/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:04:02,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:04:02,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:04:02,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:04:02,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:04:02,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:04:02,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:04:02,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:04:02,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:04:02,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:04:02,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:04:02,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:04:02,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:04:02,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:04:02,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:04:02,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:04:02,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:04:02,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:04:02,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:04:02,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:04:02,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:04:02,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:04:02,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:04:02,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:04:02,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:04:02,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:04:02,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:04:02,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:04:02,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:04:02,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:04:02,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:04:02,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:04:02,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:04:02,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:04:02,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:04:02,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:04:02,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:04:02,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:04:02,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:04:02,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:04:02,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:04:02,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:04:02,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:04:02,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:04:02,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:04:02,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:04:02,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:04:02,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:04:02,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:04:02,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:04:02,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:04:02,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:04:02,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:04:02,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:04:02,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:04:02,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:04:02,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:04:02,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:04:02,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:04:02,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:04:02,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:04:02,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:04:02,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:04:02,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:04:02,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:04:02,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:04:02,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:04:03,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:04:03,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:04:03,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:04:03,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:04:03,088 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:04:03,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-14 10:04:03,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84dbf6387/c6eb80eb32de43398831a5b5e2dee2f4/FLAG59d069d90 [2020-10-14 10:04:03,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:04:03,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-14 10:04:03,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84dbf6387/c6eb80eb32de43398831a5b5e2dee2f4/FLAG59d069d90 [2020-10-14 10:04:03,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84dbf6387/c6eb80eb32de43398831a5b5e2dee2f4 [2020-10-14 10:04:03,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:04:03,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:04:03,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:03,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:04:03,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:04:03,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:03" (1/1) ... [2020-10-14 10:04:03,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5dd7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:03, skipping insertion in model container [2020-10-14 10:04:03,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:03" (1/1) ... [2020-10-14 10:04:04,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:04:04,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:04:04,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:04,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:04:04,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:04,872 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:04:04,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04 WrapperNode [2020-10-14 10:04:04,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:04,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:04:04,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:04:04,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:04:04,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:04,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:04,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:04,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:04,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:05,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:05,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... [2020-10-14 10:04:05,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:04:05,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:04:05,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:04:05,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:04:05,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:04:05,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:04:05,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:04:05,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:04:05,116 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:04:05,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:04:05,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:04:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:04:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:04:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:04:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:04:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:04:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:04:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:04:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:04:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:04:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:04:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:04:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:04:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:04:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:04:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:04:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:04:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:04:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:04:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:04:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:04:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:04:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:04:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:04:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:04:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:04:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:04:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:04:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:04:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:04:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:04:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:04:05,624 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:04:06,291 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:04:06,291 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:04:06,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:04:06,315 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:04:06,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:06 BoogieIcfgContainer [2020-10-14 10:04:06,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:04:06,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:04:06,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:04:06,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:04:06,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:03" (1/3) ... [2020-10-14 10:04:06,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e794aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:06, skipping insertion in model container [2020-10-14 10:04:06,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:04" (2/3) ... [2020-10-14 10:04:06,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e794aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:06, skipping insertion in model container [2020-10-14 10:04:06,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:06" (3/3) ... [2020-10-14 10:04:06,328 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2020-10-14 10:04:06,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:04:06,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:04:06,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:04:06,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:04:06,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:04:06,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:04:06,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:04:06,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:04:06,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:04:06,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:04:06,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:04:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:04:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:04:06,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:06,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:06,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:06,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:06,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-14 10:04:06,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:06,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032990524] [2020-10-14 10:04:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:08,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:08,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:04:08,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-14 10:04:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:04:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:08,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-10-14 10:04:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:08,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032990524] [2020-10-14 10:04:08,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:08,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:08,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334205712] [2020-10-14 10:04:08,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:08,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:08,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:08,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:08,284 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:04:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:08,988 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:04:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:08,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:04:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:09,006 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:04:09,007 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:04:09,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:04:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:04:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:04:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:04:09,085 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:04:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:09,086 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:04:09,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:04:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:04:09,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:09,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:09,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:04:09,095 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-14 10:04:09,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:09,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20326029] [2020-10-14 10:04:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:04:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-14 10:04:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:04:10,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:04:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:10,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:10,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20326029] [2020-10-14 10:04:10,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:10,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:10,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430024582] [2020-10-14 10:04:10,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:10,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:10,349 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:04:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:10,851 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:04:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:10,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:04:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:10,856 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:04:10,857 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:04:10,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:04:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:04:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:04:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:04:10,888 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:04:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:10,889 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:04:10,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:04:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:04:10,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:10,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:10,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:04:10,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:10,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-14 10:04:10,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:10,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827399722] [2020-10-14 10:04:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:04:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-14 10:04:11,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:11,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:04:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:04:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:11,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:11,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:04:11,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827399722] [2020-10-14 10:04:11,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:11,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:11,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834757558] [2020-10-14 10:04:11,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:11,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:11,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:11,642 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:04:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:12,169 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:04:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:12,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:04:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:12,174 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:04:12,174 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:04:12,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:04:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:04:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:04:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:04:12,199 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:04:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:12,200 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:04:12,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:04:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:04:12,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:12,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:12,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:04:12,205 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:12,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-14 10:04:12,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:12,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580790963] [2020-10-14 10:04:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:04:15,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2952 [2020-10-14 10:04:15,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:15,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:15,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580790963] [2020-10-14 10:04:15,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:15,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:15,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245901258] [2020-10-14 10:04:15,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:15,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:15,405 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:04:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:15,857 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:04:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:15,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:04:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:15,862 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:15,862 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:04:15,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:04:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:04:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:04:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:04:15,888 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:04:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:15,888 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:04:15,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:04:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:04:15,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:15,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:15,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:04:15,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:15,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2121222933, now seen corresponding path program 1 times [2020-10-14 10:04:15,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:15,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785294186] [2020-10-14 10:04:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 10:04:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3168 [2020-10-14 10:04:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:19,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:19,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:19,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785294186] [2020-10-14 10:04:19,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:19,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:19,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752759619] [2020-10-14 10:04:19,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:19,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:19,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:19,237 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:04:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:20,220 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:04:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:20,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 10:04:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:20,226 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:04:20,226 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:04:20,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:20,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:04:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:04:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:04:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:04:20,254 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 111 [2020-10-14 10:04:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:20,255 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:04:20,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:04:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 10:04:20,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:20,258 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:20,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:04:20,258 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:20,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2042459755, now seen corresponding path program 1 times [2020-10-14 10:04:20,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:20,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239854812] [2020-10-14 10:04:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 10:04:20,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 10:04:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:04:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:20,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:20,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239854812] [2020-10-14 10:04:20,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:20,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:20,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820303024] [2020-10-14 10:04:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:20,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:20,999 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:04:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:21,453 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:04:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:21,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 10:04:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:21,460 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:04:21,460 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:04:21,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:04:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:04:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:04:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:04:21,491 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 128 [2020-10-14 10:04:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:21,491 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:04:21,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:04:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:04:21,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:21,494 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:21,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:04:21,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-14 10:04:21,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:21,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547774065] [2020-10-14 10:04:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:22,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:22,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:04:22,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-14 10:04:22,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:22,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:04:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:22,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547774065] [2020-10-14 10:04:22,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:22,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:22,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861336448] [2020-10-14 10:04:22,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:22,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:22,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:22,522 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-14 10:04:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:23,035 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-14 10:04:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:23,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 10:04:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:23,043 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:23,044 INFO L226 Difference]: Without dead ends: 1018 [2020-10-14 10:04:23,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-14 10:04:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-14 10:04:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 10:04:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-14 10:04:23,087 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-14 10:04:23,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:23,088 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-14 10:04:23,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-14 10:04:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:04:23,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:23,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:23,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:04:23,093 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:23,093 INFO L82 PathProgramCache]: Analyzing trace with hash 64677423, now seen corresponding path program 1 times [2020-10-14 10:04:23,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:23,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777492309] [2020-10-14 10:04:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:04:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 10:04:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:28,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 10:04:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:04:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:28,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:28,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:28,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:28,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:28,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:28,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:04:28,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777492309] [2020-10-14 10:04:28,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:28,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:28,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814910012] [2020-10-14 10:04:28,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:28,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:28,357 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 4 states. [2020-10-14 10:04:28,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:28,865 INFO L93 Difference]: Finished difference Result 1393 states and 2093 transitions. [2020-10-14 10:04:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:28,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-14 10:04:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:28,872 INFO L225 Difference]: With dead ends: 1393 [2020-10-14 10:04:28,872 INFO L226 Difference]: Without dead ends: 1141 [2020-10-14 10:04:28,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:28,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-10-14 10:04:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2020-10-14 10:04:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-10-14 10:04:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1715 transitions. [2020-10-14 10:04:28,917 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1715 transitions. Word has length 171 [2020-10-14 10:04:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:28,917 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1715 transitions. [2020-10-14 10:04:28,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1715 transitions. [2020-10-14 10:04:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 10:04:28,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:28,922 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:28,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:04:28,922 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2010233282, now seen corresponding path program 1 times [2020-10-14 10:04:28,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:28,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544950636] [2020-10-14 10:04:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 10:04:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:04:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:33,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:34,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:34,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544950636] [2020-10-14 10:04:34,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:34,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:34,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115381658] [2020-10-14 10:04:34,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:34,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:34,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:34,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:34,139 INFO L87 Difference]: Start difference. First operand 1141 states and 1715 transitions. Second operand 5 states. [2020-10-14 10:04:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:35,487 INFO L93 Difference]: Finished difference Result 3197 states and 4832 transitions. [2020-10-14 10:04:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:35,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 10:04:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:35,503 INFO L225 Difference]: With dead ends: 3197 [2020-10-14 10:04:35,504 INFO L226 Difference]: Without dead ends: 2070 [2020-10-14 10:04:35,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2020-10-14 10:04:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1492. [2020-10-14 10:04:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-14 10:04:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2363 transitions. [2020-10-14 10:04:35,602 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2363 transitions. Word has length 174 [2020-10-14 10:04:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:35,603 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 2363 transitions. [2020-10-14 10:04:35,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2363 transitions. [2020-10-14 10:04:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 10:04:35,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:35,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:35,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:04:35,612 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash -977614860, now seen corresponding path program 1 times [2020-10-14 10:04:35,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:35,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557003462] [2020-10-14 10:04:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:40,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:40,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557003462] [2020-10-14 10:04:40,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:40,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:40,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936792678] [2020-10-14 10:04:40,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:40,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:40,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:40,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:40,840 INFO L87 Difference]: Start difference. First operand 1492 states and 2363 transitions. Second operand 5 states. [2020-10-14 10:04:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:41,919 INFO L93 Difference]: Finished difference Result 3492 states and 5402 transitions. [2020-10-14 10:04:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:41,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-14 10:04:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:41,931 INFO L225 Difference]: With dead ends: 3492 [2020-10-14 10:04:41,931 INFO L226 Difference]: Without dead ends: 2014 [2020-10-14 10:04:41,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-14 10:04:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1501. [2020-10-14 10:04:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-10-14 10:04:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2372 transitions. [2020-10-14 10:04:41,995 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2372 transitions. Word has length 175 [2020-10-14 10:04:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:41,995 INFO L479 AbstractCegarLoop]: Abstraction has 1501 states and 2372 transitions. [2020-10-14 10:04:41,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2372 transitions. [2020-10-14 10:04:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 10:04:42,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:42,001 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:42,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:04:42,001 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2101061769, now seen corresponding path program 1 times [2020-10-14 10:04:42,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:42,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522739777] [2020-10-14 10:04:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 10:04:47,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:04:47,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:47,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:04:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:47,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:47,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:47,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:47,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:04:47,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522739777] [2020-10-14 10:04:47,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:47,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:47,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237838362] [2020-10-14 10:04:47,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:47,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:47,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:47,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:47,185 INFO L87 Difference]: Start difference. First operand 1501 states and 2372 transitions. Second operand 5 states. [2020-10-14 10:04:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:48,335 INFO L93 Difference]: Finished difference Result 3917 states and 6146 transitions. [2020-10-14 10:04:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:48,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 10:04:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:48,353 INFO L225 Difference]: With dead ends: 3917 [2020-10-14 10:04:48,354 INFO L226 Difference]: Without dead ends: 2430 [2020-10-14 10:04:48,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:48,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-14 10:04:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1852. [2020-10-14 10:04:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1852 states. [2020-10-14 10:04:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 3020 transitions. [2020-10-14 10:04:48,472 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 3020 transitions. Word has length 187 [2020-10-14 10:04:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:48,473 INFO L479 AbstractCegarLoop]: Abstraction has 1852 states and 3020 transitions. [2020-10-14 10:04:48,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 3020 transitions. [2020-10-14 10:04:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:04:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:48,484 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:48,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:04:48,484 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1271837381, now seen corresponding path program 1 times [2020-10-14 10:04:48,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:48,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633514261] [2020-10-14 10:04:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:04:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:04:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 10:04:53,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 10:04:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:53,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:53,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:04:53,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633514261] [2020-10-14 10:04:53,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:53,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763673039] [2020-10-14 10:04:53,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:53,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:53,851 INFO L87 Difference]: Start difference. First operand 1852 states and 3020 transitions. Second operand 5 states. [2020-10-14 10:04:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:54,638 INFO L93 Difference]: Finished difference Result 5506 states and 8979 transitions. [2020-10-14 10:04:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:54,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:04:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:54,659 INFO L225 Difference]: With dead ends: 5506 [2020-10-14 10:04:54,659 INFO L226 Difference]: Without dead ends: 3668 [2020-10-14 10:04:54,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2020-10-14 10:04:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3666. [2020-10-14 10:04:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-14 10:04:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5939 transitions. [2020-10-14 10:04:54,807 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5939 transitions. Word has length 188 [2020-10-14 10:04:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:54,807 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 5939 transitions. [2020-10-14 10:04:54,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5939 transitions. [2020-10-14 10:04:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:04:54,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:54,816 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:54,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:04:54,817 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:54,817 INFO L82 PathProgramCache]: Analyzing trace with hash 432803719, now seen corresponding path program 1 times [2020-10-14 10:04:54,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:54,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914481070] [2020-10-14 10:04:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:04:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:04:59,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:59,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:04:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:59,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:05:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:00,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914481070] [2020-10-14 10:05:00,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:00,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:00,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911863129] [2020-10-14 10:05:00,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:00,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:00,065 INFO L87 Difference]: Start difference. First operand 3666 states and 5939 transitions. Second operand 5 states. [2020-10-14 10:05:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:01,593 INFO L93 Difference]: Finished difference Result 9160 states and 14655 transitions. [2020-10-14 10:05:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:01,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:05:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:01,623 INFO L225 Difference]: With dead ends: 9160 [2020-10-14 10:05:01,624 INFO L226 Difference]: Without dead ends: 5513 [2020-10-14 10:05:01,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2020-10-14 10:05:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 3666. [2020-10-14 10:05:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-14 10:05:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5939 transitions. [2020-10-14 10:05:01,790 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5939 transitions. Word has length 188 [2020-10-14 10:05:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:01,791 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 5939 transitions. [2020-10-14 10:05:01,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5939 transitions. [2020-10-14 10:05:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:05:01,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:01,800 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:01,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:05:01,800 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1838068237, now seen corresponding path program 1 times [2020-10-14 10:05:01,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:01,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743060631] [2020-10-14 10:05:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:06,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:05:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:06,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:06,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:05:06,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743060631] [2020-10-14 10:05:06,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:06,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:06,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068609512] [2020-10-14 10:05:06,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:06,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:06,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:06,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:06,978 INFO L87 Difference]: Start difference. First operand 3666 states and 5939 transitions. Second operand 5 states. [2020-10-14 10:05:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:08,091 INFO L93 Difference]: Finished difference Result 9050 states and 14500 transitions. [2020-10-14 10:05:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:08,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:05:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:08,137 INFO L225 Difference]: With dead ends: 9050 [2020-10-14 10:05:08,138 INFO L226 Difference]: Without dead ends: 5403 [2020-10-14 10:05:08,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2020-10-14 10:05:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 3666. [2020-10-14 10:05:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-14 10:05:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5939 transitions. [2020-10-14 10:05:08,284 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5939 transitions. Word has length 188 [2020-10-14 10:05:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:08,284 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 5939 transitions. [2020-10-14 10:05:08,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5939 transitions. [2020-10-14 10:05:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:05:08,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:08,299 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:08,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:05:08,299 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:08,300 INFO L82 PathProgramCache]: Analyzing trace with hash -555048261, now seen corresponding path program 1 times [2020-10-14 10:05:08,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:08,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167215547] [2020-10-14 10:05:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:13,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:13,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:05:13,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:05:13,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:13,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:13,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:05:13,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167215547] [2020-10-14 10:05:13,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:13,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:13,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840872865] [2020-10-14 10:05:13,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:13,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:13,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:13,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:13,430 INFO L87 Difference]: Start difference. First operand 3666 states and 5939 transitions. Second operand 5 states. [2020-10-14 10:05:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:14,577 INFO L93 Difference]: Finished difference Result 9178 states and 14673 transitions. [2020-10-14 10:05:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:14,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:05:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:14,591 INFO L225 Difference]: With dead ends: 9178 [2020-10-14 10:05:14,592 INFO L226 Difference]: Without dead ends: 5531 [2020-10-14 10:05:14,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-10-14 10:05:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 3684. [2020-10-14 10:05:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2020-10-14 10:05:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5957 transitions. [2020-10-14 10:05:14,737 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5957 transitions. Word has length 188 [2020-10-14 10:05:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:14,738 INFO L479 AbstractCegarLoop]: Abstraction has 3684 states and 5957 transitions. [2020-10-14 10:05:14,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5957 transitions. [2020-10-14 10:05:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:05:14,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:14,748 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:14,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:05:14,749 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1661676239, now seen corresponding path program 1 times [2020-10-14 10:05:14,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:14,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478605045] [2020-10-14 10:05:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:19,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 10:05:19,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:05:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:19,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:19,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:19,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:19,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:19,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:19,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478605045] [2020-10-14 10:05:19,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:19,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:19,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025417667] [2020-10-14 10:05:19,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:19,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:19,919 INFO L87 Difference]: Start difference. First operand 3684 states and 5957 transitions. Second operand 5 states. [2020-10-14 10:05:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:20,956 INFO L93 Difference]: Finished difference Result 9086 states and 14536 transitions. [2020-10-14 10:05:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:20,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 10:05:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:20,969 INFO L225 Difference]: With dead ends: 9086 [2020-10-14 10:05:20,970 INFO L226 Difference]: Without dead ends: 5421 [2020-10-14 10:05:20,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5421 states. [2020-10-14 10:05:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5421 to 3684. [2020-10-14 10:05:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2020-10-14 10:05:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5957 transitions. [2020-10-14 10:05:21,121 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5957 transitions. Word has length 189 [2020-10-14 10:05:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:21,122 INFO L479 AbstractCegarLoop]: Abstraction has 3684 states and 5957 transitions. [2020-10-14 10:05:21,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5957 transitions. [2020-10-14 10:05:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:05:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:21,137 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:21,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:05:21,138 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1922150232, now seen corresponding path program 1 times [2020-10-14 10:05:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362964519] [2020-10-14 10:05:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:05:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:26,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362964519] [2020-10-14 10:05:26,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:26,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:26,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058617108] [2020-10-14 10:05:26,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:26,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:26,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:26,308 INFO L87 Difference]: Start difference. First operand 3684 states and 5957 transitions. Second operand 5 states. [2020-10-14 10:05:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:27,198 INFO L93 Difference]: Finished difference Result 9466 states and 15097 transitions. [2020-10-14 10:05:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:27,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 10:05:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:27,214 INFO L225 Difference]: With dead ends: 9466 [2020-10-14 10:05:27,214 INFO L226 Difference]: Without dead ends: 5801 [2020-10-14 10:05:27,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-10-14 10:05:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 3684. [2020-10-14 10:05:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2020-10-14 10:05:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5957 transitions. [2020-10-14 10:05:27,351 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5957 transitions. Word has length 189 [2020-10-14 10:05:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:27,352 INFO L479 AbstractCegarLoop]: Abstraction has 3684 states and 5957 transitions. [2020-10-14 10:05:27,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5957 transitions. [2020-10-14 10:05:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:05:27,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:27,361 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:27,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:05:27,361 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:27,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1103035931, now seen corresponding path program 1 times [2020-10-14 10:05:27,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:27,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125688178] [2020-10-14 10:05:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:32,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:32,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:05:32,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125688178] [2020-10-14 10:05:32,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:32,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:32,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190413424] [2020-10-14 10:05:32,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:32,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:32,495 INFO L87 Difference]: Start difference. First operand 3684 states and 5957 transitions. Second operand 5 states. [2020-10-14 10:05:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:33,526 INFO L93 Difference]: Finished difference Result 9104 states and 14554 transitions. [2020-10-14 10:05:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:33,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 10:05:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:33,540 INFO L225 Difference]: With dead ends: 9104 [2020-10-14 10:05:33,540 INFO L226 Difference]: Without dead ends: 5439 [2020-10-14 10:05:33,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5439 states. [2020-10-14 10:05:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5439 to 3702. [2020-10-14 10:05:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3702 states. [2020-10-14 10:05:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 5975 transitions. [2020-10-14 10:05:33,676 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 5975 transitions. Word has length 189 [2020-10-14 10:05:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:33,676 INFO L479 AbstractCegarLoop]: Abstraction has 3702 states and 5975 transitions. [2020-10-14 10:05:33,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 5975 transitions. [2020-10-14 10:05:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 10:05:33,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:33,685 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:33,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:05:33,685 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash 586777886, now seen corresponding path program 1 times [2020-10-14 10:05:33,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:33,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767485326] [2020-10-14 10:05:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 10:05:38,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:38,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:38,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767485326] [2020-10-14 10:05:38,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:38,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:38,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880230644] [2020-10-14 10:05:38,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:38,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:38,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:38,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:38,866 INFO L87 Difference]: Start difference. First operand 3702 states and 5975 transitions. Second operand 5 states. [2020-10-14 10:05:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:39,711 INFO L93 Difference]: Finished difference Result 9484 states and 15115 transitions. [2020-10-14 10:05:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:39,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 10:05:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:39,725 INFO L225 Difference]: With dead ends: 9484 [2020-10-14 10:05:39,726 INFO L226 Difference]: Without dead ends: 5801 [2020-10-14 10:05:39,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-10-14 10:05:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 3684. [2020-10-14 10:05:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2020-10-14 10:05:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5975 transitions. [2020-10-14 10:05:39,867 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5975 transitions. Word has length 190 [2020-10-14 10:05:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:39,867 INFO L479 AbstractCegarLoop]: Abstraction has 3684 states and 5975 transitions. [2020-10-14 10:05:39,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5975 transitions. [2020-10-14 10:05:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 10:05:39,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:39,877 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:39,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:05:39,877 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1893702574, now seen corresponding path program 1 times [2020-10-14 10:05:39,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:39,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108703046] [2020-10-14 10:05:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:44,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 10:05:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4535 [2020-10-14 10:05:44,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:44,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:44,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:05:44,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108703046] [2020-10-14 10:05:44,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:44,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:44,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214854380] [2020-10-14 10:05:44,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:44,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:44,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:44,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:44,526 INFO L87 Difference]: Start difference. First operand 3684 states and 5975 transitions. Second operand 5 states. [2020-10-14 10:05:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:45,533 INFO L93 Difference]: Finished difference Result 9032 states and 14482 transitions. [2020-10-14 10:05:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:45,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-14 10:05:45,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:45,547 INFO L225 Difference]: With dead ends: 9032 [2020-10-14 10:05:45,547 INFO L226 Difference]: Without dead ends: 5367 [2020-10-14 10:05:45,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2020-10-14 10:05:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 4251. [2020-10-14 10:05:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2020-10-14 10:05:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6992 transitions. [2020-10-14 10:05:45,698 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6992 transitions. Word has length 203 [2020-10-14 10:05:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:45,698 INFO L479 AbstractCegarLoop]: Abstraction has 4251 states and 6992 transitions. [2020-10-14 10:05:45,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6992 transitions. [2020-10-14 10:05:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 10:05:45,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:45,709 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:45,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:05:45,709 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash -108574802, now seen corresponding path program 1 times [2020-10-14 10:05:45,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:45,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791383606] [2020-10-14 10:05:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:45,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:45,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 10:05:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4637 [2020-10-14 10:05:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:50,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:05:50,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791383606] [2020-10-14 10:05:50,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:50,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:50,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920252765] [2020-10-14 10:05:50,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:50,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:50,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:50,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:50,472 INFO L87 Difference]: Start difference. First operand 4251 states and 6992 transitions. Second operand 5 states. [2020-10-14 10:05:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:51,442 INFO L93 Difference]: Finished difference Result 9599 states and 15481 transitions. [2020-10-14 10:05:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:51,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-14 10:05:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:51,454 INFO L225 Difference]: With dead ends: 9599 [2020-10-14 10:05:51,454 INFO L226 Difference]: Without dead ends: 5367 [2020-10-14 10:05:51,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2020-10-14 10:05:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 4341. [2020-10-14 10:05:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4341 states. [2020-10-14 10:05:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 7154 transitions. [2020-10-14 10:05:51,604 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 7154 transitions. Word has length 208 [2020-10-14 10:05:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:51,604 INFO L479 AbstractCegarLoop]: Abstraction has 4341 states and 7154 transitions. [2020-10-14 10:05:51,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 7154 transitions. [2020-10-14 10:05:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 10:05:51,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:51,615 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:51,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:05:51,616 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash 378661056, now seen corresponding path program 1 times [2020-10-14 10:05:51,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:51,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801841255] [2020-10-14 10:05:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4707 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:05:56,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801841255] [2020-10-14 10:05:56,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:56,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:56,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797114281] [2020-10-14 10:05:56,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:56,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:56,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:56,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:56,451 INFO L87 Difference]: Start difference. First operand 4341 states and 7154 transitions. Second operand 5 states. [2020-10-14 10:05:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:57,447 INFO L93 Difference]: Finished difference Result 9653 states and 15589 transitions. [2020-10-14 10:05:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:57,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-14 10:05:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:57,460 INFO L225 Difference]: With dead ends: 9653 [2020-10-14 10:05:57,460 INFO L226 Difference]: Without dead ends: 5331 [2020-10-14 10:05:57,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2020-10-14 10:05:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 4359. [2020-10-14 10:05:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-10-14 10:05:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 7172 transitions. [2020-10-14 10:05:57,628 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 7172 transitions. Word has length 209 [2020-10-14 10:05:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:57,629 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 7172 transitions. [2020-10-14 10:05:57,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 7172 transitions. [2020-10-14 10:05:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 10:05:57,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:57,641 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:57,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:05:57,644 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -35793337, now seen corresponding path program 1 times [2020-10-14 10:05:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109553791] [2020-10-14 10:05:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:02,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:06:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:06:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:02,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:02,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-14 10:06:02,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109553791] [2020-10-14 10:06:02,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:02,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:02,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885662808] [2020-10-14 10:06:02,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:02,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:02,803 INFO L87 Difference]: Start difference. First operand 4359 states and 7172 transitions. Second operand 5 states. [2020-10-14 10:06:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:03,927 INFO L93 Difference]: Finished difference Result 10472 states and 16984 transitions. [2020-10-14 10:06:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:03,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 10:06:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:03,938 INFO L225 Difference]: With dead ends: 10472 [2020-10-14 10:06:03,939 INFO L226 Difference]: Without dead ends: 6132 [2020-10-14 10:06:03,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2020-10-14 10:06:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 4818. [2020-10-14 10:06:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-10-14 10:06:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7937 transitions. [2020-10-14 10:06:04,117 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7937 transitions. Word has length 216 [2020-10-14 10:06:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:04,118 INFO L479 AbstractCegarLoop]: Abstraction has 4818 states and 7937 transitions. [2020-10-14 10:06:04,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7937 transitions. [2020-10-14 10:06:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 10:06:04,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:04,132 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:04,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:06:04,132 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash 54266953, now seen corresponding path program 1 times [2020-10-14 10:06:04,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:04,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228681599] [2020-10-14 10:06:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:09,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:06:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:06:09,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228681599] [2020-10-14 10:06:09,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:09,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:09,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608709462] [2020-10-14 10:06:09,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:09,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:09,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:09,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:09,268 INFO L87 Difference]: Start difference. First operand 4818 states and 7937 transitions. Second operand 5 states. [2020-10-14 10:06:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:10,286 INFO L93 Difference]: Finished difference Result 10589 states and 17119 transitions. [2020-10-14 10:06:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:10,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 10:06:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:10,294 INFO L225 Difference]: With dead ends: 10589 [2020-10-14 10:06:10,294 INFO L226 Difference]: Without dead ends: 5790 [2020-10-14 10:06:10,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2020-10-14 10:06:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 4818. [2020-10-14 10:06:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-10-14 10:06:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7919 transitions. [2020-10-14 10:06:10,495 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7919 transitions. Word has length 216 [2020-10-14 10:06:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:10,495 INFO L479 AbstractCegarLoop]: Abstraction has 4818 states and 7919 transitions. [2020-10-14 10:06:10,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7919 transitions. [2020-10-14 10:06:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 10:06:10,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:10,504 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:10,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:06:10,505 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1989541305, now seen corresponding path program 1 times [2020-10-14 10:06:10,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:10,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931029371] [2020-10-14 10:06:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:06:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:15,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:15,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:06:15,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931029371] [2020-10-14 10:06:15,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:15,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:15,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790243518] [2020-10-14 10:06:15,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:15,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:15,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:15,664 INFO L87 Difference]: Start difference. First operand 4818 states and 7919 transitions. Second operand 5 states. [2020-10-14 10:06:16,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:16,679 INFO L93 Difference]: Finished difference Result 11300 states and 18370 transitions. [2020-10-14 10:06:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:16,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 10:06:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:16,687 INFO L225 Difference]: With dead ends: 11300 [2020-10-14 10:06:16,687 INFO L226 Difference]: Without dead ends: 6501 [2020-10-14 10:06:16,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2020-10-14 10:06:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 5385. [2020-10-14 10:06:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5385 states. [2020-10-14 10:06:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8936 transitions. [2020-10-14 10:06:16,876 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8936 transitions. Word has length 217 [2020-10-14 10:06:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:16,877 INFO L479 AbstractCegarLoop]: Abstraction has 5385 states and 8936 transitions. [2020-10-14 10:06:16,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8936 transitions. [2020-10-14 10:06:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 10:06:16,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:16,894 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:16,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:06:16,896 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:16,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1561119470, now seen corresponding path program 1 times [2020-10-14 10:06:16,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:16,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429201661] [2020-10-14 10:06:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:21,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 10:06:21,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:06:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:22,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:06:22,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429201661] [2020-10-14 10:06:22,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:22,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:22,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187262001] [2020-10-14 10:06:22,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:22,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:22,049 INFO L87 Difference]: Start difference. First operand 5385 states and 8936 transitions. Second operand 5 states. [2020-10-14 10:06:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:23,052 INFO L93 Difference]: Finished difference Result 11687 states and 19081 transitions. [2020-10-14 10:06:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:23,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 10:06:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:23,062 INFO L225 Difference]: With dead ends: 11687 [2020-10-14 10:06:23,062 INFO L226 Difference]: Without dead ends: 6321 [2020-10-14 10:06:23,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2020-10-14 10:06:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 5385. [2020-10-14 10:06:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5385 states. [2020-10-14 10:06:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8918 transitions. [2020-10-14 10:06:23,195 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8918 transitions. Word has length 217 [2020-10-14 10:06:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:23,196 INFO L479 AbstractCegarLoop]: Abstraction has 5385 states and 8918 transitions. [2020-10-14 10:06:23,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8918 transitions. [2020-10-14 10:06:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 10:06:23,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:23,203 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:23,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:06:23,203 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1130031390, now seen corresponding path program 1 times [2020-10-14 10:06:23,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:23,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418554324] [2020-10-14 10:06:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 10:06:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:06:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:06:28,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418554324] [2020-10-14 10:06:28,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:28,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:28,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16203950] [2020-10-14 10:06:28,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:28,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:28,341 INFO L87 Difference]: Start difference. First operand 5385 states and 8918 transitions. Second operand 5 states. [2020-10-14 10:06:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:29,369 INFO L93 Difference]: Finished difference Result 11687 states and 19045 transitions. [2020-10-14 10:06:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:29,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 10:06:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:29,378 INFO L225 Difference]: With dead ends: 11687 [2020-10-14 10:06:29,378 INFO L226 Difference]: Without dead ends: 6321 [2020-10-14 10:06:29,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2020-10-14 10:06:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 5475. [2020-10-14 10:06:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5475 states. [2020-10-14 10:06:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 9044 transitions. [2020-10-14 10:06:29,514 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 9044 transitions. Word has length 217 [2020-10-14 10:06:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:29,514 INFO L479 AbstractCegarLoop]: Abstraction has 5475 states and 9044 transitions. [2020-10-14 10:06:29,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 9044 transitions. [2020-10-14 10:06:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 10:06:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:29,519 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:29,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:06:29,519 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1252731795, now seen corresponding path program 1 times [2020-10-14 10:06:29,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:29,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706946878] [2020-10-14 10:06:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:34,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 10:06:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:06:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:34,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:06:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:34,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:06:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:06:34,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706946878] [2020-10-14 10:06:34,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:34,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:34,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783757143] [2020-10-14 10:06:34,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:34,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:34,694 INFO L87 Difference]: Start difference. First operand 5475 states and 9044 transitions. Second operand 5 states. [2020-10-14 10:06:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:35,766 INFO L93 Difference]: Finished difference Result 12614 states and 20620 transitions. [2020-10-14 10:06:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:35,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 10:06:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:35,775 INFO L225 Difference]: With dead ends: 12614 [2020-10-14 10:06:35,776 INFO L226 Difference]: Without dead ends: 7158 [2020-10-14 10:06:35,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2020-10-14 10:06:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 5475. [2020-10-14 10:06:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5475 states. [2020-10-14 10:06:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 9044 transitions. [2020-10-14 10:06:35,931 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 9044 transitions. Word has length 217 [2020-10-14 10:06:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:35,932 INFO L479 AbstractCegarLoop]: Abstraction has 5475 states and 9044 transitions. [2020-10-14 10:06:35,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 9044 transitions. [2020-10-14 10:06:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 10:06:35,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:35,938 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:35,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:06:35,938 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1902832806, now seen corresponding path program 1 times [2020-10-14 10:06:35,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:35,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071873347] [2020-10-14 10:06:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:06:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:06:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:41,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:41,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:06:41,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:41,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:06:41,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071873347] [2020-10-14 10:06:41,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:41,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:41,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685691892] [2020-10-14 10:06:41,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:41,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:41,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:41,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:41,237 INFO L87 Difference]: Start difference. First operand 5475 states and 9044 transitions. Second operand 5 states. [2020-10-14 10:06:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:42,206 INFO L93 Difference]: Finished difference Result 13984 states and 23061 transitions. [2020-10-14 10:06:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:42,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-14 10:06:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:42,219 INFO L225 Difference]: With dead ends: 13984 [2020-10-14 10:06:42,219 INFO L226 Difference]: Without dead ends: 8528 [2020-10-14 10:06:42,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2020-10-14 10:06:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 6042. [2020-10-14 10:06:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6042 states. [2020-10-14 10:06:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6042 states to 6042 states and 10061 transitions. [2020-10-14 10:06:42,366 INFO L78 Accepts]: Start accepts. Automaton has 6042 states and 10061 transitions. Word has length 218 [2020-10-14 10:06:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:42,366 INFO L479 AbstractCegarLoop]: Abstraction has 6042 states and 10061 transitions. [2020-10-14 10:06:42,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6042 states and 10061 transitions. [2020-10-14 10:06:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 10:06:42,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:42,372 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:42,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:06:42,372 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1762356816, now seen corresponding path program 1 times [2020-10-14 10:06:42,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:42,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551404738] [2020-10-14 10:06:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:06:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:47,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:06:47,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551404738] [2020-10-14 10:06:47,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:47,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:47,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110516057] [2020-10-14 10:06:47,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:47,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:47,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:47,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:47,561 INFO L87 Difference]: Start difference. First operand 6042 states and 10061 transitions. Second operand 5 states. [2020-10-14 10:06:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:48,622 INFO L93 Difference]: Finished difference Result 12857 states and 21127 transitions. [2020-10-14 10:06:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:48,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-14 10:06:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:48,630 INFO L225 Difference]: With dead ends: 12857 [2020-10-14 10:06:48,630 INFO L226 Difference]: Without dead ends: 6798 [2020-10-14 10:06:48,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2020-10-14 10:06:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 6024. [2020-10-14 10:06:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 10:06:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 10025 transitions. [2020-10-14 10:06:48,768 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 10025 transitions. Word has length 218 [2020-10-14 10:06:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:48,769 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 10025 transitions. [2020-10-14 10:06:48,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 10025 transitions. [2020-10-14 10:06:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 10:06:48,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:48,775 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:48,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:06:48,775 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1163781963, now seen corresponding path program 1 times [2020-10-14 10:06:48,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:48,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351328159] [2020-10-14 10:06:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 10:06:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:06:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:53,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:06:53,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351328159] [2020-10-14 10:06:53,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:53,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:53,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004196861] [2020-10-14 10:06:53,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:53,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:53,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:53,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:53,891 INFO L87 Difference]: Start difference. First operand 6024 states and 10025 transitions. Second operand 5 states. [2020-10-14 10:06:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:55,029 INFO L93 Difference]: Finished difference Result 13712 states and 22564 transitions. [2020-10-14 10:06:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:55,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-14 10:06:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:55,040 INFO L225 Difference]: With dead ends: 13712 [2020-10-14 10:06:55,041 INFO L226 Difference]: Without dead ends: 7707 [2020-10-14 10:06:55,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7707 states. [2020-10-14 10:06:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7707 to 6681. [2020-10-14 10:06:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6681 states. [2020-10-14 10:06:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6681 states to 6681 states and 11204 transitions. [2020-10-14 10:06:55,204 INFO L78 Accepts]: Start accepts. Automaton has 6681 states and 11204 transitions. Word has length 222 [2020-10-14 10:06:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:55,205 INFO L479 AbstractCegarLoop]: Abstraction has 6681 states and 11204 transitions. [2020-10-14 10:06:55,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6681 states and 11204 transitions. [2020-10-14 10:06:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 10:06:55,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:55,210 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:55,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:06:55,211 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:55,211 INFO L82 PathProgramCache]: Analyzing trace with hash 308469481, now seen corresponding path program 1 times [2020-10-14 10:06:55,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:55,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629982847] [2020-10-14 10:06:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 10:07:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:07:00,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629982847] [2020-10-14 10:07:00,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:00,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:00,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020155374] [2020-10-14 10:07:00,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:00,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:00,354 INFO L87 Difference]: Start difference. First operand 6681 states and 11204 transitions. Second operand 5 states. [2020-10-14 10:07:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:01,475 INFO L93 Difference]: Finished difference Result 15026 states and 24922 transitions. [2020-10-14 10:07:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:01,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-14 10:07:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:01,486 INFO L225 Difference]: With dead ends: 15026 [2020-10-14 10:07:01,486 INFO L226 Difference]: Without dead ends: 8364 [2020-10-14 10:07:01,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2020-10-14 10:07:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 6681. [2020-10-14 10:07:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6681 states. [2020-10-14 10:07:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6681 states to 6681 states and 11204 transitions. [2020-10-14 10:07:01,649 INFO L78 Accepts]: Start accepts. Automaton has 6681 states and 11204 transitions. Word has length 222 [2020-10-14 10:07:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:01,650 INFO L479 AbstractCegarLoop]: Abstraction has 6681 states and 11204 transitions. [2020-10-14 10:07:01,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6681 states and 11204 transitions. [2020-10-14 10:07:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 10:07:01,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:01,658 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:01,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:07:01,659 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:01,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2026977433, now seen corresponding path program 1 times [2020-10-14 10:07:01,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:01,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646747443] [2020-10-14 10:07:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:06,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:06,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646747443] [2020-10-14 10:07:06,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:06,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:06,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722159823] [2020-10-14 10:07:06,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:06,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:06,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:06,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:06,809 INFO L87 Difference]: Start difference. First operand 6681 states and 11204 transitions. Second operand 5 states. [2020-10-14 10:07:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:07,910 INFO L93 Difference]: Finished difference Result 14990 states and 24868 transitions. [2020-10-14 10:07:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:07,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 10:07:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:07,921 INFO L225 Difference]: With dead ends: 14990 [2020-10-14 10:07:07,922 INFO L226 Difference]: Without dead ends: 8328 [2020-10-14 10:07:07,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8328 states. [2020-10-14 10:07:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8328 to 7356. [2020-10-14 10:07:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7356 states. [2020-10-14 10:07:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 12401 transitions. [2020-10-14 10:07:08,100 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 12401 transitions. Word has length 223 [2020-10-14 10:07:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:08,101 INFO L479 AbstractCegarLoop]: Abstraction has 7356 states and 12401 transitions. [2020-10-14 10:07:08,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 12401 transitions. [2020-10-14 10:07:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 10:07:08,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:08,111 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:08,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:07:08,112 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:08,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1529199490, now seen corresponding path program 1 times [2020-10-14 10:07:08,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:08,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70592806] [2020-10-14 10:07:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:09,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 10:07:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:07:13,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:07:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:13,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70592806] [2020-10-14 10:07:13,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:13,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:13,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358292182] [2020-10-14 10:07:13,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:13,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:13,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:13,313 INFO L87 Difference]: Start difference. First operand 7356 states and 12401 transitions. Second operand 5 states. [2020-10-14 10:07:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:14,328 INFO L93 Difference]: Finished difference Result 17251 states and 28812 transitions. [2020-10-14 10:07:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:14,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 10:07:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:14,342 INFO L225 Difference]: With dead ends: 17251 [2020-10-14 10:07:14,342 INFO L226 Difference]: Without dead ends: 9914 [2020-10-14 10:07:14,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2020-10-14 10:07:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 7923. [2020-10-14 10:07:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7923 states. [2020-10-14 10:07:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 13436 transitions. [2020-10-14 10:07:14,540 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 13436 transitions. Word has length 223 [2020-10-14 10:07:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:14,540 INFO L479 AbstractCegarLoop]: Abstraction has 7923 states and 13436 transitions. [2020-10-14 10:07:14,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 13436 transitions. [2020-10-14 10:07:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 10:07:14,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:14,550 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:14,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:07:14,550 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:14,551 INFO L82 PathProgramCache]: Analyzing trace with hash 422131941, now seen corresponding path program 1 times [2020-10-14 10:07:14,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:14,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642766220] [2020-10-14 10:07:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:19,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:19,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:19,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:07:19,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642766220] [2020-10-14 10:07:19,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:19,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:19,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675789307] [2020-10-14 10:07:19,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:19,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:19,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:19,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:19,707 INFO L87 Difference]: Start difference. First operand 7923 states and 13436 transitions. Second operand 5 states. [2020-10-14 10:07:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:20,891 INFO L93 Difference]: Finished difference Result 17474 states and 29332 transitions. [2020-10-14 10:07:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:20,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 10:07:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:20,903 INFO L225 Difference]: With dead ends: 17474 [2020-10-14 10:07:20,903 INFO L226 Difference]: Without dead ends: 9570 [2020-10-14 10:07:20,910 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 [2020-10-14 10:07:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2020-10-14 10:07:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 7923. [2020-10-14 10:07:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7923 states. [2020-10-14 10:07:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 13436 transitions. [2020-10-14 10:07:21,091 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 13436 transitions. Word has length 223 [2020-10-14 10:07:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:21,091 INFO L479 AbstractCegarLoop]: Abstraction has 7923 states and 13436 transitions. [2020-10-14 10:07:21,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 13436 transitions. [2020-10-14 10:07:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 10:07:21,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:21,098 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:21,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:07:21,099 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -389943444, now seen corresponding path program 1 times [2020-10-14 10:07:21,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:21,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382518363] [2020-10-14 10:07:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 10:07:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:26,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382518363] [2020-10-14 10:07:26,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:26,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:26,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806254101] [2020-10-14 10:07:26,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:26,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:26,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:26,306 INFO L87 Difference]: Start difference. First operand 7923 states and 13436 transitions. Second operand 5 states. [2020-10-14 10:07:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:27,345 INFO L93 Difference]: Finished difference Result 17800 states and 29811 transitions. [2020-10-14 10:07:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:27,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-14 10:07:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:27,358 INFO L225 Difference]: With dead ends: 17800 [2020-10-14 10:07:27,358 INFO L226 Difference]: Without dead ends: 9896 [2020-10-14 10:07:27,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9896 states. [2020-10-14 10:07:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9896 to 7266. [2020-10-14 10:07:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7266 states. [2020-10-14 10:07:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 12257 transitions. [2020-10-14 10:07:27,555 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 12257 transitions. Word has length 224 [2020-10-14 10:07:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:27,555 INFO L479 AbstractCegarLoop]: Abstraction has 7266 states and 12257 transitions. [2020-10-14 10:07:27,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 12257 transitions. [2020-10-14 10:07:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 10:07:27,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:27,562 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:27,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:07:27,562 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash -886609478, now seen corresponding path program 1 times [2020-10-14 10:07:27,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:27,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585909714] [2020-10-14 10:07:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 10:07:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 10:07:32,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585909714] [2020-10-14 10:07:32,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:32,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:32,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600157814] [2020-10-14 10:07:32,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:32,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:32,705 INFO L87 Difference]: Start difference. First operand 7266 states and 12257 transitions. Second operand 5 states. [2020-10-14 10:07:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:33,853 INFO L93 Difference]: Finished difference Result 16196 states and 27028 transitions. [2020-10-14 10:07:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:33,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-14 10:07:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:33,864 INFO L225 Difference]: With dead ends: 16196 [2020-10-14 10:07:33,864 INFO L226 Difference]: Without dead ends: 8949 [2020-10-14 10:07:33,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2020-10-14 10:07:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 7923. [2020-10-14 10:07:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7923 states. [2020-10-14 10:07:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 13436 transitions. [2020-10-14 10:07:34,058 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 13436 transitions. Word has length 225 [2020-10-14 10:07:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:34,058 INFO L479 AbstractCegarLoop]: Abstraction has 7923 states and 13436 transitions. [2020-10-14 10:07:34,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 13436 transitions. [2020-10-14 10:07:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 10:07:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:34,065 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:34,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:07:34,066 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:34,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2029389876, now seen corresponding path program 1 times [2020-10-14 10:07:34,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:34,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871310175] [2020-10-14 10:07:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:39,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 10:07:39,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871310175] [2020-10-14 10:07:39,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:39,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:39,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469609225] [2020-10-14 10:07:39,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:39,220 INFO L87 Difference]: Start difference. First operand 7923 states and 13436 transitions. Second operand 5 states. [2020-10-14 10:07:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:40,430 INFO L93 Difference]: Finished difference Result 16817 states and 28153 transitions. [2020-10-14 10:07:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:40,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-14 10:07:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:40,442 INFO L225 Difference]: With dead ends: 16817 [2020-10-14 10:07:40,442 INFO L226 Difference]: Without dead ends: 8913 [2020-10-14 10:07:40,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2020-10-14 10:07:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 7266. [2020-10-14 10:07:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7266 states. [2020-10-14 10:07:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 12257 transitions. [2020-10-14 10:07:40,637 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 12257 transitions. Word has length 226 [2020-10-14 10:07:40,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:40,638 INFO L479 AbstractCegarLoop]: Abstraction has 7266 states and 12257 transitions. [2020-10-14 10:07:40,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 12257 transitions. [2020-10-14 10:07:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 10:07:40,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:40,645 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:40,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:07:40,645 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash -243879858, now seen corresponding path program 1 times [2020-10-14 10:07:40,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:40,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775268048] [2020-10-14 10:07:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking...