15:37:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 391 transitions. [2020-10-13 15:37:10,834 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 391 transitions. Word has length 100 [2020-10-13 15:37:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,835 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 391 transitions. [2020-10-13 15:37:10,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 391 transitions. [2020-10-13 15:37:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:10,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,836 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:10,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:37:10,837 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,837 INFO L82 PathProgramCache]: Analyzing trace with hash 713583329, now seen corresponding path program 1 times [2020-10-13 15:37:10,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836511102] [2020-10-13 15:37:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:11,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:11,342 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 15:37:11,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836511102] [2020-10-13 15:37:11,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:11,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:11,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452324822] [2020-10-13 15:37:11,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:11,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:11,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:11,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:11,343 INFO L87 Difference]: Start difference. First operand 258 states and 391 transitions. Second operand 5 states. [2020-10-13 15:37:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:12,116 INFO L93 Difference]: Finished difference Result 545 states and 827 transitions. [2020-10-13 15:37:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:12,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:12,119 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:37:12,119 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:37:12,120 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 15:37:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:37:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 258. [2020-10-13 15:37:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 390 transitions. [2020-10-13 15:37:12,127 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 390 transitions. Word has length 100 [2020-10-13 15:37:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:12,128 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 390 transitions. [2020-10-13 15:37:12,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 390 transitions. [2020-10-13 15:37:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:12,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:12,129 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:12,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:37:12,129 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1479454878, now seen corresponding path program 1 times [2020-10-13 15:37:12,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:12,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007184399] [2020-10-13 15:37:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:37:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:12,859 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 15:37:12,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007184399] [2020-10-13 15:37:12,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:12,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:12,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053931431] [2020-10-13 15:37:12,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:12,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:12,861 INFO L87 Difference]: Start difference. First operand 258 states and 390 transitions. Second operand 5 states. [2020-10-13 15:37:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:13,525 INFO L93 Difference]: Finished difference Result 514 states and 781 transitions. [2020-10-13 15:37:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:13,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:13,534 INFO L225 Difference]: With dead ends: 514 [2020-10-13 15:37:13,534 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 15:37:13,535 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 15:37:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 15:37:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2020-10-13 15:37:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 389 transitions. [2020-10-13 15:37:13,550 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 389 transitions. Word has length 100 [2020-10-13 15:37:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:13,550 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 389 transitions. [2020-10-13 15:37:13,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 389 transitions. [2020-10-13 15:37:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:37:13,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:13,552 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:13,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:37:13,552 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1157484003, now seen corresponding path program 1 times [2020-10-13 15:37:13,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:13,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058783003] [2020-10-13 15:37:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:14,007 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 15:37:14,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058783003] [2020-10-13 15:37:14,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:14,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:14,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896137467] [2020-10-13 15:37:14,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:14,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:14,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:14,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:14,009 INFO L87 Difference]: Start difference. First operand 258 states and 389 transitions. Second operand 5 states. [2020-10-13 15:37:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:14,688 INFO L93 Difference]: Finished difference Result 513 states and 778 transitions. [2020-10-13 15:37:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:14,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:37:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:14,690 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:37:14,690 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 15:37:14,691 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 15:37:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 15:37:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-13 15:37:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 388 transitions. [2020-10-13 15:37:14,700 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 388 transitions. Word has length 100 [2020-10-13 15:37:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:14,701 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 388 transitions. [2020-10-13 15:37:14,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 388 transitions. [2020-10-13 15:37:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:37:14,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:14,702 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:37:14,703 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:14,703 INFO L82 PathProgramCache]: Analyzing trace with hash -631332582, now seen corresponding path program 1 times [2020-10-13 15:37:14,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:14,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280948959] [2020-10-13 15:37:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:19,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:19,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,803 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 15:37:19,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280948959] [2020-10-13 15:37:19,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:19,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:19,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686611886] [2020-10-13 15:37:19,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:19,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:19,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:19,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:19,806 INFO L87 Difference]: Start difference. First operand 258 states and 388 transitions. Second operand 5 states. [2020-10-13 15:37:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:20,549 INFO L93 Difference]: Finished difference Result 544 states and 820 transitions. [2020-10-13 15:37:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:20,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:37:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:20,552 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:20,553 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:20,553 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 15:37:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 258. [2020-10-13 15:37:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 387 transitions. [2020-10-13 15:37:20,561 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 387 transitions. Word has length 101 [2020-10-13 15:37:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:20,561 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 387 transitions. [2020-10-13 15:37:20,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 387 transitions. [2020-10-13 15:37:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:37:20,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:20,563 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:20,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:37:20,563 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:20,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1678843386, now seen corresponding path program 1 times [2020-10-13 15:37:20,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:20,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625180211] [2020-10-13 15:37:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:37:25,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:37:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:37:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:37:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:25,671 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 15:37:25,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625180211] [2020-10-13 15:37:25,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:25,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:25,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241844569] [2020-10-13 15:37:25,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:25,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:25,685 INFO L87 Difference]: Start difference. First operand 258 states and 387 transitions. Second operand 5 states. [2020-10-13 15:37:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:26,473 INFO L93 Difference]: Finished difference Result 544 states and 818 transitions. [2020-10-13 15:37:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:26,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:37:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:26,476 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:26,476 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:26,476 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 15:37:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 258. [2020-10-13 15:37:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2020-10-13 15:37:26,484 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 101 [2020-10-13 15:37:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:26,484 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2020-10-13 15:37:26,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2020-10-13 15:37:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:37:26,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:26,486 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:26,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:37:26,486 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash 244686424, now seen corresponding path program 1 times [2020-10-13 15:37:26,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:26,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930996028] [2020-10-13 15:37:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:31,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:31,575 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 15:37:31,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930996028] [2020-10-13 15:37:31,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:31,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:31,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551590330] [2020-10-13 15:37:31,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:31,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:31,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:31,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:31,576 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand 5 states. [2020-10-13 15:37:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:32,228 INFO L93 Difference]: Finished difference Result 512 states and 771 transitions. [2020-10-13 15:37:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:32,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:37:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:32,231 INFO L225 Difference]: With dead ends: 512 [2020-10-13 15:37:32,232 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 15:37:32,233 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 15:37:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 15:37:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-10-13 15:37:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 385 transitions. [2020-10-13 15:37:32,240 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 385 transitions. Word has length 101 [2020-10-13 15:37:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:32,241 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 385 transitions. [2020-10-13 15:37:32,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 385 transitions. [2020-10-13 15:37:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:37:32,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:32,242 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:32,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:37:32,243 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:32,243 INFO L82 PathProgramCache]: Analyzing trace with hash -802824380, now seen corresponding path program 1 times [2020-10-13 15:37:32,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:32,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939342573] [2020-10-13 15:37:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:32,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:37,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:37:37,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4911 [2020-10-13 15:37:37,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:37,233 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 15:37:37,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939342573] [2020-10-13 15:37:37,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:37,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:37,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337316182] [2020-10-13 15:37:37,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:37,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:37,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:37,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:37,235 INFO L87 Difference]: Start difference. First operand 258 states and 385 transitions. Second operand 5 states. [2020-10-13 15:37:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:37,890 INFO L93 Difference]: Finished difference Result 512 states and 769 transitions. [2020-10-13 15:37:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:37,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:37:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:37,893 INFO L225 Difference]: With dead ends: 512 [2020-10-13 15:37:37,894 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 15:37:37,894 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 15:37:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 15:37:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-10-13 15:37:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 384 transitions. [2020-10-13 15:37:37,901 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 384 transitions. Word has length 101 [2020-10-13 15:37:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:37,901 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 384 transitions. [2020-10-13 15:37:37,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 384 transitions. [2020-10-13 15:37:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:37:37,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:37,903 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:37,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:37:37,903 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 417032347, now seen corresponding path program 1 times [2020-10-13 15:37:37,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:37,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583300465] [2020-10-13 15:37:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,991 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 15:37:42,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583300465] [2020-10-13 15:37:42,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:42,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:42,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021979775] [2020-10-13 15:37:42,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:42,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:42,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:42,992 INFO L87 Difference]: Start difference. First operand 258 states and 384 transitions. Second operand 5 states. [2020-10-13 15:37:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:43,814 INFO L93 Difference]: Finished difference Result 544 states and 812 transitions. [2020-10-13 15:37:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:43,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:37:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:43,817 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:43,817 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:43,818 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 15:37:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 258. [2020-10-13 15:37:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 383 transitions. [2020-10-13 15:37:43,826 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 383 transitions. Word has length 102 [2020-10-13 15:37:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:43,826 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 383 transitions. [2020-10-13 15:37:43,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 383 transitions. [2020-10-13 15:37:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:37:43,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:43,828 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:43,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:37:43,828 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1803817757, now seen corresponding path program 1 times [2020-10-13 15:37:43,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:43,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227942252] [2020-10-13 15:37:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:37:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:48,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:48,355 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 15:37:48,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227942252] [2020-10-13 15:37:48,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:48,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:48,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460307367] [2020-10-13 15:37:48,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:48,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:48,357 INFO L87 Difference]: Start difference. First operand 258 states and 383 transitions. Second operand 5 states. [2020-10-13 15:37:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:49,018 INFO L93 Difference]: Finished difference Result 512 states and 765 transitions. [2020-10-13 15:37:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:49,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:37:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:49,021 INFO L225 Difference]: With dead ends: 512 [2020-10-13 15:37:49,021 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 15:37:49,022 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 15:37:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 15:37:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-10-13 15:37:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 382 transitions. [2020-10-13 15:37:49,029 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 382 transitions. Word has length 102 [2020-10-13 15:37:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:49,029 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 382 transitions. [2020-10-13 15:37:49,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 382 transitions. [2020-10-13 15:37:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:37:49,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:49,031 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:49,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:37:49,031 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -657098559, now seen corresponding path program 1 times [2020-10-13 15:37:49,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:49,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317908159] [2020-10-13 15:37:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4484 [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,601 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 15:37:53,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317908159] [2020-10-13 15:37:53,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:53,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:53,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579642255] [2020-10-13 15:37:53,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:53,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:53,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:53,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:53,602 INFO L87 Difference]: Start difference. First operand 258 states and 382 transitions. Second operand 5 states. [2020-10-13 15:37:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:54,381 INFO L93 Difference]: Finished difference Result 544 states and 808 transitions. [2020-10-13 15:37:54,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:54,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:37:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:54,384 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:54,384 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:54,385 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 15:37:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 258. [2020-10-13 15:37:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:37:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 381 transitions. [2020-10-13 15:37:54,392 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 381 transitions. Word has length 103 [2020-10-13 15:37:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:54,392 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 381 transitions. [2020-10-13 15:37:54,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 381 transitions. [2020-10-13 15:37:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:37:54,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:54,394 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:54,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:37:54,394 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash -616423809, now seen corresponding path program 1 times [2020-10-13 15:37:54,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:54,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557311171] [2020-10-13 15:37:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:37:59,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:37:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4892 [2020-10-13 15:37:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:59,371 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 15:37:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557311171] [2020-10-13 15:37:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908823005] [2020-10-13 15:37:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:59,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:59,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:59,372 INFO L87 Difference]: Start difference. First operand 258 states and 381 transitions. Second operand 5 states. [2020-10-13 15:38:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:00,021 INFO L93 Difference]: Finished difference Result 512 states and 761 transitions. [2020-10-13 15:38:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:00,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:38:00,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:00,024 INFO L225 Difference]: With dead ends: 512 [2020-10-13 15:38:00,024 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 15:38:00,025 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 15:38:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 15:38:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-10-13 15:38:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:38:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 380 transitions. [2020-10-13 15:38:00,035 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 380 transitions. Word has length 103 [2020-10-13 15:38:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:00,035 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 380 transitions. [2020-10-13 15:38:00,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 380 transitions. [2020-10-13 15:38:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:38:00,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:00,037 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:00,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:38:00,037 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1217187466, now seen corresponding path program 1 times [2020-10-13 15:38:00,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:00,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387630899] [2020-10-13 15:38:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4619 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:04,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,769 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 15:38:04,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387630899] [2020-10-13 15:38:04,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:04,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:04,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608596025] [2020-10-13 15:38:04,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:04,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:04,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:04,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:04,771 INFO L87 Difference]: Start difference. First operand 258 states and 380 transitions. Second operand 5 states. [2020-10-13 15:38:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:05,510 INFO L93 Difference]: Finished difference Result 534 states and 792 transitions. [2020-10-13 15:38:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:05,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:38:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:05,513 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:05,513 INFO L226 Difference]: Without dead ends: 301 [2020-10-13 15:38:05,514 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 15:38:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-13 15:38:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2020-10-13 15:38:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:38:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 379 transitions. [2020-10-13 15:38:05,520 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 379 transitions. Word has length 104 [2020-10-13 15:38:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:05,521 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 379 transitions. [2020-10-13 15:38:05,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 379 transitions. [2020-10-13 15:38:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:38:05,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:05,522 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:05,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:38:05,522 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash 43729784, now seen corresponding path program 1 times [2020-10-13 15:38:05,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:05,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679289315] [2020-10-13 15:38:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:09,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:38:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4176 [2020-10-13 15:38:09,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:09,781 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 15:38:09,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679289315] [2020-10-13 15:38:09,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:09,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:09,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481322472] [2020-10-13 15:38:09,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:09,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:09,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:09,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:09,782 INFO L87 Difference]: Start difference. First operand 258 states and 379 transitions. Second operand 5 states. [2020-10-13 15:38:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:10,410 INFO L93 Difference]: Finished difference Result 502 states and 745 transitions. [2020-10-13 15:38:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:10,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:38:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:10,413 INFO L225 Difference]: With dead ends: 502 [2020-10-13 15:38:10,413 INFO L226 Difference]: Without dead ends: 269 [2020-10-13 15:38:10,414 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 15:38:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-13 15:38:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 258. [2020-10-13 15:38:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:38:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 378 transitions. [2020-10-13 15:38:10,420 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 378 transitions. Word has length 104 [2020-10-13 15:38:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:10,420 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 378 transitions. [2020-10-13 15:38:10,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 378 transitions. [2020-10-13 15:38:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:10,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:10,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:10,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:38:10,422 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1724253020, now seen corresponding path program 1 times [2020-10-13 15:38:10,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:10,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401881632] [2020-10-13 15:38:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,132 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 15:38:11,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401881632] [2020-10-13 15:38:11,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:11,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:11,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418584637] [2020-10-13 15:38:11,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:11,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:11,133 INFO L87 Difference]: Start difference. First operand 258 states and 378 transitions. Second operand 5 states. [2020-10-13 15:38:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:11,871 INFO L93 Difference]: Finished difference Result 534 states and 788 transitions. [2020-10-13 15:38:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:11,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:11,874 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:11,874 INFO L226 Difference]: Without dead ends: 301 [2020-10-13 15:38:11,875 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 15:38:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-13 15:38:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2020-10-13 15:38:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:38:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 377 transitions. [2020-10-13 15:38:11,881 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 377 transitions. Word has length 108 [2020-10-13 15:38:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:11,882 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 377 transitions. [2020-10-13 15:38:11,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 377 transitions. [2020-10-13 15:38:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:11,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:11,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:11,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:38:11,883 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash 237321638, now seen corresponding path program 1 times [2020-10-13 15:38:11,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:11,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832569471] [2020-10-13 15:38:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:38:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,231 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 15:38:12,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832569471] [2020-10-13 15:38:12,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:12,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:12,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187559773] [2020-10-13 15:38:12,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:12,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:12,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:12,233 INFO L87 Difference]: Start difference. First operand 258 states and 377 transitions. Second operand 5 states. [2020-10-13 15:38:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:12,872 INFO L93 Difference]: Finished difference Result 544 states and 807 transitions. [2020-10-13 15:38:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:12,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:12,876 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:38:12,876 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:38:12,877 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 15:38:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:38:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 284. [2020-10-13 15:38:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-13 15:38:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 423 transitions. [2020-10-13 15:38:12,885 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 423 transitions. Word has length 108 [2020-10-13 15:38:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:12,886 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 423 transitions. [2020-10-13 15:38:12,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 423 transitions. [2020-10-13 15:38:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:38:12,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:12,887 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 15:38:12,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:38:12,888 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash 935777518, now seen corresponding path program 1 times [2020-10-13 15:38:12,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:12,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513779053] [2020-10-13 15:38:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:13,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:13,632 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 15:38:13,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513779053] [2020-10-13 15:38:13,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:13,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:13,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716165558] [2020-10-13 15:38:13,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:13,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:13,634 INFO L87 Difference]: Start difference. First operand 284 states and 423 transitions. Second operand 5 states. [2020-10-13 15:38:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:14,435 INFO L93 Difference]: Finished difference Result 586 states and 878 transitions. [2020-10-13 15:38:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:14,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:38:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:14,438 INFO L225 Difference]: With dead ends: 586 [2020-10-13 15:38:14,438 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:38:14,438 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 15:38:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:38:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 284. [2020-10-13 15:38:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-13 15:38:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 422 transitions. [2020-10-13 15:38:14,445 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 422 transitions. Word has length 111 [2020-10-13 15:38:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:14,446 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 422 transitions. [2020-10-13 15:38:14,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 422 transitions. [2020-10-13 15:38:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:14,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:14,447 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] [2020-10-13 15:38:14,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:38:14,447 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:14,447 INFO L82 PathProgramCache]: Analyzing trace with hash -837902269, now seen corresponding path program 1 times [2020-10-13 15:38:14,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:14,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999619587] [2020-10-13 15:38:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:38:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:38:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:15,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:15,110 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 15:38:15,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999619587] [2020-10-13 15:38:15,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:15,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:15,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068722136] [2020-10-13 15:38:15,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:15,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:15,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:15,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:15,112 INFO L87 Difference]: Start difference. First operand 284 states and 422 transitions. Second operand 5 states. [2020-10-13 15:38:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:15,950 INFO L93 Difference]: Finished difference Result 610 states and 920 transitions. [2020-10-13 15:38:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:15,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:15,953 INFO L225 Difference]: With dead ends: 610 [2020-10-13 15:38:15,953 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 15:38:15,953 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 15:38:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 15:38:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 314. [2020-10-13 15:38:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:38:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 476 transitions. [2020-10-13 15:38:15,960 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 476 transitions. Word has length 112 [2020-10-13 15:38:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:15,961 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 476 transitions. [2020-10-13 15:38:15,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 476 transitions. [2020-10-13 15:38:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:15,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:15,962 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 15:38:15,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:38:15,962 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1578140616, now seen corresponding path program 1 times [2020-10-13 15:38:15,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:15,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411592312] [2020-10-13 15:38:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:38:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:16,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:16,715 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 15:38:16,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411592312] [2020-10-13 15:38:16,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:16,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:16,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865941806] [2020-10-13 15:38:16,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:16,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:16,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:16,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:16,717 INFO L87 Difference]: Start difference. First operand 314 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:17,534 INFO L93 Difference]: Finished difference Result 646 states and 984 transitions. [2020-10-13 15:38:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:17,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:17,537 INFO L225 Difference]: With dead ends: 646 [2020-10-13 15:38:17,537 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:38:17,538 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 15:38:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:38:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 314. [2020-10-13 15:38:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:38:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 475 transitions. [2020-10-13 15:38:17,545 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 475 transitions. Word has length 113 [2020-10-13 15:38:17,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:17,546 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 475 transitions. [2020-10-13 15:38:17,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 475 transitions. [2020-10-13 15:38:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:17,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:17,547 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:17,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:38:17,547 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2034018343, now seen corresponding path program 1 times [2020-10-13 15:38:17,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:17,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831830838] [2020-10-13 15:38:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:38:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,441 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 15:38:18,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831830838] [2020-10-13 15:38:18,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:18,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:18,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236543355] [2020-10-13 15:38:18,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:18,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:18,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:18,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:18,443 INFO L87 Difference]: Start difference. First operand 314 states and 475 transitions. Second operand 5 states. [2020-10-13 15:38:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:19,212 INFO L93 Difference]: Finished difference Result 646 states and 982 transitions. [2020-10-13 15:38:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:19,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:19,215 INFO L225 Difference]: With dead ends: 646 [2020-10-13 15:38:19,215 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:38:19,216 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 15:38:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:38:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 314. [2020-10-13 15:38:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:38:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 474 transitions. [2020-10-13 15:38:19,225 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 474 transitions. Word has length 114 [2020-10-13 15:38:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:19,225 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 474 transitions. [2020-10-13 15:38:19,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 474 transitions. [2020-10-13 15:38:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:19,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:19,226 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 15:38:19,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:38:19,227 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash -196519619, now seen corresponding path program 1 times [2020-10-13 15:38:19,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:19,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794731444] [2020-10-13 15:38:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:38:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:19,979 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 15:38:19,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794731444] [2020-10-13 15:38:19,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:19,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:19,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847245494] [2020-10-13 15:38:19,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:19,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:19,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:19,981 INFO L87 Difference]: Start difference. First operand 314 states and 474 transitions. Second operand 5 states. [2020-10-13 15:38:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:20,761 INFO L93 Difference]: Finished difference Result 644 states and 978 transitions. [2020-10-13 15:38:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:20,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:20,764 INFO L225 Difference]: With dead ends: 644 [2020-10-13 15:38:20,764 INFO L226 Difference]: Without dead ends: 355 [2020-10-13 15:38:20,766 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 15:38:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-13 15:38:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 314. [2020-10-13 15:38:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:38:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 473 transitions. [2020-10-13 15:38:20,774 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 473 transitions. Word has length 114 [2020-10-13 15:38:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:20,774 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 473 transitions. [2020-10-13 15:38:20,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 473 transitions. [2020-10-13 15:38:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:38:20,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:20,775 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:20,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:38:20,776 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1968891964, now seen corresponding path program 1 times [2020-10-13 15:38:20,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:20,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727656780] [2020-10-13 15:38:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:38:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:21,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727656780] [2020-10-13 15:38:21,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:21,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:21,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819180396] [2020-10-13 15:38:21,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:21,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:21,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:21,631 INFO L87 Difference]: Start difference. First operand 314 states and 473 transitions. Second operand 5 states. [2020-10-13 15:38:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:22,446 INFO L93 Difference]: Finished difference Result 666 states and 1016 transitions. [2020-10-13 15:38:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:22,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:38:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:22,449 INFO L225 Difference]: With dead ends: 666 [2020-10-13 15:38:22,449 INFO L226 Difference]: Without dead ends: 377 [2020-10-13 15:38:22,450 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 15:38:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-13 15:38:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 342. [2020-10-13 15:38:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-13 15:38:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 523 transitions. [2020-10-13 15:38:22,456 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 523 transitions. Word has length 115 [2020-10-13 15:38:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:22,456 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 523 transitions. [2020-10-13 15:38:22,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 523 transitions. [2020-10-13 15:38:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:38:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:22,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:22,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:38:22,458 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1510100710, now seen corresponding path program 1 times [2020-10-13 15:38:22,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:22,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335064485] [2020-10-13 15:38:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:38:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:22,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:22,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:22,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335064485] [2020-10-13 15:38:22,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:22,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:22,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567638052] [2020-10-13 15:38:22,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:22,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:22,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:22,733 INFO L87 Difference]: Start difference. First operand 342 states and 523 transitions. Second operand 5 states. [2020-10-13 15:38:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:23,528 INFO L93 Difference]: Finished difference Result 697 states and 1072 transitions. [2020-10-13 15:38:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:23,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:38:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:23,531 INFO L225 Difference]: With dead ends: 697 [2020-10-13 15:38:23,531 INFO L226 Difference]: Without dead ends: 380 [2020-10-13 15:38:23,532 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 15:38:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-13 15:38:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 342. [2020-10-13 15:38:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-13 15:38:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 522 transitions. [2020-10-13 15:38:23,539 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 522 transitions. Word has length 115 [2020-10-13 15:38:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:23,540 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 522 transitions. [2020-10-13 15:38:23,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 522 transitions. [2020-10-13 15:38:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:38:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:23,541 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, 1, 1] [2020-10-13 15:38:23,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:38:23,542 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:23,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1111320770, now seen corresponding path program 1 times [2020-10-13 15:38:23,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:23,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781234453] [2020-10-13 15:38:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:38:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:25,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:25,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:25,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781234453] [2020-10-13 15:38:25,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:25,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:25,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871551730] [2020-10-13 15:38:25,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:25,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:25,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:25,541 INFO L87 Difference]: Start difference. First operand 342 states and 522 transitions. Second operand 5 states. [2020-10-13 15:38:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:26,290 INFO L93 Difference]: Finished difference Result 689 states and 1057 transitions. [2020-10-13 15:38:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:26,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:38:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:26,294 INFO L225 Difference]: With dead ends: 689 [2020-10-13 15:38:26,294 INFO L226 Difference]: Without dead ends: 372 [2020-10-13 15:38:26,295 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 15:38:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-13 15:38:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 342. [2020-10-13 15:38:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-13 15:38:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 521 transitions. [2020-10-13 15:38:26,306 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 521 transitions. Word has length 117 [2020-10-13 15:38:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:26,307 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 521 transitions. [2020-10-13 15:38:26,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 521 transitions. [2020-10-13 15:38:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:38:26,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:26,308 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] [2020-10-13 15:38:26,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:38:26,308 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash 790167944, now seen corresponding path program 1 times [2020-10-13 15:38:26,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:26,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113843402] [2020-10-13 15:38:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:38:26,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-13 15:38:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:38:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:38:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:27,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:27,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113843402] [2020-10-13 15:38:27,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807058110] [2020-10-13 15:38:27,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,112 INFO L87 Difference]: Start difference. First operand 342 states and 521 transitions. Second operand 5 states. [2020-10-13 15:38:27,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:27,840 INFO L93 Difference]: Finished difference Result 697 states and 1071 transitions. [2020-10-13 15:38:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:27,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:38:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:27,843 INFO L225 Difference]: With dead ends: 697 [2020-10-13 15:38:27,843 INFO L226 Difference]: Without dead ends: 380 [2020-10-13 15:38:27,844 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 15:38:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-13 15:38:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 363. [2020-10-13 15:38:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-13 15:38:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 557 transitions. [2020-10-13 15:38:27,851 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 557 transitions. Word has length 117 [2020-10-13 15:38:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:27,851 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 557 transitions. [2020-10-13 15:38:27,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 557 transitions. [2020-10-13 15:38:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:27,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:27,852 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 15:38:27,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:38:27,852 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash -122472269, now seen corresponding path program 1 times [2020-10-13 15:38:27,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:27,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271713755] [2020-10-13 15:38:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-13 15:38:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:38:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:28,548 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 15:38:28,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271713755] [2020-10-13 15:38:28,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:28,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:28,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814988178] [2020-10-13 15:38:28,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:28,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:28,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:28,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:28,549 INFO L87 Difference]: Start difference. First operand 363 states and 557 transitions. Second operand 5 states. [2020-10-13 15:38:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:29,284 INFO L93 Difference]: Finished difference Result 731 states and 1127 transitions. [2020-10-13 15:38:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:29,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:29,287 INFO L225 Difference]: With dead ends: 731 [2020-10-13 15:38:29,287 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:38:29,288 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 15:38:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:38:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 363. [2020-10-13 15:38:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-13 15:38:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 556 transitions. [2020-10-13 15:38:29,296 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 556 transitions. Word has length 118 [2020-10-13 15:38:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:29,296 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 556 transitions. [2020-10-13 15:38:29,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 556 transitions. [2020-10-13 15:38:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:29,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:29,297 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 15:38:29,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:38:29,297 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash 585650867, now seen corresponding path program 1 times [2020-10-13 15:38:29,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:29,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109796873] [2020-10-13 15:38:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:29,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:38:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:29,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,989 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 15:38:29,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109796873] [2020-10-13 15:38:29,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:29,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:29,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760153029] [2020-10-13 15:38:29,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:29,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:29,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:29,990 INFO L87 Difference]: Start difference. First operand 363 states and 556 transitions. Second operand 5 states. [2020-10-13 15:38:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:30,755 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2020-10-13 15:38:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:30,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:30,759 INFO L225 Difference]: With dead ends: 731 [2020-10-13 15:38:30,759 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:38:30,760 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 15:38:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:38:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 363. [2020-10-13 15:38:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-13 15:38:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 555 transitions. [2020-10-13 15:38:30,767 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 555 transitions. Word has length 118 [2020-10-13 15:38:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:30,767 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 555 transitions. [2020-10-13 15:38:30,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 555 transitions. [2020-10-13 15:38:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:38:30,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:30,768 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 15:38:30,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:38:30,768 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:30,769 INFO L82 PathProgramCache]: Analyzing trace with hash -802591751, now seen corresponding path program 1 times [2020-10-13 15:38:30,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:30,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921816934] [2020-10-13 15:38:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:38:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:38:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:31,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:31,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:31,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921816934] [2020-10-13 15:38:31,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:31,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:31,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409048373] [2020-10-13 15:38:31,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:31,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:31,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:31,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:31,479 INFO L87 Difference]: Start difference. First operand 363 states and 555 transitions. Second operand 5 states. [2020-10-13 15:38:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:32,370 INFO L93 Difference]: Finished difference Result 786 states and 1213 transitions. [2020-10-13 15:38:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:32,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:38:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:32,373 INFO L225 Difference]: With dead ends: 786 [2020-10-13 15:38:32,373 INFO L226 Difference]: Without dead ends: 448 [2020-10-13 15:38:32,374 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 15:38:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-13 15:38:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 400. [2020-10-13 15:38:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2020-10-13 15:38:32,381 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 119 [2020-10-13 15:38:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:32,382 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2020-10-13 15:38:32,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2020-10-13 15:38:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:38:32,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:32,383 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 15:38:32,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:38:32,383 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 859686553, now seen corresponding path program 1 times [2020-10-13 15:38:32,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:32,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069433966] [2020-10-13 15:38:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:38:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,078 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 15:38:33,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069433966] [2020-10-13 15:38:33,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:33,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:33,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607246307] [2020-10-13 15:38:33,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:33,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:33,080 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand 5 states. [2020-10-13 15:38:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:33,826 INFO L93 Difference]: Finished difference Result 801 states and 1254 transitions. [2020-10-13 15:38:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:33,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:38:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:33,829 INFO L225 Difference]: With dead ends: 801 [2020-10-13 15:38:33,829 INFO L226 Difference]: Without dead ends: 426 [2020-10-13 15:38:33,830 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 15:38:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-13 15:38:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 400. [2020-10-13 15:38:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 622 transitions. [2020-10-13 15:38:33,838 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 622 transitions. Word has length 119 [2020-10-13 15:38:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:33,838 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 622 transitions. [2020-10-13 15:38:33,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 622 transitions. [2020-10-13 15:38:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:38:33,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:33,840 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:33,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:38:33,840 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:33,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1494598930, now seen corresponding path program 1 times [2020-10-13 15:38:33,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:33,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699063219] [2020-10-13 15:38:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:38:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:38:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:34,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:34,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699063219] [2020-10-13 15:38:34,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:34,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:34,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380894809] [2020-10-13 15:38:34,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:34,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:34,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:34,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:34,081 INFO L87 Difference]: Start difference. First operand 400 states and 622 transitions. Second operand 5 states. [2020-10-13 15:38:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:34,826 INFO L93 Difference]: Finished difference Result 801 states and 1252 transitions. [2020-10-13 15:38:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:34,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:38:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:34,829 INFO L225 Difference]: With dead ends: 801 [2020-10-13 15:38:34,829 INFO L226 Difference]: Without dead ends: 426 [2020-10-13 15:38:34,830 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 15:38:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-13 15:38:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 400. [2020-10-13 15:38:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 621 transitions. [2020-10-13 15:38:34,838 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 621 transitions. Word has length 120 [2020-10-13 15:38:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:34,838 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 621 transitions. [2020-10-13 15:38:34,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 621 transitions. [2020-10-13 15:38:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:38:34,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:34,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 15:38:34,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:38:34,839 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2063640084, now seen corresponding path program 1 times [2020-10-13 15:38:34,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:34,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148628808] [2020-10-13 15:38:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:38:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:35,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148628808] [2020-10-13 15:38:35,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:35,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:35,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895627883] [2020-10-13 15:38:35,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:35,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:35,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:35,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:35,141 INFO L87 Difference]: Start difference. First operand 400 states and 621 transitions. Second operand 5 states. [2020-10-13 15:38:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:35,899 INFO L93 Difference]: Finished difference Result 799 states and 1248 transitions. [2020-10-13 15:38:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:35,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:38:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:35,903 INFO L225 Difference]: With dead ends: 799 [2020-10-13 15:38:35,903 INFO L226 Difference]: Without dead ends: 424 [2020-10-13 15:38:35,904 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 15:38:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-13 15:38:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 400. [2020-10-13 15:38:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 620 transitions. [2020-10-13 15:38:35,913 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 620 transitions. Word has length 121 [2020-10-13 15:38:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:35,913 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 620 transitions. [2020-10-13 15:38:35,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 620 transitions. [2020-10-13 15:38:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:38:35,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:35,914 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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 15:38:35,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:38:35,914 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1273034256, now seen corresponding path program 1 times [2020-10-13 15:38:35,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:35,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485340394] [2020-10-13 15:38:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:36,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:36,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485340394] [2020-10-13 15:38:36,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:36,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:36,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779609493] [2020-10-13 15:38:36,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:36,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:36,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:36,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:36,746 INFO L87 Difference]: Start difference. First operand 400 states and 620 transitions. Second operand 5 states. [2020-10-13 15:38:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:37,469 INFO L93 Difference]: Finished difference Result 802 states and 1246 transitions. [2020-10-13 15:38:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:37,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:38:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:37,472 INFO L225 Difference]: With dead ends: 802 [2020-10-13 15:38:37,473 INFO L226 Difference]: Without dead ends: 427 [2020-10-13 15:38:37,473 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 15:38:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-13 15:38:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 400. [2020-10-13 15:38:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 619 transitions. [2020-10-13 15:38:37,482 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 619 transitions. Word has length 121 [2020-10-13 15:38:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:37,482 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 619 transitions. [2020-10-13 15:38:37,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 619 transitions. [2020-10-13 15:38:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:38:37,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:37,484 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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 15:38:37,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:38:37,484 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1999999781, now seen corresponding path program 1 times [2020-10-13 15:38:37,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:37,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241971798] [2020-10-13 15:38:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:38:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:38,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241971798] [2020-10-13 15:38:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:38,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145417250] [2020-10-13 15:38:38,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:38,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:38,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:38,178 INFO L87 Difference]: Start difference. First operand 400 states and 619 transitions. Second operand 5 states. [2020-10-13 15:38:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:38,880 INFO L93 Difference]: Finished difference Result 800 states and 1242 transitions. [2020-10-13 15:38:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:38,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:38:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:38,883 INFO L225 Difference]: With dead ends: 800 [2020-10-13 15:38:38,883 INFO L226 Difference]: Without dead ends: 425 [2020-10-13 15:38:38,884 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 15:38:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-13 15:38:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 400. [2020-10-13 15:38:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 618 transitions. [2020-10-13 15:38:38,892 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 618 transitions. Word has length 122 [2020-10-13 15:38:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:38,892 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 618 transitions. [2020-10-13 15:38:38,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 618 transitions. [2020-10-13 15:38:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:38:38,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:38,894 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:38,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:38:38,894 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:38,894 INFO L82 PathProgramCache]: Analyzing trace with hash 636939100, now seen corresponding path program 1 times [2020-10-13 15:38:38,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:38,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841654423] [2020-10-13 15:38:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,353 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 15:38:39,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841654423] [2020-10-13 15:38:39,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:39,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:39,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515339184] [2020-10-13 15:38:39,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:39,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:39,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:39,354 INFO L87 Difference]: Start difference. First operand 400 states and 618 transitions. Second operand 5 states. [2020-10-13 15:38:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:40,035 INFO L93 Difference]: Finished difference Result 799 states and 1239 transitions. [2020-10-13 15:38:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:40,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:38:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:40,038 INFO L225 Difference]: With dead ends: 799 [2020-10-13 15:38:40,039 INFO L226 Difference]: Without dead ends: 424 [2020-10-13 15:38:40,039 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 15:38:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-13 15:38:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 400. [2020-10-13 15:38:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 617 transitions. [2020-10-13 15:38:40,048 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 617 transitions. Word has length 122 [2020-10-13 15:38:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:40,048 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 617 transitions. [2020-10-13 15:38:40,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 617 transitions. [2020-10-13 15:38:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:38:40,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:40,050 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:40,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:38:40,050 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:40,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1287663615, now seen corresponding path program 1 times [2020-10-13 15:38:40,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:40,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865363842] [2020-10-13 15:38:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,141 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 15:38:45,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865363842] [2020-10-13 15:38:45,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:45,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:45,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043246770] [2020-10-13 15:38:45,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:45,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:45,142 INFO L87 Difference]: Start difference. First operand 400 states and 617 transitions. Second operand 5 states. [2020-10-13 15:38:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:45,846 INFO L93 Difference]: Finished difference Result 798 states and 1236 transitions. [2020-10-13 15:38:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:45,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:38:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:45,850 INFO L225 Difference]: With dead ends: 798 [2020-10-13 15:38:45,850 INFO L226 Difference]: Without dead ends: 423 [2020-10-13 15:38:45,851 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 15:38:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-13 15:38:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 400. [2020-10-13 15:38:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 616 transitions. [2020-10-13 15:38:45,857 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 616 transitions. Word has length 123 [2020-10-13 15:38:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:45,857 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 616 transitions. [2020-10-13 15:38:45,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 616 transitions. [2020-10-13 15:38:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:38:45,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:45,858 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:45,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:38:45,859 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 240152811, now seen corresponding path program 1 times [2020-10-13 15:38:45,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:45,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233784734] [2020-10-13 15:38:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:50,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:50,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:50,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:50,973 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 15:38:50,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233784734] [2020-10-13 15:38:50,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:50,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:50,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74456988] [2020-10-13 15:38:50,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:50,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:50,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:50,975 INFO L87 Difference]: Start difference. First operand 400 states and 616 transitions. Second operand 5 states. [2020-10-13 15:38:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:51,689 INFO L93 Difference]: Finished difference Result 798 states and 1234 transitions. [2020-10-13 15:38:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:51,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:38:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:51,701 INFO L225 Difference]: With dead ends: 798 [2020-10-13 15:38:51,701 INFO L226 Difference]: Without dead ends: 423 [2020-10-13 15:38:51,701 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 15:38:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-13 15:38:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 400. [2020-10-13 15:38:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 615 transitions. [2020-10-13 15:38:51,710 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 615 transitions. Word has length 123 [2020-10-13 15:38:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:51,710 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 615 transitions. [2020-10-13 15:38:51,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 615 transitions. [2020-10-13 15:38:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:38:51,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:51,713 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:51,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:38:51,713 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash -223627690, now seen corresponding path program 1 times [2020-10-13 15:38:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:51,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359824996] [2020-10-13 15:38:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4847 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:56,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,672 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 15:38:56,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359824996] [2020-10-13 15:38:56,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:56,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:56,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49047785] [2020-10-13 15:38:56,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:56,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:56,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:56,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:56,674 INFO L87 Difference]: Start difference. First operand 400 states and 615 transitions. Second operand 5 states. [2020-10-13 15:38:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:57,325 INFO L93 Difference]: Finished difference Result 798 states and 1232 transitions. [2020-10-13 15:38:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:57,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:38:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:57,329 INFO L225 Difference]: With dead ends: 798 [2020-10-13 15:38:57,329 INFO L226 Difference]: Without dead ends: 423 [2020-10-13 15:38:57,330 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 15:38:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-13 15:38:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 400. [2020-10-13 15:38:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:38:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 614 transitions. [2020-10-13 15:38:57,337 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 614 transitions. Word has length 124 [2020-10-13 15:38:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:57,338 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 614 transitions. [2020-10-13 15:38:57,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 614 transitions. [2020-10-13 15:38:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:38:57,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:57,339 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:57,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:38:57,339 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:57,340 INFO L82 PathProgramCache]: Analyzing trace with hash 957276774, now seen corresponding path program 1 times [2020-10-13 15:38:57,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:57,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712607771] [2020-10-13 15:38:57,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:02,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712607771] [2020-10-13 15:39:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:02,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:02,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607183679] [2020-10-13 15:39:02,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:02,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:02,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:02,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:02,441 INFO L87 Difference]: Start difference. First operand 400 states and 614 transitions. Second operand 5 states. [2020-10-13 15:39:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:03,134 INFO L93 Difference]: Finished difference Result 798 states and 1230 transitions. [2020-10-13 15:39:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:03,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:39:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:03,138 INFO L225 Difference]: With dead ends: 798 [2020-10-13 15:39:03,138 INFO L226 Difference]: Without dead ends: 423 [2020-10-13 15:39:03,138 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 15:39:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-13 15:39:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 400. [2020-10-13 15:39:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:39:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 613 transitions. [2020-10-13 15:39:03,148 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 613 transitions. Word has length 125 [2020-10-13 15:39:03,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:03,148 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 613 transitions. [2020-10-13 15:39:03,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 613 transitions. [2020-10-13 15:39:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:39:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:03,149 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:03,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:39:03,150 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1583807601, now seen corresponding path program 1 times [2020-10-13 15:39:03,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:03,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523727773] [2020-10-13 15:39:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:08,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:08,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523727773] [2020-10-13 15:39:08,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:08,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:08,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036745051] [2020-10-13 15:39:08,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:08,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:08,242 INFO L87 Difference]: Start difference. First operand 400 states and 613 transitions. Second operand 5 states. [2020-10-13 15:39:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:08,911 INFO L93 Difference]: Finished difference Result 788 states and 1216 transitions. [2020-10-13 15:39:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:08,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:39:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:08,915 INFO L225 Difference]: With dead ends: 788 [2020-10-13 15:39:08,915 INFO L226 Difference]: Without dead ends: 413 [2020-10-13 15:39:08,916 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 15:39:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-13 15:39:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 400. [2020-10-13 15:39:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 15:39:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 612 transitions. [2020-10-13 15:39:08,922 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 612 transitions. Word has length 126 [2020-10-13 15:39:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:08,922 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 612 transitions. [2020-10-13 15:39:08,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 612 transitions. [2020-10-13 15:39:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:39:08,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:08,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:08,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:39:08,923 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1383777891, now seen corresponding path program 1 times [2020-10-13 15:39:08,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:08,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920074958] [2020-10-13 15:39:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:39:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:39:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:09,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920074958] [2020-10-13 15:39:09,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:09,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:09,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683451700] [2020-10-13 15:39:09,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:09,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:09,151 INFO L87 Difference]: Start difference. First operand 400 states and 612 transitions. Second operand 5 states. [2020-10-13 15:39:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:10,126 INFO L93 Difference]: Finished difference Result 878 states and 1354 transitions. [2020-10-13 15:39:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:10,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:39:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:10,129 INFO L225 Difference]: With dead ends: 878 [2020-10-13 15:39:10,129 INFO L226 Difference]: Without dead ends: 503 [2020-10-13 15:39:10,129 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 15:39:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-13 15:39:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 439. [2020-10-13 15:39:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 15:39:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 684 transitions. [2020-10-13 15:39:10,136 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 684 transitions. Word has length 127 [2020-10-13 15:39:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:10,137 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 684 transitions. [2020-10-13 15:39:10,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 684 transitions. [2020-10-13 15:39:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:39:10,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:10,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:10,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:39:10,138 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash 330240146, now seen corresponding path program 1 times [2020-10-13 15:39:10,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:10,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321574267] [2020-10-13 15:39:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2372 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:39:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:12,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:12,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321574267] [2020-10-13 15:39:12,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:12,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:12,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857148763] [2020-10-13 15:39:12,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:12,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:12,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:12,599 INFO L87 Difference]: Start difference. First operand 439 states and 684 transitions. Second operand 5 states. [2020-10-13 15:39:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:13,317 INFO L93 Difference]: Finished difference Result 888 states and 1387 transitions. [2020-10-13 15:39:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:13,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:39:13,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:13,320 INFO L225 Difference]: With dead ends: 888 [2020-10-13 15:39:13,320 INFO L226 Difference]: Without dead ends: 474 [2020-10-13 15:39:13,321 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 15:39:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-13 15:39:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 439. [2020-10-13 15:39:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 15:39:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 683 transitions. [2020-10-13 15:39:13,329 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 683 transitions. Word has length 128 [2020-10-13 15:39:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:13,329 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 683 transitions. [2020-10-13 15:39:13,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 683 transitions. [2020-10-13 15:39:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:39:13,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:13,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:13,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:39:13,331 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash -59061127, now seen corresponding path program 1 times [2020-10-13 15:39:13,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:13,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660170274] [2020-10-13 15:39:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:13,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:39:13,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:39:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:13,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660170274] [2020-10-13 15:39:13,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:13,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:13,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073384092] [2020-10-13 15:39:13,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:13,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:13,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:13,558 INFO L87 Difference]: Start difference. First operand 439 states and 683 transitions. Second operand 5 states. [2020-10-13 15:39:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:14,558 INFO L93 Difference]: Finished difference Result 911 states and 1416 transitions. [2020-10-13 15:39:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:14,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:39:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:14,560 INFO L225 Difference]: With dead ends: 911 [2020-10-13 15:39:14,560 INFO L226 Difference]: Without dead ends: 497 [2020-10-13 15:39:14,561 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 15:39:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-13 15:39:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 438. [2020-10-13 15:39:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-13 15:39:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 682 transitions. [2020-10-13 15:39:14,568 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 682 transitions. Word has length 128 [2020-10-13 15:39:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:14,568 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 682 transitions. [2020-10-13 15:39:14,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 682 transitions. [2020-10-13 15:39:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:39:14,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:14,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:14,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 15:39:14,570 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 456866425, now seen corresponding path program 1 times [2020-10-13 15:39:14,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:14,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271705210] [2020-10-13 15:39:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:39:17,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2934 [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:39:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:17,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271705210] [2020-10-13 15:39:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:17,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486435597] [2020-10-13 15:39:17,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:17,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:17,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:17,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:17,587 INFO L87 Difference]: Start difference. First operand 438 states and 682 transitions. Second operand 5 states. [2020-10-13 15:39:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:18,312 INFO L93 Difference]: Finished difference Result 884 states and 1381 transitions. [2020-10-13 15:39:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:18,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:39:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:18,317 INFO L225 Difference]: With dead ends: 884 [2020-10-13 15:39:18,317 INFO L226 Difference]: Without dead ends: 471 [2020-10-13 15:39:18,318 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 15:39:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-13 15:39:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 438. [2020-10-13 15:39:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-13 15:39:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 681 transitions. [2020-10-13 15:39:18,325 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 681 transitions. Word has length 129 [2020-10-13 15:39:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:18,325 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 681 transitions. [2020-10-13 15:39:18,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 681 transitions. [2020-10-13 15:39:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:39:18,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:18,326 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:18,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 15:39:18,326 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1201161990, now seen corresponding path program 1 times [2020-10-13 15:39:18,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:18,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009942203] [2020-10-13 15:39:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:19,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:39:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:19,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:19,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:19,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009942203] [2020-10-13 15:39:19,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:19,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:19,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865033379] [2020-10-13 15:39:19,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:19,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:19,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:19,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:19,527 INFO L87 Difference]: Start difference. First operand 438 states and 681 transitions. Second operand 5 states. [2020-10-13 15:39:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:20,315 INFO L93 Difference]: Finished difference Result 883 states and 1378 transitions. [2020-10-13 15:39:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:20,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:39:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:20,318 INFO L225 Difference]: With dead ends: 883 [2020-10-13 15:39:20,318 INFO L226 Difference]: Without dead ends: 470 [2020-10-13 15:39:20,319 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 15:39:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-13 15:39:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 438. [2020-10-13 15:39:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-13 15:39:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 680 transitions. [2020-10-13 15:39:20,326 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 680 transitions. Word has length 129 [2020-10-13 15:39:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:20,326 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 680 transitions. [2020-10-13 15:39:20,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 680 transitions. [2020-10-13 15:39:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:39:20,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:20,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:20,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 15:39:20,328 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:20,328 INFO L82 PathProgramCache]: Analyzing trace with hash -968011677, now seen corresponding path program 1 times [2020-10-13 15:39:20,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:20,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309716646] [2020-10-13 15:39:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking...