/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.13.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:37:10,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:37:10,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:37:10,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:37:10,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:37:10,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:37:10,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:37:10,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:37:10,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:37:10,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:37:10,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:37:10,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:37:10,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:37:10,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:37:10,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:37:10,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:37:10,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:37:10,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:37:10,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:37:10,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:37:10,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:37:10,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:37:10,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:37:10,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:37:10,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:37:10,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:37:10,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:37:10,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:37:10,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:37:10,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:37:10,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:37:10,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:37:10,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:37:10,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:37:10,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:37:10,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:37:10,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:37:10,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:37:10,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:37:10,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:37:10,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:37:10,837 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 15:37:10,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:37:10,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:37:10,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:37:10,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:37:10,894 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:37:10,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:37:10,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:37:10,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:37:10,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:37:10,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:37:10,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:37:10,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:37:10,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:37:10,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:37:10,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:37:10,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:37:10,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:37:10,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:37:10,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:37:10,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:37:10,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:37:10,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:37:10,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:37:10,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:37:10,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:37:10,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:37:10,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:37:10,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:37:10,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:37:10,901 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 15:37:11,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:37:11,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:37:11,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:37:11,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:37:11,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:37:11,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-13 15:37:11,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2449bccae/dc0f8658829d48e0b59eee99eef7de9f/FLAGfdd82e7c4 [2020-10-13 15:37:11,909 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:37:11,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-13 15:37:11,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2449bccae/dc0f8658829d48e0b59eee99eef7de9f/FLAGfdd82e7c4 [2020-10-13 15:37:12,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2449bccae/dc0f8658829d48e0b59eee99eef7de9f [2020-10-13 15:37:12,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:37:12,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:37:12,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:37:12,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:37:12,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:37:12,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:37:12" (1/1) ... [2020-10-13 15:37:12,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ffa8910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:12, skipping insertion in model container [2020-10-13 15:37:12,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:37:12" (1/1) ... [2020-10-13 15:37:12,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:37:12,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:37:12,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:37:12,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:37:12,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:37:12,999 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:37:13,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13 WrapperNode [2020-10-13 15:37:13,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:37:13,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:37:13,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:37:13,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:37:13,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (1/1) ... [2020-10-13 15:37:13,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:37:13,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:37:13,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:37:13,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:37:13,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (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 15:37:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:37:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:37:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:37:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:37:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:37:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:37:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:37:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:37:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:37:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:37:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:37:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:37:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:37:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:37:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:37:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:37:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:37:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:37:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:37:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:37:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:37:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:37:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:37:13,762 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:37:14,399 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:37:14,399 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:37:14,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:37:14,423 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:37:14,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:37:14 BoogieIcfgContainer [2020-10-13 15:37:14,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:37:14,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:37:14,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:37:14,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:37:14,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:37:12" (1/3) ... [2020-10-13 15:37:14,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b8ae90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:37:14, skipping insertion in model container [2020-10-13 15:37:14,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:37:13" (2/3) ... [2020-10-13 15:37:14,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b8ae90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:37:14, skipping insertion in model container [2020-10-13 15:37:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:37:14" (3/3) ... [2020-10-13 15:37:14,436 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-2.c [2020-10-13 15:37:14,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:37:14,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:37:14,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:37:14,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:37:14,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:37:14,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:37:14,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:37:14,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:37:14,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:37:14,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:37:14,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:37:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:37:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 15:37:14,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:14,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:14,530 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-13 15:37:14,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:14,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250672330] [2020-10-13 15:37:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:37:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-13 15:37:16,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:37:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:37:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:16,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 15:37:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:37:16,431 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 15:37:16,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250672330] [2020-10-13 15:37:16,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:16,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:16,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402345114] [2020-10-13 15:37:16,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:16,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:16,472 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:37:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:17,455 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:37:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:17,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-13 15:37:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:17,473 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:37:17,474 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:37:17,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:37:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:37:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:37:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:37:17,555 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 41 [2020-10-13 15:37:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:17,556 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:37:17,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:37:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:37:17,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:17,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:17,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:37:17,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1703145427, now seen corresponding path program 1 times [2020-10-13 15:37:17,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:17,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110929032] [2020-10-13 15:37:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 15:37:18,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-13 15:37:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:37:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:18,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,748 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 15:37:18,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110929032] [2020-10-13 15:37:18,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:18,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:18,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122908879] [2020-10-13 15:37:18,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:18,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:18,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:18,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:18,752 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:37:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:19,561 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:37:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:19,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 15:37:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:19,564 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:37:19,564 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:37:19,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:37:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:37:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:37:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:37:19,579 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-13 15:37:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:19,579 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:37:19,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:37:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:37:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:19,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:19,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:37:19,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:19,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1599562843, now seen corresponding path program 1 times [2020-10-13 15:37:19,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:19,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782380010] [2020-10-13 15:37:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:37:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:37:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:24,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:24,705 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 15:37:24,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782380010] [2020-10-13 15:37:24,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:24,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:24,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095958210] [2020-10-13 15:37:24,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:24,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:24,708 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:37:25,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:25,379 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:37:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:25,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:37:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:25,382 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:37:25,382 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:37:25,383 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 15:37:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:37:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:37:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:37:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:37:25,395 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 55 [2020-10-13 15:37:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:25,396 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:37:25,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:37:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:37:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:25,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:25,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:37:25,398 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1829825297, now seen corresponding path program 1 times [2020-10-13 15:37:25,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:25,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193053900] [2020-10-13 15:37:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:37:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:37:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:37:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:37:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:37:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,516 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 15:37:30,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193053900] [2020-10-13 15:37:30,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:30,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:37:30,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667901186] [2020-10-13 15:37:30,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:37:30,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:30,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:37:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:30,518 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:37:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:31,171 INFO L93 Difference]: Finished difference Result 289 states and 439 transitions. [2020-10-13 15:37:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:37:31,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 15:37:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:31,173 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:37:31,173 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:37:31,174 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 15:37:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:37:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 15:37:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:37:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 241 transitions. [2020-10-13 15:37:31,184 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 241 transitions. Word has length 55 [2020-10-13 15:37:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:31,185 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 241 transitions. [2020-10-13 15:37:31,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:37:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 241 transitions. [2020-10-13 15:37:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:37:31,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:31,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:31,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:37:31,187 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:31,188 INFO L82 PathProgramCache]: Analyzing trace with hash -667714460, now seen corresponding path program 1 times [2020-10-13 15:37:31,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:31,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336268970] [2020-10-13 15:37:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:37:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-13 15:37:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:37:31,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:37:31,828 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 15:37:31,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336268970] [2020-10-13 15:37:31,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:31,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:31,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539833328] [2020-10-13 15:37:31,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:31,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:31,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:31,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:31,832 INFO L87 Difference]: Start difference. First operand 161 states and 241 transitions. Second operand 5 states. [2020-10-13 15:37:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:32,600 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-10-13 15:37:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:32,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:37:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:32,602 INFO L225 Difference]: With dead ends: 320 [2020-10-13 15:37:32,602 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 15:37:32,603 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 15:37:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 15:37:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2020-10-13 15:37:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:37:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 240 transitions. [2020-10-13 15:37:32,612 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 240 transitions. Word has length 55 [2020-10-13 15:37:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:32,612 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 240 transitions. [2020-10-13 15:37:32,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 240 transitions. [2020-10-13 15:37:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:37:32,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:32,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:32,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:37:32,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1983721381, now seen corresponding path program 1 times [2020-10-13 15:37:32,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:32,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584925979] [2020-10-13 15:37:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:37:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-13 15:37:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:37:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,109 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 15:37:33,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584925979] [2020-10-13 15:37:33,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:33,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:33,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617517449] [2020-10-13 15:37:33,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:33,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:33,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:33,111 INFO L87 Difference]: Start difference. First operand 161 states and 240 transitions. Second operand 5 states. [2020-10-13 15:37:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:33,879 INFO L93 Difference]: Finished difference Result 319 states and 475 transitions. [2020-10-13 15:37:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:33,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:37:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:33,881 INFO L225 Difference]: With dead ends: 319 [2020-10-13 15:37:33,881 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:37:33,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:37:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-13 15:37:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:37:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2020-10-13 15:37:33,889 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 55 [2020-10-13 15:37:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:33,889 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2020-10-13 15:37:33,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2020-10-13 15:37:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:37:33,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:33,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:33,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:37:33,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:33,891 INFO L82 PathProgramCache]: Analyzing trace with hash 347904974, now seen corresponding path program 1 times [2020-10-13 15:37:33,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:33,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645877540] [2020-10-13 15:37:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:38,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:38,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:37:38,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:38,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:38,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:38,979 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 15:37:38,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645877540] [2020-10-13 15:37:38,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:38,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:38,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957670882] [2020-10-13 15:37:38,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:38,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:38,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:38,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:38,986 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand 5 states. [2020-10-13 15:37:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:39,700 INFO L93 Difference]: Finished difference Result 310 states and 463 transitions. [2020-10-13 15:37:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:39,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 15:37:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:39,702 INFO L225 Difference]: With dead ends: 310 [2020-10-13 15:37:39,702 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:37:39,703 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 15:37:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:37:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2020-10-13 15:37:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:37:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 238 transitions. [2020-10-13 15:37:39,714 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 238 transitions. Word has length 56 [2020-10-13 15:37:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:39,715 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 238 transitions. [2020-10-13 15:37:39,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 238 transitions. [2020-10-13 15:37:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:37:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:39,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:39,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:37:39,721 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash -439021250, now seen corresponding path program 1 times [2020-10-13 15:37:39,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:39,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935086329] [2020-10-13 15:37:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:37:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:37:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:37:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:37:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:37:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:44,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:44,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:37:44,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:37:44,879 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 15:37:44,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935086329] [2020-10-13 15:37:44,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:44,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:37:44,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591840822] [2020-10-13 15:37:44,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:37:44,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:37:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:44,883 INFO L87 Difference]: Start difference. First operand 161 states and 238 transitions. Second operand 6 states. [2020-10-13 15:37:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:46,278 INFO L93 Difference]: Finished difference Result 426 states and 643 transitions. [2020-10-13 15:37:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:37:46,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 15:37:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:46,281 INFO L225 Difference]: With dead ends: 426 [2020-10-13 15:37:46,281 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:37:46,282 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 15:37:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:37:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 178. [2020-10-13 15:37:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:37:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2020-10-13 15:37:46,293 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 56 [2020-10-13 15:37:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:46,293 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2020-10-13 15:37:46,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:37:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2020-10-13 15:37:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:37:46,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:46,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:46,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:37:46,295 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:46,295 INFO L82 PathProgramCache]: Analyzing trace with hash 513157471, now seen corresponding path program 1 times [2020-10-13 15:37:46,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:46,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723745686] [2020-10-13 15:37:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:37:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3938 [2020-10-13 15:37:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:37:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,314 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 15:37:50,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723745686] [2020-10-13 15:37:50,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:50,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:50,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772046143] [2020-10-13 15:37:50,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:50,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:50,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:50,316 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand 5 states. [2020-10-13 15:37:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:50,964 INFO L93 Difference]: Finished difference Result 344 states and 516 transitions. [2020-10-13 15:37:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:50,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 15:37:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:50,966 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:37:50,966 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:37:50,967 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 15:37:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:37:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:37:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:37:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:37:50,975 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:37:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:50,976 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:37:50,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:37:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:37:50,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:50,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:50,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:37:50,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:50,977 INFO L82 PathProgramCache]: Analyzing trace with hash -592219372, now seen corresponding path program 1 times [2020-10-13 15:37:50,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:50,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166697856] [2020-10-13 15:37:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:55,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:37:55,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:37:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:37:55,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:37:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:37:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:56,072 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 15:37:56,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166697856] [2020-10-13 15:37:56,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:56,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:37:56,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989844312] [2020-10-13 15:37:56,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:37:56,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:37:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:56,075 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 6 states. [2020-10-13 15:37:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:56,650 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2020-10-13 15:37:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:37:56,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 15:37:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:56,653 INFO L225 Difference]: With dead ends: 350 [2020-10-13 15:37:56,653 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:37:56,654 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 15:37:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:37:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-10-13 15:37:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:37:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:37:56,661 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:37:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:56,662 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:37:56,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:37:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:37:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:37:56,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:56,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:56,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:37:56,663 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash 58982985, now seen corresponding path program 1 times [2020-10-13 15:37:56,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:56,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886534896] [2020-10-13 15:37:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3360 [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:00,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:00,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:00,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:00,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:00,097 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 15:38:00,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886534896] [2020-10-13 15:38:00,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:00,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:00,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388519841] [2020-10-13 15:38:00,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:00,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:00,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:00,099 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 5 states. [2020-10-13 15:38:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:00,706 INFO L93 Difference]: Finished difference Result 344 states and 515 transitions. [2020-10-13 15:38:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:00,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:38:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:00,708 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:38:00,708 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:38:00,711 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 15:38:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:38:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:38:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:38:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2020-10-13 15:38:00,719 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 58 [2020-10-13 15:38:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:00,719 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2020-10-13 15:38:00,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2020-10-13 15:38:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:38:00,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:00,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:00,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:38:00,730 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:00,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:00,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-13 15:38:00,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:00,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284829434] [2020-10-13 15:38:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:01,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:38:01,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-13 15:38:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:38:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:01,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:01,350 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 15:38:01,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284829434] [2020-10-13 15:38:01,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:01,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:01,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953654748] [2020-10-13 15:38:01,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:01,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:01,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:01,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:01,353 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand 5 states. [2020-10-13 15:38:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:02,006 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:38:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:02,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:38:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:02,009 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:38:02,010 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 15:38:02,011 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 15:38:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 15:38:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-13 15:38:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 15:38:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2020-10-13 15:38:02,019 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 58 [2020-10-13 15:38:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:02,019 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2020-10-13 15:38:02,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2020-10-13 15:38:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:38:02,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:02,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:02,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:38:02,021 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1364844477, now seen corresponding path program 1 times [2020-10-13 15:38:02,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:02,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997265653] [2020-10-13 15:38:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:07,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:38:07,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:38:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:38:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:38:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:38:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:07,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:07,118 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 15:38:07,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997265653] [2020-10-13 15:38:07,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:07,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:38:07,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158554708] [2020-10-13 15:38:07,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:38:07,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:07,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:38:07,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:07,120 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2020-10-13 15:38:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:08,285 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-10-13 15:38:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:38:08,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 15:38:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:08,288 INFO L225 Difference]: With dead ends: 487 [2020-10-13 15:38:08,288 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:38:08,288 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 15:38:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:38:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 196. [2020-10-13 15:38:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:38:08,296 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 58 [2020-10-13 15:38:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:08,297 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:38:08,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:38:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:38:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:38:08,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:08,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:08,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:38:08,298 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1877408506, now seen corresponding path program 1 times [2020-10-13 15:38:08,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:08,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054197481] [2020-10-13 15:38:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3074 [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:11,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,438 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 15:38:11,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054197481] [2020-10-13 15:38:11,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:11,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:11,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016516222] [2020-10-13 15:38:11,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:11,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:11,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:11,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:11,440 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:38:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:11,968 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:38:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:11,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:38:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:11,971 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:38:11,971 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:38:11,972 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 15:38:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:38:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:38:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:38:11,979 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 59 [2020-10-13 15:38:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:11,980 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:38:11,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:38:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:38:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:11,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:11,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:38:11,981 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash -304046809, now seen corresponding path program 1 times [2020-10-13 15:38:11,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:11,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037245000] [2020-10-13 15:38:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:12,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,486 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 15:38:12,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037245000] [2020-10-13 15:38:12,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:12,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:12,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267735369] [2020-10-13 15:38:12,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:12,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:12,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:12,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:12,488 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:38:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:13,103 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-13 15:38:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:13,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:38:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:13,106 INFO L225 Difference]: With dead ends: 397 [2020-10-13 15:38:13,107 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:38:13,108 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 15:38:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:38:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2020-10-13 15:38:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:38:13,115 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 71 [2020-10-13 15:38:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:13,116 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:38:13,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:38:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:38:13,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:13,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:13,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:38:13,117 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash -493854329, now seen corresponding path program 1 times [2020-10-13 15:38:13,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:13,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814025894] [2020-10-13 15:38:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:18,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,192 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 15:38:18,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814025894] [2020-10-13 15:38:18,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:18,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:18,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134613411] [2020-10-13 15:38:18,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:18,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:18,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:18,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:18,194 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:38:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:18,746 INFO L93 Difference]: Finished difference Result 387 states and 579 transitions. [2020-10-13 15:38:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:18,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:38:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:18,747 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:38:18,748 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:38:18,748 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 15:38:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:38:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 196. [2020-10-13 15:38:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:38:18,755 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 72 [2020-10-13 15:38:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:18,755 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:38:18,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:38:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:38:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:18,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:18,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:38:18,757 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1533835664, now seen corresponding path program 1 times [2020-10-13 15:38:18,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:18,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158011030] [2020-10-13 15:38:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:38:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-13 15:38:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:19,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:19,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:19,398 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 15:38:19,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158011030] [2020-10-13 15:38:19,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:19,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:19,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910367888] [2020-10-13 15:38:19,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:19,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:19,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:19,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:19,401 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:38:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:19,946 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:38:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:19,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:38:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:19,948 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:38:19,948 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:38:19,949 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 15:38:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:38:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:38:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:38:19,955 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 72 [2020-10-13 15:38:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:19,956 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:38:19,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:38:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:38:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:19,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:19,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:38:19,957 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash -109695791, now seen corresponding path program 1 times [2020-10-13 15:38:19,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:19,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690179910] [2020-10-13 15:38:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:38:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 15:38:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:20,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,364 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 15:38:20,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690179910] [2020-10-13 15:38:20,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:20,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:20,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872999634] [2020-10-13 15:38:20,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:20,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:20,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:20,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:20,365 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:38:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:20,906 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:38:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:20,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:38:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:20,909 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:38:20,909 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:38:20,910 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 15:38:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:38:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:38:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:38:20,916 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 72 [2020-10-13 15:38:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:20,916 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:38:20,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:38:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:38:20,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:20,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:20,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:38:20,918 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash -123517918, now seen corresponding path program 1 times [2020-10-13 15:38:20,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:20,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219689683] [2020-10-13 15:38:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,996 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 15:38:25,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219689683] [2020-10-13 15:38:25,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:25,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:25,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016488999] [2020-10-13 15:38:25,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:25,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:25,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:25,998 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:38:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:26,533 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:38:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:26,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 15:38:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:26,535 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:38:26,535 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:38:26,536 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 15:38:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:38:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:38:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:38:26,541 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 73 [2020-10-13 15:38:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:26,542 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:38:26,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:38:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 15:38:26,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:26,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:26,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:38:26,543 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:26,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1216050293, now seen corresponding path program 1 times [2020-10-13 15:38:26,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:26,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153015904] [2020-10-13 15:38:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:31,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:31,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,626 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 15:38:31,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153015904] [2020-10-13 15:38:31,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:31,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:31,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85177824] [2020-10-13 15:38:31,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:31,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:31,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:31,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:31,628 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:38:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:32,175 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:38:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:32,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 15:38:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:32,178 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:38:32,178 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:38:32,179 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 15:38:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:38:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:38:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:38:32,185 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 74 [2020-10-13 15:38:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:32,186 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:38:32,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:38:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:38:32,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:32,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:32,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:38:32,187 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2006850147, now seen corresponding path program 1 times [2020-10-13 15:38:32,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:32,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649386641] [2020-10-13 15:38:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:37,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:37,266 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 15:38:37,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649386641] [2020-10-13 15:38:37,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:37,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:37,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925031302] [2020-10-13 15:38:37,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:37,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:37,268 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:38:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:37,792 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:38:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:37,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-13 15:38:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:37,795 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:38:37,795 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:38:37,796 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 15:38:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:38:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:38:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:38:37,801 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 75 [2020-10-13 15:38:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:37,802 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:38:37,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:38:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:38:37,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:37,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:37,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:38:37,803 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2033876442, now seen corresponding path program 1 times [2020-10-13 15:38:37,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:37,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763772076] [2020-10-13 15:38:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 15:38:42,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:42,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,876 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 15:38:42,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763772076] [2020-10-13 15:38:42,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:42,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:42,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442768184] [2020-10-13 15:38:42,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:42,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:42,879 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:38:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:43,415 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:38:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:43,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 15:38:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:43,418 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:38:43,418 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:38:43,419 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 15:38:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:38:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:38:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:38:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:38:43,424 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 76 [2020-10-13 15:38:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:43,425 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:38:43,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:38:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:38:43,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:43,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:43,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:38:43,427 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:43,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-13 15:38:43,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:43,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839802387] [2020-10-13 15:38:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:43,691 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 15:38:43,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839802387] [2020-10-13 15:38:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:43,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220982837] [2020-10-13 15:38:43,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:43,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:43,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:43,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:43,692 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 5 states. [2020-10-13 15:38:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:44,534 INFO L93 Difference]: Finished difference Result 482 states and 715 transitions. [2020-10-13 15:38:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:44,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:38:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:44,537 INFO L225 Difference]: With dead ends: 482 [2020-10-13 15:38:44,537 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:38:44,538 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 15:38:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:38:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 225. [2020-10-13 15:38:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 15:38:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-13 15:38:44,545 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 80 [2020-10-13 15:38:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:44,545 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-13 15:38:44,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-13 15:38:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:38:44,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:44,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:44,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:38:44,547 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:44,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1028668226, now seen corresponding path program 1 times [2020-10-13 15:38:44,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:44,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509302145] [2020-10-13 15:38:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,159 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 15:38:45,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509302145] [2020-10-13 15:38:45,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:45,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:45,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687500462] [2020-10-13 15:38:45,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:45,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:45,161 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 5 states. [2020-10-13 15:38:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:45,866 INFO L93 Difference]: Finished difference Result 484 states and 730 transitions. [2020-10-13 15:38:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:45,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:38:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:45,874 INFO L225 Difference]: With dead ends: 484 [2020-10-13 15:38:45,874 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:38:45,875 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 15:38:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:38:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-13 15:38:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:38:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 377 transitions. [2020-10-13 15:38:45,882 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 377 transitions. Word has length 80 [2020-10-13 15:38:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:45,882 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 377 transitions. [2020-10-13 15:38:45,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 377 transitions. [2020-10-13 15:38:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:38:45,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:45,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:45,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:38:45,884 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 354143499, now seen corresponding path program 1 times [2020-10-13 15:38:45,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:45,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209870804] [2020-10-13 15:38:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:38:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 15:38:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:38:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,163 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 15:38:46,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209870804] [2020-10-13 15:38:46,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:46,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:46,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018117138] [2020-10-13 15:38:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:46,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:46,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:46,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:46,165 INFO L87 Difference]: Start difference. First operand 249 states and 377 transitions. Second operand 5 states. [2020-10-13 15:38:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:46,886 INFO L93 Difference]: Finished difference Result 551 states and 836 transitions. [2020-10-13 15:38:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:46,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:38:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:46,889 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:38:46,890 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:38:46,891 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 15:38:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:38:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-10-13 15:38:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:38:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-13 15:38:46,899 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 81 [2020-10-13 15:38:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:46,899 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-13 15:38:46,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-13 15:38:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:38:46,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:46,901 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 15:38:46,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:38:46,901 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash -575667458, now seen corresponding path program 1 times [2020-10-13 15:38:46,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:46,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068445191] [2020-10-13 15:38:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:38:47,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:38:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,185 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 15:38:47,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068445191] [2020-10-13 15:38:47,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:47,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:47,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966120769] [2020-10-13 15:38:47,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:47,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:47,187 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 5 states. [2020-10-13 15:38:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:47,909 INFO L93 Difference]: Finished difference Result 552 states and 836 transitions. [2020-10-13 15:38:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:47,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:38:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:47,911 INFO L225 Difference]: With dead ends: 552 [2020-10-13 15:38:47,911 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:38:47,912 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 15:38:47,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:38:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 260. [2020-10-13 15:38:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 15:38:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-13 15:38:47,920 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 86 [2020-10-13 15:38:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:47,920 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-13 15:38:47,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-13 15:38:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:38:47,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:47,922 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 15:38:47,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:38:47,922 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash -673156732, now seen corresponding path program 1 times [2020-10-13 15:38:47,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:47,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42186168] [2020-10-13 15:38:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:38:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,202 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 15:38:48,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42186168] [2020-10-13 15:38:48,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:48,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:48,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88285485] [2020-10-13 15:38:48,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:48,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:48,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:48,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:48,204 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-13 15:38:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:48,923 INFO L93 Difference]: Finished difference Result 556 states and 847 transitions. [2020-10-13 15:38:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:48,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:38:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:48,925 INFO L225 Difference]: With dead ends: 556 [2020-10-13 15:38:48,925 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:38:48,926 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 15:38:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:38:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:38:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:38:48,933 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 87 [2020-10-13 15:38:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:48,933 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:38:48,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:38:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:38:48,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:48,935 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:48,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:38:48,935 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:48,935 INFO L82 PathProgramCache]: Analyzing trace with hash 785749009, now seen corresponding path program 1 times [2020-10-13 15:38:48,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:48,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047853757] [2020-10-13 15:38:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:38:49,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:49,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:49,660 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 15:38:49,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047853757] [2020-10-13 15:38:49,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:49,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:49,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126261568] [2020-10-13 15:38:49,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:49,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:49,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:49,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:49,662 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:38:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:50,422 INFO L93 Difference]: Finished difference Result 557 states and 847 transitions. [2020-10-13 15:38:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:50,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:38:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:50,425 INFO L225 Difference]: With dead ends: 557 [2020-10-13 15:38:50,426 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:38:50,427 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 15:38:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:38:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:38:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:38:50,434 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 93 [2020-10-13 15:38:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:50,434 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:38:50,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:38:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:38:50,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:50,436 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:50,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:38:50,436 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:50,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1580945585, now seen corresponding path program 1 times [2020-10-13 15:38:50,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:50,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004597357] [2020-10-13 15:38:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:51,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:51,156 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 15:38:51,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004597357] [2020-10-13 15:38:51,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:51,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:51,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495708949] [2020-10-13 15:38:51,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:51,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:51,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:51,158 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:38:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:51,862 INFO L93 Difference]: Finished difference Result 532 states and 811 transitions. [2020-10-13 15:38:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:51,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:38:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:51,865 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:38:51,865 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:38:51,866 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 15:38:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:38:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:38:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:38:51,873 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 93 [2020-10-13 15:38:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:51,873 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:38:51,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:38:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:38:51,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:51,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:51,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:38:51,875 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:51,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1069922339, now seen corresponding path program 1 times [2020-10-13 15:38:51,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:51,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794949286] [2020-10-13 15:38:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:38:56,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:56,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,965 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 15:38:56,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794949286] [2020-10-13 15:38:56,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:56,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:56,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060480421] [2020-10-13 15:38:56,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:56,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:56,967 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:38:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:57,698 INFO L93 Difference]: Finished difference Result 547 states and 830 transitions. [2020-10-13 15:38:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:57,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:38:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:57,704 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:38:57,705 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:38:57,705 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 15:38:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:38:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 261. [2020-10-13 15:38:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:38:57,712 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 94 [2020-10-13 15:38:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:57,712 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:38:57,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:38:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:38:57,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:57,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:57,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:38:57,714 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash 957767654, now seen corresponding path program 1 times [2020-10-13 15:38:57,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:57,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405336111] [2020-10-13 15:38:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:38:58,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:58,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-13 15:38:58,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:58,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:58,490 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 15:38:58,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405336111] [2020-10-13 15:38:58,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:58,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:58,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861475206] [2020-10-13 15:38:58,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:58,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:58,492 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:38:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:59,262 INFO L93 Difference]: Finished difference Result 545 states and 826 transitions. [2020-10-13 15:38:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:59,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:38:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:59,265 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:38:59,265 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:38:59,266 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 15:38:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:38:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:38:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:38:59,273 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 94 [2020-10-13 15:38:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:59,273 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:38:59,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:38:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:38:59,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:59,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:59,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:38:59,275 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:59,275 INFO L82 PathProgramCache]: Analyzing trace with hash -685763801, now seen corresponding path program 1 times [2020-10-13 15:38:59,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:59,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708457322] [2020-10-13 15:38:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:59,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:38:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:59,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:59,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:59,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:38:59,945 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 15:38:59,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708457322] [2020-10-13 15:38:59,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:59,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:59,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784831456] [2020-10-13 15:38:59,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:59,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:59,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:59,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:59,948 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:39:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:00,697 INFO L93 Difference]: Finished difference Result 544 states and 823 transitions. [2020-10-13 15:39:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:00,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:39:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:00,701 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:39:00,701 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:39:00,702 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 15:39:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:39:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:39:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:39:00,710 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 94 [2020-10-13 15:39:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:00,710 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:39:00,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:39:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:39:00,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:00,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:00,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:39:00,712 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1423010721, now seen corresponding path program 1 times [2020-10-13 15:39:00,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:00,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572329356] [2020-10-13 15:39:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:39:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,803 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 15:39:05,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572329356] [2020-10-13 15:39:05,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:05,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:05,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552973270] [2020-10-13 15:39:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:05,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:05,805 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:39:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:06,549 INFO L93 Difference]: Finished difference Result 522 states and 790 transitions. [2020-10-13 15:39:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:06,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:39:06,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:06,552 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:39:06,552 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:39:06,553 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 15:39:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:39:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:39:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:39:06,561 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 94 [2020-10-13 15:39:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:06,561 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:39:06,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:39:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:39:06,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:06,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:06,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:39:06,563 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 604679272, now seen corresponding path program 1 times [2020-10-13 15:39:06,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:06,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743709072] [2020-10-13 15:39:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:39:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-13 15:39:07,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,454 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 15:39:07,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743709072] [2020-10-13 15:39:07,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:07,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:07,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537435752] [2020-10-13 15:39:07,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:07,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:07,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:07,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:07,455 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:39:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:08,128 INFO L93 Difference]: Finished difference Result 520 states and 786 transitions. [2020-10-13 15:39:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:08,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:39:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:08,131 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:39:08,131 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:39:08,132 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 15:39:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:39:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:39:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:39:08,140 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 94 [2020-10-13 15:39:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:08,140 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:39:08,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:39:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:39:08,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:08,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:08,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:39:08,142 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1038852183, now seen corresponding path program 1 times [2020-10-13 15:39:08,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:08,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939146569] [2020-10-13 15:39:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:39:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,782 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 15:39:08,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939146569] [2020-10-13 15:39:08,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:08,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:08,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340936760] [2020-10-13 15:39:08,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:08,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:08,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:08,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:08,783 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:39:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:09,462 INFO L93 Difference]: Finished difference Result 519 states and 783 transitions. [2020-10-13 15:39:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:09,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:39:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:09,465 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:39:09,465 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:39:09,466 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 15:39:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:39:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:39:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:39:09,473 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 94 [2020-10-13 15:39:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:09,474 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:39:09,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:39:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:39:09,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:09,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:09,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:39:09,475 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash -801757044, now seen corresponding path program 1 times [2020-10-13 15:39:09,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:09,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594213618] [2020-10-13 15:39:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:39:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:39:14,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:14,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,562 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 15:39:14,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594213618] [2020-10-13 15:39:14,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:14,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:14,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619877525] [2020-10-13 15:39:14,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:14,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:14,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:14,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:14,563 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:39:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:15,333 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2020-10-13 15:39:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:15,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:39:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:15,336 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:39:15,336 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:39:15,337 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 15:39:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:39:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:39:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:39:15,345 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 95 [2020-10-13 15:39:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:15,345 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:39:15,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:39:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:39:15,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:15,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:15,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:39:15,347 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:15,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1137405002, now seen corresponding path program 1 times [2020-10-13 15:39:15,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:15,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513057870] [2020-10-13 15:39:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:39:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:39:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,435 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 15:39:20,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513057870] [2020-10-13 15:39:20,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:20,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:20,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942797390] [2020-10-13 15:39:20,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:20,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:20,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:20,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:20,438 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:39:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:21,119 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2020-10-13 15:39:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:21,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:39:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:21,121 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:39:21,122 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:39:21,122 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 15:39:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:39:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:39:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:39:21,129 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 95 [2020-10-13 15:39:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:21,129 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:39:21,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:39:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:39:21,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:21,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:21,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:39:21,131 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -766626719, now seen corresponding path program 1 times [2020-10-13 15:39:21,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:21,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871028905] [2020-10-13 15:39:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:26,208 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 15:39:26,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871028905] [2020-10-13 15:39:26,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:26,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:26,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778249481] [2020-10-13 15:39:26,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:26,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:26,209 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:39:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:26,951 INFO L93 Difference]: Finished difference Result 544 states and 811 transitions. [2020-10-13 15:39:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:26,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:39:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:26,954 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:39:26,954 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:39:26,955 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 15:39:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:39:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:39:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:39:26,962 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 96 [2020-10-13 15:39:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:26,962 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:39:26,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:39:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:39:26,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:26,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:26,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:39:26,964 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -782145437, now seen corresponding path program 1 times [2020-10-13 15:39:26,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:26,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669257117] [2020-10-13 15:39:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,058 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 15:39:32,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669257117] [2020-10-13 15:39:32,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:32,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:32,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036382257] [2020-10-13 15:39:32,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:32,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:32,060 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:39:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:32,730 INFO L93 Difference]: Finished difference Result 519 states and 775 transitions. [2020-10-13 15:39:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:32,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:39:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:32,733 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:39:32,733 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:39:32,734 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 15:39:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:39:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:39:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:39:32,742 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 96 [2020-10-13 15:39:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:32,742 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:39:32,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:39:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:39:32,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:32,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:32,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:39:32,744 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -959621241, now seen corresponding path program 1 times [2020-10-13 15:39:32,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:32,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110107990] [2020-10-13 15:39:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:37,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:37,837 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 15:39:37,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110107990] [2020-10-13 15:39:37,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:37,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:37,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564594778] [2020-10-13 15:39:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:37,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:37,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:37,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:37,839 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:39:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:38,566 INFO L93 Difference]: Finished difference Result 544 states and 807 transitions. [2020-10-13 15:39:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:38,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:39:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:38,569 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:39:38,569 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:39:38,571 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 15:39:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:39:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:39:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:39:38,578 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 97 [2020-10-13 15:39:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:38,579 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:39:38,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:38,579 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:39:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:39:38,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:38,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:38,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:39:38,581 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1440701499, now seen corresponding path program 1 times [2020-10-13 15:39:38,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:38,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701252500] [2020-10-13 15:39:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:39:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:39:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:43,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:43,688 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 15:39:43,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701252500] [2020-10-13 15:39:43,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:43,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:43,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233156050] [2020-10-13 15:39:43,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:43,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:43,690 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:39:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:44,382 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-13 15:39:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:44,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:39:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:44,385 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:39:44,385 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:39:44,386 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 15:39:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:39:44,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:39:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:39:44,392 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 97 [2020-10-13 15:39:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:44,392 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:39:44,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:39:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:39:44,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:44,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:44,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:39:44,394 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 365448572, now seen corresponding path program 1 times [2020-10-13 15:39:44,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:44,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010651283] [2020-10-13 15:39:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:39:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:49,497 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 15:39:49,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010651283] [2020-10-13 15:39:49,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:49,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:49,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545260355] [2020-10-13 15:39:49,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:49,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:49,498 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:39:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:50,187 INFO L93 Difference]: Finished difference Result 534 states and 791 transitions. [2020-10-13 15:39:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:50,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:39:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:50,190 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:39:50,190 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:39:50,191 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 15:39:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:39:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:39:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2020-10-13 15:39:50,197 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 98 [2020-10-13 15:39:50,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:50,198 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2020-10-13 15:39:50,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2020-10-13 15:39:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:39:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:50,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:50,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:39:50,199 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1663137538, now seen corresponding path program 1 times [2020-10-13 15:39:50,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:50,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962153694] [2020-10-13 15:39:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:39:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:55,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:55,283 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 15:39:55,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962153694] [2020-10-13 15:39:55,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:55,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:55,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697387613] [2020-10-13 15:39:55,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:55,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:55,284 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand 5 states. [2020-10-13 15:39:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:55,936 INFO L93 Difference]: Finished difference Result 509 states and 755 transitions. [2020-10-13 15:39:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:55,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:39:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:55,939 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:39:55,940 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:39:55,940 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 15:39:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:39:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:39:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 382 transitions. [2020-10-13 15:39:55,947 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 382 transitions. Word has length 98 [2020-10-13 15:39:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 382 transitions. [2020-10-13 15:39:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 382 transitions. [2020-10-13 15:39:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:55,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:55,949 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:55,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:39:55,949 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1270854244, now seen corresponding path program 1 times [2020-10-13 15:39:55,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:55,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706743136] [2020-10-13 15:39:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:39:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:57,077 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 15:39:57,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706743136] [2020-10-13 15:39:57,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:57,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609748414] [2020-10-13 15:39:57,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:57,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:57,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:57,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:57,079 INFO L87 Difference]: Start difference. First operand 261 states and 382 transitions. Second operand 5 states. [2020-10-13 15:39:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:57,819 INFO L93 Difference]: Finished difference Result 534 states and 787 transitions. [2020-10-13 15:39:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:57,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:57,822 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:39:57,822 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:39:57,823 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 15:39:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:39:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:39:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:39:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2020-10-13 15:39:57,830 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 102 [2020-10-13 15:39:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:57,830 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2020-10-13 15:39:57,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2020-10-13 15:39:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:57,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:57,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:57,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:39:57,832 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:57,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1637327642, now seen corresponding path program 1 times [2020-10-13 15:39:57,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:57,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358341080] [2020-10-13 15:39:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:39:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:58,245 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 15:39:58,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358341080] [2020-10-13 15:39:58,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:58,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:58,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655075763] [2020-10-13 15:39:58,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:58,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:58,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:58,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:58,246 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand 5 states. [2020-10-13 15:39:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:58,948 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2020-10-13 15:39:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:58,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:58,951 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:39:58,951 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:39:58,952 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 15:39:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:39:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 287. [2020-10-13 15:39:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:39:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:39:58,957 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 102 [2020-10-13 15:39:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:58,958 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:39:58,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:39:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:39:58,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:58,959 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:58,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:39:58,960 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:58,960 INFO L82 PathProgramCache]: Analyzing trace with hash -311059026, now seen corresponding path program 1 times [2020-10-13 15:39:58,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:58,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365526966] [2020-10-13 15:39:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:39:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:59,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:59,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:59,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365526966] [2020-10-13 15:39:59,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:59,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:59,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978498369] [2020-10-13 15:39:59,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:59,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:59,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:59,758 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:40:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:00,709 INFO L93 Difference]: Finished difference Result 663 states and 1000 transitions. [2020-10-13 15:40:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:00,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:40:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:00,713 INFO L225 Difference]: With dead ends: 663 [2020-10-13 15:40:00,713 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 15:40:00,714 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 15:40:00,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 15:40:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 315. [2020-10-13 15:40:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:40:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 477 transitions. [2020-10-13 15:40:00,721 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 477 transitions. Word has length 107 [2020-10-13 15:40:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:00,721 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 477 transitions. [2020-10-13 15:40:00,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 477 transitions. [2020-10-13 15:40:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:40:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:00,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:00,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:40:00,723 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1875257273, now seen corresponding path program 1 times [2020-10-13 15:40:00,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:00,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491179859] [2020-10-13 15:40:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:40:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-13 15:40:03,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:40:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:03,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:03,097 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 15:40:03,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491179859] [2020-10-13 15:40:03,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:03,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:03,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499760637] [2020-10-13 15:40:03,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:03,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:03,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:03,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:03,099 INFO L87 Difference]: Start difference. First operand 315 states and 477 transitions. Second operand 5 states. [2020-10-13 15:40:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:03,849 INFO L93 Difference]: Finished difference Result 642 states and 977 transitions. [2020-10-13 15:40:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:03,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:40:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:03,851 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:40:03,851 INFO L226 Difference]: Without dead ends: 352 [2020-10-13 15:40:03,851 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 15:40:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-13 15:40:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2020-10-13 15:40:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:40:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 476 transitions. [2020-10-13 15:40:03,859 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 476 transitions. Word has length 108 [2020-10-13 15:40:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:03,860 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 476 transitions. [2020-10-13 15:40:03,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 476 transitions. [2020-10-13 15:40:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:40:03,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:03,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:03,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:40:03,861 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:03,862 INFO L82 PathProgramCache]: Analyzing trace with hash -471711651, now seen corresponding path program 1 times [2020-10-13 15:40:03,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:03,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742866772] [2020-10-13 15:40:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:04,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:40:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:04,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:04,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:04,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:04,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:04,635 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 15:40:04,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742866772] [2020-10-13 15:40:04,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:04,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:04,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988046891] [2020-10-13 15:40:04,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:04,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:04,637 INFO L87 Difference]: Start difference. First operand 315 states and 476 transitions. Second operand 5 states. [2020-10-13 15:40:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:05,527 INFO L93 Difference]: Finished difference Result 683 states and 1034 transitions. [2020-10-13 15:40:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:05,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:40:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:05,530 INFO L225 Difference]: With dead ends: 683 [2020-10-13 15:40:05,530 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:40:05,530 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 15:40:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:40:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 316. [2020-10-13 15:40:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:40:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 477 transitions. [2020-10-13 15:40:05,537 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 477 transitions. Word has length 108 [2020-10-13 15:40:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:05,538 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 477 transitions. [2020-10-13 15:40:05,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 477 transitions. [2020-10-13 15:40:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:40:05,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:05,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:05,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:40:05,539 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:05,540 INFO L82 PathProgramCache]: Analyzing trace with hash -717245852, now seen corresponding path program 1 times [2020-10-13 15:40:05,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:05,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710638071] [2020-10-13 15:40:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:07,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2215 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:40:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:40:07,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710638071] [2020-10-13 15:40:07,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:07,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:07,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180005852] [2020-10-13 15:40:07,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:07,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:07,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:07,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:07,845 INFO L87 Difference]: Start difference. First operand 316 states and 477 transitions. Second operand 5 states. [2020-10-13 15:40:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:08,567 INFO L93 Difference]: Finished difference Result 642 states and 974 transitions. [2020-10-13 15:40:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:08,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:40:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:08,569 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:40:08,569 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 15:40:08,570 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 15:40:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 15:40:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 316. [2020-10-13 15:40:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:40:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 476 transitions. [2020-10-13 15:40:08,576 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 476 transitions. Word has length 109 [2020-10-13 15:40:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:08,576 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 476 transitions. [2020-10-13 15:40:08,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 476 transitions. [2020-10-13 15:40:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:40:08,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:08,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:08,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:40:08,578 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash 928761676, now seen corresponding path program 1 times [2020-10-13 15:40:08,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:08,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737310436] [2020-10-13 15:40:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:40:08,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:40:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 15:40:08,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:40:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:09,006 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 15:40:09,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737310436] [2020-10-13 15:40:09,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:09,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:09,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591984084] [2020-10-13 15:40:09,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:09,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:09,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:09,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:09,007 INFO L87 Difference]: Start difference. First operand 316 states and 476 transitions. Second operand 5 states. [2020-10-13 15:40:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:09,725 INFO L93 Difference]: Finished difference Result 639 states and 968 transitions. [2020-10-13 15:40:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:09,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:40:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:09,728 INFO L225 Difference]: With dead ends: 639 [2020-10-13 15:40:09,729 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 15:40:09,729 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 15:40:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 15:40:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 316. [2020-10-13 15:40:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:40:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 475 transitions. [2020-10-13 15:40:09,736 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 475 transitions. Word has length 109 [2020-10-13 15:40:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:09,736 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 475 transitions. [2020-10-13 15:40:09,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 475 transitions. [2020-10-13 15:40:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:40:09,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:09,738 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 15:40:09,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:40:09,738 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -531902083, now seen corresponding path program 1 times [2020-10-13 15:40:09,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:09,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028949043] [2020-10-13 15:40:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:40:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-13 15:40:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:40:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:40:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:10,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:11,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028949043] [2020-10-13 15:40:11,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:11,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:11,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393901737] [2020-10-13 15:40:11,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:11,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:11,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:11,010 INFO L87 Difference]: Start difference. First operand 316 states and 475 transitions. Second operand 5 states. [2020-10-13 15:40:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:11,696 INFO L93 Difference]: Finished difference Result 654 states and 991 transitions. [2020-10-13 15:40:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:11,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:40:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:11,700 INFO L225 Difference]: With dead ends: 654 [2020-10-13 15:40:11,700 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:40:11,700 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 15:40:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:40:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:40:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:40:11,706 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 111 [2020-10-13 15:40:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:11,706 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:40:11,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:40:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:40:11,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:11,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:11,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:40:11,708 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:11,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2034175431, now seen corresponding path program 1 times [2020-10-13 15:40:11,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:11,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129910257] [2020-10-13 15:40:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:40:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:40:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:12,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129910257] [2020-10-13 15:40:12,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:12,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:12,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681137722] [2020-10-13 15:40:12,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:12,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:12,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:12,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:12,440 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:40:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:13,432 INFO L93 Difference]: Finished difference Result 763 states and 1168 transitions. [2020-10-13 15:40:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:13,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:40:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:13,435 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:40:13,435 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:40:13,436 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 15:40:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:40:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:40:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:40:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:40:13,443 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:40:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:13,443 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:40:13,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:40:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:40:13,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:13,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:13,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:40:13,444 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2043726425, now seen corresponding path program 1 times [2020-10-13 15:40:13,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:13,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350936097] [2020-10-13 15:40:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:13,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:40:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-13 15:40:14,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:40:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:40:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:14,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350936097] [2020-10-13 15:40:14,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:14,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:14,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519862202] [2020-10-13 15:40:14,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:14,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:14,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:14,145 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:40:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:15,126 INFO L93 Difference]: Finished difference Result 819 states and 1268 transitions. [2020-10-13 15:40:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:15,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:40:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:15,128 INFO L225 Difference]: With dead ends: 819 [2020-10-13 15:40:15,128 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 15:40:15,129 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 15:40:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 15:40:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 365. [2020-10-13 15:40:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:40:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:40:15,139 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:40:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:15,139 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:40:15,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:40:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:40:15,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:15,140 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 15:40:15,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:40:15,141 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:15,141 INFO L82 PathProgramCache]: Analyzing trace with hash 602329836, now seen corresponding path program 1 times [2020-10-13 15:40:15,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:15,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54172014] [2020-10-13 15:40:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:40:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:16,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:16,106 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 15:40:16,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54172014] [2020-10-13 15:40:16,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:16,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:16,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859735095] [2020-10-13 15:40:16,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:16,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:16,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:16,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:16,108 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:40:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:16,842 INFO L93 Difference]: Finished difference Result 737 states and 1138 transitions. [2020-10-13 15:40:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:16,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:40:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:16,845 INFO L225 Difference]: With dead ends: 737 [2020-10-13 15:40:16,846 INFO L226 Difference]: Without dead ends: 397 [2020-10-13 15:40:16,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-13 15:40:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 365. [2020-10-13 15:40:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:40:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:40:16,854 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:40:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:16,854 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:40:16,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:40:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:40:16,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:16,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:16,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:40:16,856 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:16,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1946254642, now seen corresponding path program 1 times [2020-10-13 15:40:16,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:16,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826763251] [2020-10-13 15:40:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:16,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:40:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:40:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:17,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:17,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:17,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:17,589 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 15:40:17,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826763251] [2020-10-13 15:40:17,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:17,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:17,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601391631] [2020-10-13 15:40:17,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:17,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:17,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:17,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:17,591 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:40:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:18,540 INFO L93 Difference]: Finished difference Result 811 states and 1252 transitions. [2020-10-13 15:40:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:18,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:40:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:18,544 INFO L225 Difference]: With dead ends: 811 [2020-10-13 15:40:18,544 INFO L226 Difference]: Without dead ends: 471 [2020-10-13 15:40:18,545 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 15:40:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-13 15:40:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 365. [2020-10-13 15:40:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:40:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:40:18,551 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:40:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:18,551 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:40:18,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:18,551 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:40:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:40:18,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:18,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:18,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:40:18,552 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:18,553 INFO L82 PathProgramCache]: Analyzing trace with hash -487806702, now seen corresponding path program 1 times [2020-10-13 15:40:18,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:18,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360257597] [2020-10-13 15:40:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:40:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:40:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:19,356 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 15:40:19,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360257597] [2020-10-13 15:40:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:19,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33405165] [2020-10-13 15:40:19,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:19,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:19,357 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:40:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:20,322 INFO L93 Difference]: Finished difference Result 783 states and 1202 transitions. [2020-10-13 15:40:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:20,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:40:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:20,325 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:40:20,325 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:40:20,326 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 15:40:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:40:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:40:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:40:20,331 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 113 [2020-10-13 15:40:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:20,332 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:40:20,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:40:20,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:40:20,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:20,333 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 15:40:20,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:40:20,333 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash -191366687, now seen corresponding path program 1 times [2020-10-13 15:40:20,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:20,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322136739] [2020-10-13 15:40:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:40:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:21,317 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 15:40:21,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322136739] [2020-10-13 15:40:21,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:21,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:21,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182417875] [2020-10-13 15:40:21,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:21,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:21,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:21,319 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:40:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:22,016 INFO L93 Difference]: Finished difference Result 679 states and 1034 transitions. [2020-10-13 15:40:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:22,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:40:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:22,018 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:40:22,019 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:40:22,020 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 15:40:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:40:22,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:40:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:40:22,025 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 114 [2020-10-13 15:40:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:22,025 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:40:22,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:40:22,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:40:22,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:22,026 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:22,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:40:22,026 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash -593268636, now seen corresponding path program 1 times [2020-10-13 15:40:22,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:22,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510604699] [2020-10-13 15:40:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:40:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-13 15:40:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:40:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:40:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:22,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:22,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:22,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:40:22,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510604699] [2020-10-13 15:40:22,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:22,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:22,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055861004] [2020-10-13 15:40:22,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:22,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:22,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:22,811 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:40:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:23,742 INFO L93 Difference]: Finished difference Result 763 states and 1164 transitions. [2020-10-13 15:40:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:23,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:40:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:23,745 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:40:23,745 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:40:23,746 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 15:40:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:40:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:40:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:40:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 559 transitions. [2020-10-13 15:40:23,753 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 559 transitions. Word has length 115 [2020-10-13 15:40:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:23,753 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 559 transitions. [2020-10-13 15:40:23,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 559 transitions. [2020-10-13 15:40:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:40:23,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:23,754 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] [2020-10-13 15:40:23,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:40:23,754 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash -630274969, now seen corresponding path program 1 times [2020-10-13 15:40:23,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:23,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56578763] [2020-10-13 15:40:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:23,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:24,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:40:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:24,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:24,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:24,548 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 15:40:24,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56578763] [2020-10-13 15:40:24,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:24,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:24,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255454284] [2020-10-13 15:40:24,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:24,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:24,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:24,550 INFO L87 Difference]: Start difference. First operand 365 states and 559 transitions. Second operand 5 states. [2020-10-13 15:40:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:25,496 INFO L93 Difference]: Finished difference Result 783 states and 1200 transitions. [2020-10-13 15:40:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:25,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:40:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:25,503 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:40:25,503 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:40:25,504 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 15:40:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:40:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:40:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:40:25,510 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 116 [2020-10-13 15:40:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:25,511 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:40:25,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:40:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:40:25,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:25,512 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:25,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:40:25,512 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash 461965059, now seen corresponding path program 1 times [2020-10-13 15:40:25,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:25,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993851015] [2020-10-13 15:40:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:40:30,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:40:30,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:40:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:30,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:30,600 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 15:40:30,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993851015] [2020-10-13 15:40:30,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:30,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:30,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556715138] [2020-10-13 15:40:30,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:30,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:30,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:30,601 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:40:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:31,285 INFO L93 Difference]: Finished difference Result 676 states and 1025 transitions. [2020-10-13 15:40:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:31,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:40:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:31,288 INFO L225 Difference]: With dead ends: 676 [2020-10-13 15:40:31,288 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:40:31,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:40:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 337. [2020-10-13 15:40:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 508 transitions. [2020-10-13 15:40:31,296 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 508 transitions. Word has length 116 [2020-10-13 15:40:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:31,297 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 508 transitions. [2020-10-13 15:40:31,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 508 transitions. [2020-10-13 15:40:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:40:31,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:31,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:31,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:40:31,298 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash 846123597, now seen corresponding path program 1 times [2020-10-13 15:40:31,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:31,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253278143] [2020-10-13 15:40:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:40:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:31,942 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 15:40:31,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253278143] [2020-10-13 15:40:31,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:31,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:31,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223399625] [2020-10-13 15:40:31,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:31,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:31,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:31,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:31,944 INFO L87 Difference]: Start difference. First operand 337 states and 508 transitions. Second operand 5 states. [2020-10-13 15:40:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:32,637 INFO L93 Difference]: Finished difference Result 675 states and 1022 transitions. [2020-10-13 15:40:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:32,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:40:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:32,640 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:40:32,641 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:40:32,641 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 15:40:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:40:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:40:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 507 transitions. [2020-10-13 15:40:32,648 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 507 transitions. Word has length 116 [2020-10-13 15:40:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:32,649 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 507 transitions. [2020-10-13 15:40:32,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 507 transitions. [2020-10-13 15:40:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:40:32,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:32,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:32,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:40:32,650 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash -557887962, now seen corresponding path program 1 times [2020-10-13 15:40:32,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:32,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323860784] [2020-10-13 15:40:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:40:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:40:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:40:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:37,733 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 15:40:37,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323860784] [2020-10-13 15:40:37,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:37,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:37,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872792889] [2020-10-13 15:40:37,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:37,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:37,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:37,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:37,734 INFO L87 Difference]: Start difference. First operand 337 states and 507 transitions. Second operand 5 states. [2020-10-13 15:40:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:38,413 INFO L93 Difference]: Finished difference Result 675 states and 1020 transitions. [2020-10-13 15:40:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:38,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:40:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:38,416 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:40:38,416 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:40:38,417 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 15:40:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:40:38,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:40:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-10-13 15:40:38,422 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 117 [2020-10-13 15:40:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:38,422 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-10-13 15:40:38,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-10-13 15:40:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:40:38,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:38,423 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 15:40:38,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:40:38,424 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:38,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1654303945, now seen corresponding path program 1 times [2020-10-13 15:40:38,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:38,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816647348] [2020-10-13 15:40:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:40:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:39,399 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 15:40:39,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816647348] [2020-10-13 15:40:39,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:39,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:39,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240841197] [2020-10-13 15:40:39,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:39,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:39,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:39,401 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 5 states. [2020-10-13 15:40:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:40,143 INFO L93 Difference]: Finished difference Result 679 states and 1026 transitions. [2020-10-13 15:40:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:40,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:40:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:40,146 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:40:40,146 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:40:40,147 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 15:40:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:40:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:40:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 505 transitions. [2020-10-13 15:40:40,152 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 505 transitions. Word has length 118 [2020-10-13 15:40:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:40,153 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 505 transitions. [2020-10-13 15:40:40,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 505 transitions. [2020-10-13 15:40:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:40:40,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:40,154 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 15:40:40,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:40:40,154 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:40,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1476750505, now seen corresponding path program 1 times [2020-10-13 15:40:40,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:40,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144751144] [2020-10-13 15:40:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:40:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:41,154 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 15:40:41,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144751144] [2020-10-13 15:40:41,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:41,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:41,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617813725] [2020-10-13 15:40:41,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:41,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:41,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:41,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:41,155 INFO L87 Difference]: Start difference. First operand 337 states and 505 transitions. Second operand 5 states. [2020-10-13 15:40:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:41,935 INFO L93 Difference]: Finished difference Result 679 states and 1024 transitions. [2020-10-13 15:40:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:41,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:40:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:41,938 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:40:41,938 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:40:41,939 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 15:40:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:40:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:40:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 504 transitions. [2020-10-13 15:40:41,945 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 504 transitions. Word has length 118 [2020-10-13 15:40:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:41,945 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 504 transitions. [2020-10-13 15:40:41,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 504 transitions. [2020-10-13 15:40:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:40:41,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:41,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:41,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:40:41,947 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1796619769, now seen corresponding path program 1 times [2020-10-13 15:40:41,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:41,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849638495] [2020-10-13 15:40:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:40:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:47,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:47,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:47,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:47,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:47,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:47,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:47,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:47,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:47,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:47,044 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 15:40:47,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849638495] [2020-10-13 15:40:47,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:47,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:47,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678997004] [2020-10-13 15:40:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:47,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:47,046 INFO L87 Difference]: Start difference. First operand 337 states and 504 transitions. Second operand 5 states. [2020-10-13 15:40:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:47,788 INFO L93 Difference]: Finished difference Result 675 states and 1014 transitions. [2020-10-13 15:40:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:47,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:40:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:47,792 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:40:47,792 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:40:47,794 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 15:40:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:40:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:40:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2020-10-13 15:40:47,800 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 118 [2020-10-13 15:40:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:47,801 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2020-10-13 15:40:47,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2020-10-13 15:40:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:40:47,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:47,802 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 15:40:47,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:40:47,802 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash -122008803, now seen corresponding path program 1 times [2020-10-13 15:40:47,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:47,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757818254] [2020-10-13 15:40:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:47,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:40:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:40:48,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757818254] [2020-10-13 15:40:48,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:48,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:48,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793070502] [2020-10-13 15:40:48,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:48,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:48,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:48,834 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 5 states. [2020-10-13 15:40:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:49,596 INFO L93 Difference]: Finished difference Result 677 states and 1018 transitions. [2020-10-13 15:40:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:49,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:40:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:49,598 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:40:49,598 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:40:49,599 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 15:40:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:40:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:40:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 502 transitions. [2020-10-13 15:40:49,607 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 502 transitions. Word has length 119 [2020-10-13 15:40:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:49,607 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 502 transitions. [2020-10-13 15:40:49,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 502 transitions. [2020-10-13 15:40:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:40:49,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:49,609 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 15:40:49,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:40:49,609 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:49,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2070839197, now seen corresponding path program 1 times [2020-10-13 15:40:49,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:49,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501350481] [2020-10-13 15:40:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:40:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-13 15:40:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:40:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:50,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:50,819 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 15:40:50,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501350481] [2020-10-13 15:40:50,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:50,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:50,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833261979] [2020-10-13 15:40:50,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:50,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:50,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:50,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:50,821 INFO L87 Difference]: Start difference. First operand 337 states and 502 transitions. Second operand 5 states. [2020-10-13 15:40:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:51,608 INFO L93 Difference]: Finished difference Result 673 states and 1011 transitions. [2020-10-13 15:40:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:51,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:40:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:51,611 INFO L225 Difference]: With dead ends: 673 [2020-10-13 15:40:51,611 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:40:51,612 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 15:40:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:40:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 337. [2020-10-13 15:40:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 501 transitions. [2020-10-13 15:40:51,618 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 501 transitions. Word has length 119 [2020-10-13 15:40:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:51,618 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 501 transitions. [2020-10-13 15:40:51,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 501 transitions. [2020-10-13 15:40:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:40:51,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:51,619 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] [2020-10-13 15:40:51,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:40:51,619 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1470332577, now seen corresponding path program 1 times [2020-10-13 15:40:51,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:51,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29833336] [2020-10-13 15:40:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:40:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:56,720 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 15:40:56,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29833336] [2020-10-13 15:40:56,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:56,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:56,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906514533] [2020-10-13 15:40:56,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:56,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:56,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:56,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:56,721 INFO L87 Difference]: Start difference. First operand 337 states and 501 transitions. Second operand 5 states. [2020-10-13 15:40:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:57,406 INFO L93 Difference]: Finished difference Result 675 states and 1008 transitions. [2020-10-13 15:40:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:57,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:40:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:57,410 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:40:57,410 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:40:57,411 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 15:40:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:40:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:40:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:40:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 500 transitions. [2020-10-13 15:40:57,416 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 500 transitions. Word has length 119 [2020-10-13 15:40:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:57,416 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 500 transitions. [2020-10-13 15:40:57,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 500 transitions. [2020-10-13 15:40:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:40:57,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:57,417 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] [2020-10-13 15:40:57,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:40:57,417 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:57,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1615394398, now seen corresponding path program 1 times [2020-10-13 15:40:57,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:57,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994638048] [2020-10-13 15:40:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:41:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:02,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:02,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:02,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:02,524 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 15:41:02,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994638048] [2020-10-13 15:41:02,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:02,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:02,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535756600] [2020-10-13 15:41:02,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:02,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:02,526 INFO L87 Difference]: Start difference. First operand 337 states and 500 transitions. Second operand 5 states. [2020-10-13 15:41:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:03,249 INFO L93 Difference]: Finished difference Result 665 states and 994 transitions. [2020-10-13 15:41:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:03,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:41:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:03,251 INFO L225 Difference]: With dead ends: 665 [2020-10-13 15:41:03,251 INFO L226 Difference]: Without dead ends: 353 [2020-10-13 15:41:03,252 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 15:41:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-13 15:41:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 337. [2020-10-13 15:41:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:41:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 499 transitions. [2020-10-13 15:41:03,257 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 499 transitions. Word has length 120 [2020-10-13 15:41:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:03,257 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 499 transitions. [2020-10-13 15:41:03,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 499 transitions. [2020-10-13 15:41:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:41:03,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:03,258 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, 1] [2020-10-13 15:41:03,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 15:41:03,258 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:03,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1247984350, now seen corresponding path program 1 times [2020-10-13 15:41:03,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:03,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706121827] [2020-10-13 15:41:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:41:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:03,710 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 15:41:03,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706121827] [2020-10-13 15:41:03,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:03,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:03,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737350067] [2020-10-13 15:41:03,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:03,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:03,712 INFO L87 Difference]: Start difference. First operand 337 states and 499 transitions. Second operand 5 states.