/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.16.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:05:30,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:05:30,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:05:30,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:05:30,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:05:30,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:05:30,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:05:30,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:05:30,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:05:30,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:05:30,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:05:30,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:05:30,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:05:30,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:05:30,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:05:30,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:05:30,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:05:30,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:05:30,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:05:30,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:05:30,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:05:30,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:05:30,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:05:30,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:05:30,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:05:30,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:05:30,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:05:30,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:05:30,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:05:30,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:05:30,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:05:30,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:05:30,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:05:30,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:05:30,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:05:30,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:05:30,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:05:30,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:05:30,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:05:30,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:05:30,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:05:30,648 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 10:05:30,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:05:30,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:05:30,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:05:30,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:05:30,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:05:30,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:05:30,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:05:30,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:05:30,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:05:30,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:05:30,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:05:30,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:05:30,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:05:30,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:05:30,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:05:30,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:05:30,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:05:30,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:05:30,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:05:30,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:05:30,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:05:30,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:05:30,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:05:30,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:05:30,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:05:30,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:05:30,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:05:30,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:05:30,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:05:30,706 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 10:05:31,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:05:31,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:05:31,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:05:31,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:05:31,042 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:05:31,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-1.c [2020-10-14 10:05:31,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/829f7341d/157b34128b1347b58bfdc3794003eed5/FLAGa7e512f6f [2020-10-14 10:05:31,730 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:05:31,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-1.c [2020-10-14 10:05:31,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/829f7341d/157b34128b1347b58bfdc3794003eed5/FLAGa7e512f6f [2020-10-14 10:05:31,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/829f7341d/157b34128b1347b58bfdc3794003eed5 [2020-10-14 10:05:31,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:05:31,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:05:31,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:05:31,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:05:31,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:05:31,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:31" (1/1) ... [2020-10-14 10:05:31,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccabf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:31, skipping insertion in model container [2020-10-14 10:05:31,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:31" (1/1) ... [2020-10-14 10:05:31,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:05:32,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:05:32,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:05:32,655 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:05:32,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:05:32,815 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:05:32,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32 WrapperNode [2020-10-14 10:05:32,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:05:32,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:05:32,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:05:32,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:05:32,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (1/1) ... [2020-10-14 10:05:32,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:05:32,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:05:32,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:05:32,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:05:32,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (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 10:05:33,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:05:33,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:05:33,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:05:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:05:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:05:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:05:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:05:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:05:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:05:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:05:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:05:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:05:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:05:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:05:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:05:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:05:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:05:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:05:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:05:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:05:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:05:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:05:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:05:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:05:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:05:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:05:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:05:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:05:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:05:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:05:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:05:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:05:33,854 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:05:34,462 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:05:34,462 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:05:34,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:05:34,486 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:05:34,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:34 BoogieIcfgContainer [2020-10-14 10:05:34,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:05:34,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:05:34,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:05:34,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:05:34,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:31" (1/3) ... [2020-10-14 10:05:34,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3b74ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:34, skipping insertion in model container [2020-10-14 10:05:34,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32" (2/3) ... [2020-10-14 10:05:34,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3b74ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:34, skipping insertion in model container [2020-10-14 10:05:34,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:34" (3/3) ... [2020-10-14 10:05:34,499 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-1.c [2020-10-14 10:05:34,511 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:05:34,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:05:34,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:05:34,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:05:34,560 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:05:34,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:05:34,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:05:34,561 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:05:34,561 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:05:34,561 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:05:34,561 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:05:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-10-14 10:05:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 10:05:34,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:34,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:34,595 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:34,601 INFO L82 PathProgramCache]: Analyzing trace with hash 300426972, now seen corresponding path program 1 times [2020-10-14 10:05:34,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:34,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437935228] [2020-10-14 10:05:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:36,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 10:05:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-14 10:05:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:05:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:05:36,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:36,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:36,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:36,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:05:36,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:36,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:36,177 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 10:05:36,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437935228] [2020-10-14 10:05:36,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:36,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:36,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002753405] [2020-10-14 10:05:36,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:36,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:36,204 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2020-10-14 10:05:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:37,671 INFO L93 Difference]: Finished difference Result 429 states and 730 transitions. [2020-10-14 10:05:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:37,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-14 10:05:37,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:37,694 INFO L225 Difference]: With dead ends: 429 [2020-10-14 10:05:37,694 INFO L226 Difference]: Without dead ends: 252 [2020-10-14 10:05:37,700 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 10:05:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-14 10:05:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 180. [2020-10-14 10:05:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-14 10:05:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 288 transitions. [2020-10-14 10:05:37,801 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 288 transitions. Word has length 49 [2020-10-14 10:05:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:37,802 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 288 transitions. [2020-10-14 10:05:37,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 288 transitions. [2020-10-14 10:05:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 10:05:37,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:37,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:37,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:05:37,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:37,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1864881714, now seen corresponding path program 1 times [2020-10-14 10:05:37,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:37,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293239709] [2020-10-14 10:05:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:05:38,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-14 10:05:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:05:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:38,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:38,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:38,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:05:38,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:38,996 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 10:05:38,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293239709] [2020-10-14 10:05:38,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:38,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:38,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396127775] [2020-10-14 10:05:39,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:39,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:39,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:39,019 INFO L87 Difference]: Start difference. First operand 180 states and 288 transitions. Second operand 5 states. [2020-10-14 10:05:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:40,033 INFO L93 Difference]: Finished difference Result 379 states and 591 transitions. [2020-10-14 10:05:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:40,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-14 10:05:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:40,036 INFO L225 Difference]: With dead ends: 379 [2020-10-14 10:05:40,036 INFO L226 Difference]: Without dead ends: 244 [2020-10-14 10:05:40,038 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 10:05:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-14 10:05:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 181. [2020-10-14 10:05:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 10:05:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 289 transitions. [2020-10-14 10:05:40,050 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 289 transitions. Word has length 50 [2020-10-14 10:05:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:40,051 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 289 transitions. [2020-10-14 10:05:40,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 289 transitions. [2020-10-14 10:05:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 10:05:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:40,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:40,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:05:40,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1601884426, now seen corresponding path program 1 times [2020-10-14 10:05:40,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:40,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15849307] [2020-10-14 10:05:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:41,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 10:05:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-14 10:05:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:41,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 10:05:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:41,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:41,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15849307] [2020-10-14 10:05:41,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:41,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:41,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920047382] [2020-10-14 10:05:41,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:41,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:41,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:41,246 INFO L87 Difference]: Start difference. First operand 181 states and 289 transitions. Second operand 5 states. [2020-10-14 10:05:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:42,586 INFO L93 Difference]: Finished difference Result 427 states and 676 transitions. [2020-10-14 10:05:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:42,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-14 10:05:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:42,589 INFO L225 Difference]: With dead ends: 427 [2020-10-14 10:05:42,589 INFO L226 Difference]: Without dead ends: 292 [2020-10-14 10:05:42,592 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 10:05:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-14 10:05:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 220. [2020-10-14 10:05:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 10:05:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 361 transitions. [2020-10-14 10:05:42,620 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 361 transitions. Word has length 62 [2020-10-14 10:05:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:42,622 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 361 transitions. [2020-10-14 10:05:42,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 361 transitions. [2020-10-14 10:05:42,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:05:42,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:42,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:42,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:05:42,627 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:42,627 INFO L82 PathProgramCache]: Analyzing trace with hash 201027718, now seen corresponding path program 1 times [2020-10-14 10:05:42,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:42,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737576914] [2020-10-14 10:05:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:05:46,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:46,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4232 [2020-10-14 10:05:46,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:46,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737576914] [2020-10-14 10:05:47,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:47,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610306967] [2020-10-14 10:05:47,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:47,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:47,010 INFO L87 Difference]: Start difference. First operand 220 states and 361 transitions. Second operand 5 states. [2020-10-14 10:05:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:48,248 INFO L93 Difference]: Finished difference Result 505 states and 820 transitions. [2020-10-14 10:05:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:48,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 10:05:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:48,252 INFO L225 Difference]: With dead ends: 505 [2020-10-14 10:05:48,252 INFO L226 Difference]: Without dead ends: 331 [2020-10-14 10:05:48,253 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 10:05:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-14 10:05:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 220. [2020-10-14 10:05:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 10:05:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 361 transitions. [2020-10-14 10:05:48,266 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 361 transitions. Word has length 63 [2020-10-14 10:05:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:48,267 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 361 transitions. [2020-10-14 10:05:48,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 361 transitions. [2020-10-14 10:05:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:05:48,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:48,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:48,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:05:48,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash -739610172, now seen corresponding path program 1 times [2020-10-14 10:05:48,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:48,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456396474] [2020-10-14 10:05:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:49,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:05:49,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-14 10:05:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:49,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 10:05:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:05:49,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:05:49,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:49,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:49,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456396474] [2020-10-14 10:05:49,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:49,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581329776] [2020-10-14 10:05:49,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:49,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:49,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:49,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:49,137 INFO L87 Difference]: Start difference. First operand 220 states and 361 transitions. Second operand 5 states. [2020-10-14 10:05:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:50,283 INFO L93 Difference]: Finished difference Result 497 states and 808 transitions. [2020-10-14 10:05:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:50,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 10:05:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:50,287 INFO L225 Difference]: With dead ends: 497 [2020-10-14 10:05:50,287 INFO L226 Difference]: Without dead ends: 323 [2020-10-14 10:05:50,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-14 10:05:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 228. [2020-10-14 10:05:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 10:05:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 374 transitions. [2020-10-14 10:05:50,304 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 374 transitions. Word has length 63 [2020-10-14 10:05:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:50,308 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 374 transitions. [2020-10-14 10:05:50,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 374 transitions. [2020-10-14 10:05:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:05:50,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:50,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:50,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:05:50,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1917955632, now seen corresponding path program 1 times [2020-10-14 10:05:50,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:50,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363572500] [2020-10-14 10:05:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:50,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:05:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 10:05:50,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:50,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:50,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:50,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363572500] [2020-10-14 10:05:50,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:50,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:50,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213016818] [2020-10-14 10:05:50,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:50,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:50,746 INFO L87 Difference]: Start difference. First operand 228 states and 374 transitions. Second operand 5 states. [2020-10-14 10:05:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:51,890 INFO L93 Difference]: Finished difference Result 554 states and 907 transitions. [2020-10-14 10:05:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:51,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 10:05:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:51,895 INFO L225 Difference]: With dead ends: 554 [2020-10-14 10:05:51,895 INFO L226 Difference]: Without dead ends: 340 [2020-10-14 10:05:51,896 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 10:05:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-14 10:05:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 229. [2020-10-14 10:05:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 10:05:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 375 transitions. [2020-10-14 10:05:51,905 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 375 transitions. Word has length 63 [2020-10-14 10:05:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:51,905 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 375 transitions. [2020-10-14 10:05:51,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 375 transitions. [2020-10-14 10:05:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:05:51,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:51,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:51,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:05:51,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1216495160, now seen corresponding path program 1 times [2020-10-14 10:05:51,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:51,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548817669] [2020-10-14 10:05:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:05:55,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3688 [2020-10-14 10:05:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:55,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:55,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548817669] [2020-10-14 10:05:55,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:55,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:55,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684372939] [2020-10-14 10:05:55,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:55,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:55,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:55,711 INFO L87 Difference]: Start difference. First operand 229 states and 375 transitions. Second operand 5 states. [2020-10-14 10:05:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:56,834 INFO L93 Difference]: Finished difference Result 547 states and 896 transitions. [2020-10-14 10:05:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:56,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 10:05:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:56,838 INFO L225 Difference]: With dead ends: 547 [2020-10-14 10:05:56,838 INFO L226 Difference]: Without dead ends: 332 [2020-10-14 10:05:56,839 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 10:05:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-14 10:05:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 229. [2020-10-14 10:05:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 10:05:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 375 transitions. [2020-10-14 10:05:56,847 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 375 transitions. Word has length 64 [2020-10-14 10:05:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:56,848 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 375 transitions. [2020-10-14 10:05:56,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 375 transitions. [2020-10-14 10:05:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:05:56,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:56,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:56,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:05:56,849 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:56,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1372325223, now seen corresponding path program 1 times [2020-10-14 10:05:56,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:56,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218525120] [2020-10-14 10:05:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:06:01,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:06:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:06:01,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:01,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:06:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:01,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:01,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218525120] [2020-10-14 10:06:01,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:01,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:01,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596500718] [2020-10-14 10:06:01,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:01,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:01,978 INFO L87 Difference]: Start difference. First operand 229 states and 375 transitions. Second operand 5 states. [2020-10-14 10:06:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:02,785 INFO L93 Difference]: Finished difference Result 610 states and 1005 transitions. [2020-10-14 10:06:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:02,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 10:06:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:02,789 INFO L225 Difference]: With dead ends: 610 [2020-10-14 10:06:02,789 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 10:06:02,790 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 10:06:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 10:06:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 230. [2020-10-14 10:06:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 10:06:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 376 transitions. [2020-10-14 10:06:02,799 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 376 transitions. Word has length 64 [2020-10-14 10:06:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:02,799 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 376 transitions. [2020-10-14 10:06:02,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 376 transitions. [2020-10-14 10:06:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:06:02,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:02,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:02,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:06:02,801 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1814497726, now seen corresponding path program 1 times [2020-10-14 10:06:02,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:02,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885489934] [2020-10-14 10:06:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:06:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 10:06:03,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:03,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:06:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:03,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:03,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:03,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885489934] [2020-10-14 10:06:03,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:03,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:03,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067112900] [2020-10-14 10:06:03,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:03,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:03,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:03,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:03,213 INFO L87 Difference]: Start difference. First operand 230 states and 376 transitions. Second operand 5 states. [2020-10-14 10:06:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:04,257 INFO L93 Difference]: Finished difference Result 549 states and 898 transitions. [2020-10-14 10:06:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:04,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 10:06:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:04,263 INFO L225 Difference]: With dead ends: 549 [2020-10-14 10:06:04,263 INFO L226 Difference]: Without dead ends: 333 [2020-10-14 10:06:04,264 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 10:06:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-14 10:06:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 230. [2020-10-14 10:06:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 10:06:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 376 transitions. [2020-10-14 10:06:04,279 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 376 transitions. Word has length 64 [2020-10-14 10:06:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:04,279 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 376 transitions. [2020-10-14 10:06:04,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 376 transitions. [2020-10-14 10:06:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 10:06:04,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:04,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:04,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:06:04,283 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1549171221, now seen corresponding path program 1 times [2020-10-14 10:06:04,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:04,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325893110] [2020-10-14 10:06:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:09,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 10:06:09,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:06:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:06:09,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:09,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:06:09,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:09,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:09,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:09,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325893110] [2020-10-14 10:06:09,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:09,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:09,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644596692] [2020-10-14 10:06:09,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:09,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:09,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:09,425 INFO L87 Difference]: Start difference. First operand 230 states and 376 transitions. Second operand 5 states. [2020-10-14 10:06:10,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:10,592 INFO L93 Difference]: Finished difference Result 564 states and 922 transitions. [2020-10-14 10:06:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:10,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-14 10:06:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:10,596 INFO L225 Difference]: With dead ends: 564 [2020-10-14 10:06:10,597 INFO L226 Difference]: Without dead ends: 348 [2020-10-14 10:06:10,598 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 10:06:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-14 10:06:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 191. [2020-10-14 10:06:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 10:06:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 304 transitions. [2020-10-14 10:06:10,612 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 304 transitions. Word has length 65 [2020-10-14 10:06:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:10,613 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 304 transitions. [2020-10-14 10:06:10,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 304 transitions. [2020-10-14 10:06:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 10:06:10,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:10,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:10,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:06:10,615 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1314137505, now seen corresponding path program 1 times [2020-10-14 10:06:10,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:10,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177576652] [2020-10-14 10:06:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 10:06:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 10:06:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:10,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:10,970 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 10:06:10,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177576652] [2020-10-14 10:06:10,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:10,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:10,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976322481] [2020-10-14 10:06:10,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:10,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:10,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:10,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:10,973 INFO L87 Difference]: Start difference. First operand 191 states and 304 transitions. Second operand 5 states. [2020-10-14 10:06:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:12,223 INFO L93 Difference]: Finished difference Result 479 states and 766 transitions. [2020-10-14 10:06:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:12,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-14 10:06:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:12,226 INFO L225 Difference]: With dead ends: 479 [2020-10-14 10:06:12,226 INFO L226 Difference]: Without dead ends: 302 [2020-10-14 10:06:12,228 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 10:06:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-14 10:06:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 230. [2020-10-14 10:06:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 10:06:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 376 transitions. [2020-10-14 10:06:12,243 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 376 transitions. Word has length 66 [2020-10-14 10:06:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:12,243 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 376 transitions. [2020-10-14 10:06:12,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 376 transitions. [2020-10-14 10:06:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:06:12,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:12,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:12,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:06:12,245 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1069830131, now seen corresponding path program 1 times [2020-10-14 10:06:12,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:12,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152917934] [2020-10-14 10:06:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:12,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 10:06:12,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:12,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:12,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:12,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:12,470 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 10:06:12,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152917934] [2020-10-14 10:06:12,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:12,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:12,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557303840] [2020-10-14 10:06:12,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:12,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:12,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:12,473 INFO L87 Difference]: Start difference. First operand 230 states and 376 transitions. Second operand 5 states. [2020-10-14 10:06:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:13,587 INFO L93 Difference]: Finished difference Result 510 states and 826 transitions. [2020-10-14 10:06:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:13,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-14 10:06:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:13,590 INFO L225 Difference]: With dead ends: 510 [2020-10-14 10:06:13,590 INFO L226 Difference]: Without dead ends: 294 [2020-10-14 10:06:13,591 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 10:06:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-14 10:06:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 191. [2020-10-14 10:06:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 10:06:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 304 transitions. [2020-10-14 10:06:13,600 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 304 transitions. Word has length 67 [2020-10-14 10:06:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:13,600 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 304 transitions. [2020-10-14 10:06:13,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 304 transitions. [2020-10-14 10:06:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 10:06:13,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:13,601 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:06:13,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:06:13,602 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:13,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1801222975, now seen corresponding path program 1 times [2020-10-14 10:06:13,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:13,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722593339] [2020-10-14 10:06:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:06:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:14,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:14,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722593339] [2020-10-14 10:06:14,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:14,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:14,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507619735] [2020-10-14 10:06:14,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:14,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:14,438 INFO L87 Difference]: Start difference. First operand 191 states and 304 transitions. Second operand 4 states. [2020-10-14 10:06:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:14,996 INFO L93 Difference]: Finished difference Result 541 states and 873 transitions. [2020-10-14 10:06:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:14,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 10:06:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:14,999 INFO L225 Difference]: With dead ends: 541 [2020-10-14 10:06:15,000 INFO L226 Difference]: Without dead ends: 364 [2020-10-14 10:06:15,000 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 10:06:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-14 10:06:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 362. [2020-10-14 10:06:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-14 10:06:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 568 transitions. [2020-10-14 10:06:15,011 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 568 transitions. Word has length 71 [2020-10-14 10:06:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:15,012 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 568 transitions. [2020-10-14 10:06:15,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 568 transitions. [2020-10-14 10:06:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 10:06:15,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:15,013 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:06:15,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:06:15,014 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash 903829697, now seen corresponding path program 1 times [2020-10-14 10:06:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:15,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379757545] [2020-10-14 10:06:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 10:06:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 10:06:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:15,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379757545] [2020-10-14 10:06:15,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:15,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:15,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213041038] [2020-10-14 10:06:15,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:15,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:15,698 INFO L87 Difference]: Start difference. First operand 362 states and 568 transitions. Second operand 5 states. [2020-10-14 10:06:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:16,839 INFO L93 Difference]: Finished difference Result 763 states and 1195 transitions. [2020-10-14 10:06:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:16,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 10:06:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:16,843 INFO L225 Difference]: With dead ends: 763 [2020-10-14 10:06:16,843 INFO L226 Difference]: Without dead ends: 582 [2020-10-14 10:06:16,844 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 10:06:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-14 10:06:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 442. [2020-10-14 10:06:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-14 10:06:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 714 transitions. [2020-10-14 10:06:16,860 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 714 transitions. Word has length 71 [2020-10-14 10:06:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:16,860 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 714 transitions. [2020-10-14 10:06:16,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 714 transitions. [2020-10-14 10:06:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 10:06:16,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:16,862 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:06:16,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:06:16,863 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:16,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1327476419, now seen corresponding path program 1 times [2020-10-14 10:06:16,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:16,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026827653] [2020-10-14 10:06:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:16,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:18,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:18,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:18,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:18,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:18,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026827653] [2020-10-14 10:06:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:18,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:18,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949933544] [2020-10-14 10:06:18,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:18,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:18,278 INFO L87 Difference]: Start difference. First operand 442 states and 714 transitions. Second operand 5 states. [2020-10-14 10:06:19,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:19,445 INFO L93 Difference]: Finished difference Result 881 states and 1412 transitions. [2020-10-14 10:06:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:19,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 10:06:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:19,450 INFO L225 Difference]: With dead ends: 881 [2020-10-14 10:06:19,450 INFO L226 Difference]: Without dead ends: 660 [2020-10-14 10:06:19,455 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 10:06:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-14 10:06:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 440. [2020-10-14 10:06:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-14 10:06:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 712 transitions. [2020-10-14 10:06:19,479 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 712 transitions. Word has length 71 [2020-10-14 10:06:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:19,480 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 712 transitions. [2020-10-14 10:06:19,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 712 transitions. [2020-10-14 10:06:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 10:06:19,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:19,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:19,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:06:19,485 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash 311266317, now seen corresponding path program 1 times [2020-10-14 10:06:19,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:19,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862942818] [2020-10-14 10:06:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:06:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:20,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:20,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:20,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862942818] [2020-10-14 10:06:20,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:20,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:20,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561839072] [2020-10-14 10:06:20,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:20,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:20,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:20,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:20,415 INFO L87 Difference]: Start difference. First operand 440 states and 712 transitions. Second operand 5 states. [2020-10-14 10:06:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:21,491 INFO L93 Difference]: Finished difference Result 878 states and 1409 transitions. [2020-10-14 10:06:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:21,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 10:06:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:21,495 INFO L225 Difference]: With dead ends: 878 [2020-10-14 10:06:21,496 INFO L226 Difference]: Without dead ends: 658 [2020-10-14 10:06:21,497 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 10:06:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-14 10:06:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 440. [2020-10-14 10:06:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-14 10:06:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 712 transitions. [2020-10-14 10:06:21,512 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 712 transitions. Word has length 71 [2020-10-14 10:06:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:21,513 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 712 transitions. [2020-10-14 10:06:21,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 712 transitions. [2020-10-14 10:06:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 10:06:21,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:21,515 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:06:21,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:06:21,515 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -904470291, now seen corresponding path program 1 times [2020-10-14 10:06:21,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:21,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32798068] [2020-10-14 10:06:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:21,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:22,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32798068] [2020-10-14 10:06:22,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:22,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:22,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409464691] [2020-10-14 10:06:22,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:22,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:22,048 INFO L87 Difference]: Start difference. First operand 440 states and 712 transitions. Second operand 5 states. [2020-10-14 10:06:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:23,156 INFO L93 Difference]: Finished difference Result 868 states and 1394 transitions. [2020-10-14 10:06:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:23,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 10:06:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:23,160 INFO L225 Difference]: With dead ends: 868 [2020-10-14 10:06:23,160 INFO L226 Difference]: Without dead ends: 648 [2020-10-14 10:06:23,161 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 10:06:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-14 10:06:23,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 441. [2020-10-14 10:06:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:06:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 713 transitions. [2020-10-14 10:06:23,179 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 713 transitions. Word has length 72 [2020-10-14 10:06:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:23,179 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 713 transitions. [2020-10-14 10:06:23,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 713 transitions. [2020-10-14 10:06:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 10:06:23,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:23,181 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:06:23,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:06:23,181 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:23,182 INFO L82 PathProgramCache]: Analyzing trace with hash -656323797, now seen corresponding path program 1 times [2020-10-14 10:06:23,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:23,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882906598] [2020-10-14 10:06:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:06:24,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:24,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:24,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:24,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882906598] [2020-10-14 10:06:24,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:24,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:24,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323372301] [2020-10-14 10:06:24,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:24,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:24,198 INFO L87 Difference]: Start difference. First operand 441 states and 713 transitions. Second operand 5 states. [2020-10-14 10:06:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:25,344 INFO L93 Difference]: Finished difference Result 867 states and 1393 transitions. [2020-10-14 10:06:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:25,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 10:06:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:25,348 INFO L225 Difference]: With dead ends: 867 [2020-10-14 10:06:25,348 INFO L226 Difference]: Without dead ends: 647 [2020-10-14 10:06:25,349 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 10:06:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-14 10:06:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 439. [2020-10-14 10:06:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-14 10:06:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 711 transitions. [2020-10-14 10:06:25,364 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 711 transitions. Word has length 72 [2020-10-14 10:06:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:25,364 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 711 transitions. [2020-10-14 10:06:25,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 711 transitions. [2020-10-14 10:06:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 10:06:25,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:25,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:25,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:06:25,366 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2094065887, now seen corresponding path program 1 times [2020-10-14 10:06:25,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:25,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119569666] [2020-10-14 10:06:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:26,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119569666] [2020-10-14 10:06:26,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:26,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:26,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869565468] [2020-10-14 10:06:26,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:26,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:26,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:26,354 INFO L87 Difference]: Start difference. First operand 439 states and 711 transitions. Second operand 5 states. [2020-10-14 10:06:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:27,432 INFO L93 Difference]: Finished difference Result 786 states and 1246 transitions. [2020-10-14 10:06:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:27,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 10:06:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:27,436 INFO L225 Difference]: With dead ends: 786 [2020-10-14 10:06:27,436 INFO L226 Difference]: Without dead ends: 567 [2020-10-14 10:06:27,437 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 10:06:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-14 10:06:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 361. [2020-10-14 10:06:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 10:06:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 567 transitions. [2020-10-14 10:06:27,451 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 567 transitions. Word has length 72 [2020-10-14 10:06:27,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:27,452 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 567 transitions. [2020-10-14 10:06:27,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 567 transitions. [2020-10-14 10:06:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 10:06:27,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:27,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:27,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:06:27,454 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:27,454 INFO L82 PathProgramCache]: Analyzing trace with hash 809155367, now seen corresponding path program 1 times [2020-10-14 10:06:27,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:27,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934448759] [2020-10-14 10:06:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 10:06:28,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 10:06:28,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 10:06:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:28,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:28,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:28,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934448759] [2020-10-14 10:06:28,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:28,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:28,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910225601] [2020-10-14 10:06:28,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:28,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:28,525 INFO L87 Difference]: Start difference. First operand 361 states and 567 transitions. Second operand 5 states. [2020-10-14 10:06:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:29,975 INFO L93 Difference]: Finished difference Result 759 states and 1191 transitions. [2020-10-14 10:06:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:29,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 10:06:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:29,978 INFO L225 Difference]: With dead ends: 759 [2020-10-14 10:06:29,979 INFO L226 Difference]: Without dead ends: 579 [2020-10-14 10:06:29,979 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 10:06:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-14 10:06:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 439. [2020-10-14 10:06:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-14 10:06:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 711 transitions. [2020-10-14 10:06:29,996 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 711 transitions. Word has length 74 [2020-10-14 10:06:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:29,997 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 711 transitions. [2020-10-14 10:06:29,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 711 transitions. [2020-10-14 10:06:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 10:06:29,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:29,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:29,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:06:29,999 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash 455592775, now seen corresponding path program 1 times [2020-10-14 10:06:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:30,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392549070] [2020-10-14 10:06:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 10:06:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:30,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:30,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:30,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:30,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:30,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:30,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392549070] [2020-10-14 10:06:30,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:30,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:30,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398734691] [2020-10-14 10:06:30,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:30,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:30,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:30,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:30,995 INFO L87 Difference]: Start difference. First operand 439 states and 711 transitions. Second operand 5 states. [2020-10-14 10:06:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:32,081 INFO L93 Difference]: Finished difference Result 786 states and 1246 transitions. [2020-10-14 10:06:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:32,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-14 10:06:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:32,085 INFO L225 Difference]: With dead ends: 786 [2020-10-14 10:06:32,085 INFO L226 Difference]: Without dead ends: 567 [2020-10-14 10:06:32,086 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 10:06:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-14 10:06:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 361. [2020-10-14 10:06:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 10:06:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 567 transitions. [2020-10-14 10:06:32,102 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 567 transitions. Word has length 75 [2020-10-14 10:06:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:32,102 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 567 transitions. [2020-10-14 10:06:32,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 567 transitions. [2020-10-14 10:06:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 10:06:32,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:32,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:32,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:06:32,104 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:32,104 INFO L82 PathProgramCache]: Analyzing trace with hash 918141538, now seen corresponding path program 1 times [2020-10-14 10:06:32,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:32,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435680268] [2020-10-14 10:06:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 10:06:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3802 [2020-10-14 10:06:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:06:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:35,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:35,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:35,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435680268] [2020-10-14 10:06:35,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:35,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:35,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967521529] [2020-10-14 10:06:35,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:35,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:35,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:35,987 INFO L87 Difference]: Start difference. First operand 361 states and 567 transitions. Second operand 5 states. [2020-10-14 10:06:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:37,097 INFO L93 Difference]: Finished difference Result 759 states and 1191 transitions. [2020-10-14 10:06:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:37,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-14 10:06:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:37,104 INFO L225 Difference]: With dead ends: 759 [2020-10-14 10:06:37,105 INFO L226 Difference]: Without dead ends: 579 [2020-10-14 10:06:37,106 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 10:06:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-14 10:06:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 439. [2020-10-14 10:06:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-14 10:06:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 711 transitions. [2020-10-14 10:06:37,124 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 711 transitions. Word has length 77 [2020-10-14 10:06:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:37,124 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 711 transitions. [2020-10-14 10:06:37,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 711 transitions. [2020-10-14 10:06:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 10:06:37,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:37,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:37,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:06:37,126 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash -460803220, now seen corresponding path program 1 times [2020-10-14 10:06:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:37,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932162982] [2020-10-14 10:06:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3604 [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:06:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:40,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932162982] [2020-10-14 10:06:40,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:40,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:40,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387913943] [2020-10-14 10:06:40,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:40,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:40,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:40,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:40,808 INFO L87 Difference]: Start difference. First operand 439 states and 711 transitions. Second operand 5 states. [2020-10-14 10:06:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:41,917 INFO L93 Difference]: Finished difference Result 786 states and 1246 transitions. [2020-10-14 10:06:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:41,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-14 10:06:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:41,923 INFO L225 Difference]: With dead ends: 786 [2020-10-14 10:06:41,923 INFO L226 Difference]: Without dead ends: 567 [2020-10-14 10:06:41,924 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 10:06:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-14 10:06:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 361. [2020-10-14 10:06:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 10:06:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 567 transitions. [2020-10-14 10:06:41,937 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 567 transitions. Word has length 78 [2020-10-14 10:06:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:41,937 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 567 transitions. [2020-10-14 10:06:41,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 567 transitions. [2020-10-14 10:06:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 10:06:41,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:41,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:41,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:06:41,939 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1174444763, now seen corresponding path program 1 times [2020-10-14 10:06:41,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:41,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361025980] [2020-10-14 10:06:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:42,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:06:42,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:06:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:42,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361025980] [2020-10-14 10:06:42,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:42,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:42,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807700719] [2020-10-14 10:06:42,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:42,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:42,289 INFO L87 Difference]: Start difference. First operand 361 states and 567 transitions. Second operand 5 states. [2020-10-14 10:06:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:43,168 INFO L93 Difference]: Finished difference Result 801 states and 1254 transitions. [2020-10-14 10:06:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:43,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-14 10:06:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:43,171 INFO L225 Difference]: With dead ends: 801 [2020-10-14 10:06:43,171 INFO L226 Difference]: Without dead ends: 454 [2020-10-14 10:06:43,172 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 10:06:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-14 10:06:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 385. [2020-10-14 10:06:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-14 10:06:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 612 transitions. [2020-10-14 10:06:43,185 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 612 transitions. Word has length 78 [2020-10-14 10:06:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:43,186 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 612 transitions. [2020-10-14 10:06:43,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 612 transitions. [2020-10-14 10:06:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:06:43,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:43,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:43,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:06:43,188 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1662360156, now seen corresponding path program 1 times [2020-10-14 10:06:43,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:43,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328864220] [2020-10-14 10:06:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:06:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:45,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:45,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:45,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:06:45,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:45,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:45,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328864220] [2020-10-14 10:06:45,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:45,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:45,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890327025] [2020-10-14 10:06:45,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:45,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:45,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:45,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:45,697 INFO L87 Difference]: Start difference. First operand 385 states and 612 transitions. Second operand 5 states. [2020-10-14 10:06:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:46,781 INFO L93 Difference]: Finished difference Result 863 states and 1382 transitions. [2020-10-14 10:06:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:46,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-14 10:06:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:46,784 INFO L225 Difference]: With dead ends: 863 [2020-10-14 10:06:46,784 INFO L226 Difference]: Without dead ends: 683 [2020-10-14 10:06:46,785 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 10:06:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-14 10:06:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 463. [2020-10-14 10:06:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 10:06:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2020-10-14 10:06:46,800 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 80 [2020-10-14 10:06:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:46,800 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2020-10-14 10:06:46,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2020-10-14 10:06:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 10:06:46,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:46,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:46,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:06:46,803 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:46,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1148022890, now seen corresponding path program 1 times [2020-10-14 10:06:46,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:46,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635904044] [2020-10-14 10:06:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:49,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 10:06:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-10-14 10:06:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:49,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:06:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:49,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635904044] [2020-10-14 10:06:49,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:49,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:49,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923327477] [2020-10-14 10:06:49,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:49,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:49,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:49,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:49,330 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand 5 states. [2020-10-14 10:06:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:50,414 INFO L93 Difference]: Finished difference Result 890 states and 1437 transitions. [2020-10-14 10:06:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:50,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-14 10:06:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:50,418 INFO L225 Difference]: With dead ends: 890 [2020-10-14 10:06:50,418 INFO L226 Difference]: Without dead ends: 671 [2020-10-14 10:06:50,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-14 10:06:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 385. [2020-10-14 10:06:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-14 10:06:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 612 transitions. [2020-10-14 10:06:50,437 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 612 transitions. Word has length 81 [2020-10-14 10:06:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:50,437 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 612 transitions. [2020-10-14 10:06:50,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 612 transitions. [2020-10-14 10:06:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 10:06:50,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:50,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:50,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:06:50,439 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash -129297724, now seen corresponding path program 1 times [2020-10-14 10:06:50,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:50,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739891625] [2020-10-14 10:06:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:50,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:51,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:51,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:51,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:51,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:51,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:51,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739891625] [2020-10-14 10:06:51,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:51,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:51,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140600783] [2020-10-14 10:06:51,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:51,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:51,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:51,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:51,538 INFO L87 Difference]: Start difference. First operand 385 states and 612 transitions. Second operand 5 states. [2020-10-14 10:06:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:52,606 INFO L93 Difference]: Finished difference Result 783 states and 1236 transitions. [2020-10-14 10:06:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:52,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-14 10:06:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:52,610 INFO L225 Difference]: With dead ends: 783 [2020-10-14 10:06:52,611 INFO L226 Difference]: Without dead ends: 603 [2020-10-14 10:06:52,614 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 10:06:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-14 10:06:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 463. [2020-10-14 10:06:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 10:06:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2020-10-14 10:06:52,629 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 81 [2020-10-14 10:06:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:52,630 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2020-10-14 10:06:52,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2020-10-14 10:06:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 10:06:52,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:52,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:52,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:06:52,633 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1428318026, now seen corresponding path program 1 times [2020-10-14 10:06:52,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:52,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582665738] [2020-10-14 10:06:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:06:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:53,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:53,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582665738] [2020-10-14 10:06:53,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:53,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:53,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531867026] [2020-10-14 10:06:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:53,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:53,668 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand 5 states. [2020-10-14 10:06:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:54,788 INFO L93 Difference]: Finished difference Result 810 states and 1291 transitions. [2020-10-14 10:06:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:54,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-14 10:06:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:54,795 INFO L225 Difference]: With dead ends: 810 [2020-10-14 10:06:54,795 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 10:06:54,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 10:06:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 385. [2020-10-14 10:06:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-14 10:06:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 612 transitions. [2020-10-14 10:06:54,811 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 612 transitions. Word has length 82 [2020-10-14 10:06:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:54,811 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 612 transitions. [2020-10-14 10:06:54,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 612 transitions. [2020-10-14 10:06:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 10:06:54,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:54,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:54,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:06:54,813 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2020922617, now seen corresponding path program 1 times [2020-10-14 10:06:54,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:54,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509736832] [2020-10-14 10:06:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:55,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509736832] [2020-10-14 10:06:55,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:55,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:55,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607641167] [2020-10-14 10:06:55,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:55,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:55,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:55,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:55,900 INFO L87 Difference]: Start difference. First operand 385 states and 612 transitions. Second operand 5 states. [2020-10-14 10:06:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:57,026 INFO L93 Difference]: Finished difference Result 783 states and 1236 transitions. [2020-10-14 10:06:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:57,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-14 10:06:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:57,030 INFO L225 Difference]: With dead ends: 783 [2020-10-14 10:06:57,030 INFO L226 Difference]: Without dead ends: 603 [2020-10-14 10:06:57,031 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 10:06:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-14 10:06:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 463. [2020-10-14 10:06:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 10:06:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2020-10-14 10:06:57,046 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 82 [2020-10-14 10:06:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:57,046 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2020-10-14 10:06:57,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2020-10-14 10:06:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 10:06:57,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:57,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:57,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:06:57,048 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash -733358308, now seen corresponding path program 1 times [2020-10-14 10:06:57,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:57,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304231895] [2020-10-14 10:06:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 10:06:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-14 10:06:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:57,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 10:06:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:57,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304231895] [2020-10-14 10:06:57,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:57,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:57,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210589933] [2020-10-14 10:06:57,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:57,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:57,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:57,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:57,836 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand 5 states. [2020-10-14 10:06:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:58,952 INFO L93 Difference]: Finished difference Result 900 states and 1452 transitions. [2020-10-14 10:06:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:58,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-14 10:06:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:58,960 INFO L225 Difference]: With dead ends: 900 [2020-10-14 10:06:58,960 INFO L226 Difference]: Without dead ends: 681 [2020-10-14 10:06:58,960 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 10:06:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-14 10:06:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 463. [2020-10-14 10:06:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 10:06:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2020-10-14 10:06:58,975 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 83 [2020-10-14 10:06:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:58,976 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2020-10-14 10:06:58,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2020-10-14 10:06:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 10:06:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:58,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:58,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:06:58,978 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:58,979 INFO L82 PathProgramCache]: Analyzing trace with hash -634328139, now seen corresponding path program 1 times [2020-10-14 10:06:58,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:58,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691137078] [2020-10-14 10:06:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 10:06:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-14 10:06:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:59,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 10:06:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:59,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691137078] [2020-10-14 10:06:59,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:59,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:59,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039627866] [2020-10-14 10:06:59,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:59,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:59,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:59,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:59,647 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand 5 states. [2020-10-14 10:07:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:00,725 INFO L93 Difference]: Finished difference Result 888 states and 1435 transitions. [2020-10-14 10:07:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:00,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-14 10:07:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:00,729 INFO L225 Difference]: With dead ends: 888 [2020-10-14 10:07:00,729 INFO L226 Difference]: Without dead ends: 669 [2020-10-14 10:07:00,730 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 10:07:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-14 10:07:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 463. [2020-10-14 10:07:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 10:07:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2020-10-14 10:07:00,746 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 83 [2020-10-14 10:07:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:00,747 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2020-10-14 10:07:00,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2020-10-14 10:07:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 10:07:00,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:00,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:00,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:07:00,749 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:00,750 INFO L82 PathProgramCache]: Analyzing trace with hash -117690894, now seen corresponding path program 1 times [2020-10-14 10:07:00,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:00,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518632808] [2020-10-14 10:07:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 10:07:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 10:07:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:07:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:01,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:01,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:01,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518632808] [2020-10-14 10:07:01,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:01,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:01,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744740438] [2020-10-14 10:07:01,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:01,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:01,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:01,757 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand 5 states. [2020-10-14 10:07:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:02,842 INFO L93 Difference]: Finished difference Result 810 states and 1291 transitions. [2020-10-14 10:07:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:02,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-14 10:07:02,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:02,845 INFO L225 Difference]: With dead ends: 810 [2020-10-14 10:07:02,845 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 10:07:02,846 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 10:07:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 10:07:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 385. [2020-10-14 10:07:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-14 10:07:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 612 transitions. [2020-10-14 10:07:02,858 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 612 transitions. Word has length 84 [2020-10-14 10:07:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:02,859 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 612 transitions. [2020-10-14 10:07:02,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 612 transitions. [2020-10-14 10:07:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 10:07:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:02,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:02,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:07:02,860 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 412901617, now seen corresponding path program 1 times [2020-10-14 10:07:02,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:02,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944568187] [2020-10-14 10:07:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 10:07:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:07:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:03,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:03,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:03,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944568187] [2020-10-14 10:07:03,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:03,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:03,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555339834] [2020-10-14 10:07:03,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:03,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:03,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:03,242 INFO L87 Difference]: Start difference. First operand 385 states and 612 transitions. Second operand 5 states. [2020-10-14 10:07:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:04,135 INFO L93 Difference]: Finished difference Result 801 states and 1253 transitions. [2020-10-14 10:07:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:04,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-14 10:07:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:04,138 INFO L225 Difference]: With dead ends: 801 [2020-10-14 10:07:04,139 INFO L226 Difference]: Without dead ends: 454 [2020-10-14 10:07:04,140 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 10:07:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-14 10:07:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 390. [2020-10-14 10:07:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-14 10:07:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 621 transitions. [2020-10-14 10:07:04,153 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 621 transitions. Word has length 84 [2020-10-14 10:07:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:04,153 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 621 transitions. [2020-10-14 10:07:04,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 621 transitions. [2020-10-14 10:07:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 10:07:04,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:04,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:04,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:07:04,156 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:04,156 INFO L82 PathProgramCache]: Analyzing trace with hash -609722053, now seen corresponding path program 1 times [2020-10-14 10:07:04,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:04,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705292507] [2020-10-14 10:07:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:07:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-14 10:07:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:04,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705292507] [2020-10-14 10:07:04,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:04,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:04,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093749798] [2020-10-14 10:07:04,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:04,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:04,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:04,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:04,478 INFO L87 Difference]: Start difference. First operand 390 states and 621 transitions. Second operand 5 states. [2020-10-14 10:07:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:05,350 INFO L93 Difference]: Finished difference Result 798 states and 1249 transitions. [2020-10-14 10:07:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:05,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-14 10:07:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:05,354 INFO L225 Difference]: With dead ends: 798 [2020-10-14 10:07:05,355 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 10:07:05,356 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 10:07:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 10:07:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 391. [2020-10-14 10:07:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:07:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 622 transitions. [2020-10-14 10:07:05,370 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 622 transitions. Word has length 85 [2020-10-14 10:07:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:05,370 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 622 transitions. [2020-10-14 10:07:05,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 622 transitions. [2020-10-14 10:07:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 10:07:05,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:05,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:05,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:07:05,373 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:05,373 INFO L82 PathProgramCache]: Analyzing trace with hash 917230007, now seen corresponding path program 1 times [2020-10-14 10:07:05,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:05,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578046228] [2020-10-14 10:07:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 10:07:06,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:07:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:07:06,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578046228] [2020-10-14 10:07:06,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:06,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:06,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242066904] [2020-10-14 10:07:06,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:06,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:06,388 INFO L87 Difference]: Start difference. First operand 391 states and 622 transitions. Second operand 5 states. [2020-10-14 10:07:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:07,303 INFO L93 Difference]: Finished difference Result 798 states and 1248 transitions. [2020-10-14 10:07:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:07,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 10:07:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:07,307 INFO L225 Difference]: With dead ends: 798 [2020-10-14 10:07:07,307 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 10:07:07,309 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 10:07:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 10:07:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 391. [2020-10-14 10:07:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:07:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 621 transitions. [2020-10-14 10:07:07,323 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 621 transitions. Word has length 91 [2020-10-14 10:07:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:07,323 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 621 transitions. [2020-10-14 10:07:07,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 621 transitions. [2020-10-14 10:07:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 10:07:07,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:07,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:07,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:07:07,325 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1818670011, now seen corresponding path program 1 times [2020-10-14 10:07:07,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:07,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101633192] [2020-10-14 10:07:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4379 [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:11,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101633192] [2020-10-14 10:07:11,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:11,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:11,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898380943] [2020-10-14 10:07:11,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:11,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:11,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:11,794 INFO L87 Difference]: Start difference. First operand 391 states and 621 transitions. Second operand 5 states. [2020-10-14 10:07:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:12,845 INFO L93 Difference]: Finished difference Result 938 states and 1478 transitions. [2020-10-14 10:07:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:12,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 10:07:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:12,849 INFO L225 Difference]: With dead ends: 938 [2020-10-14 10:07:12,849 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 10:07:12,850 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 10:07:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 10:07:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 455. [2020-10-14 10:07:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-14 10:07:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 737 transitions. [2020-10-14 10:07:12,864 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 737 transitions. Word has length 92 [2020-10-14 10:07:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:12,864 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 737 transitions. [2020-10-14 10:07:12,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 737 transitions. [2020-10-14 10:07:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 10:07:12,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:12,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:12,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:07:12,867 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1214177966, now seen corresponding path program 1 times [2020-10-14 10:07:12,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:12,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640070550] [2020-10-14 10:07:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:07:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:07:13,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640070550] [2020-10-14 10:07:13,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:13,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:13,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166178856] [2020-10-14 10:07:13,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:13,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:13,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:13,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:13,935 INFO L87 Difference]: Start difference. First operand 455 states and 737 transitions. Second operand 5 states. [2020-10-14 10:07:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:14,831 INFO L93 Difference]: Finished difference Result 924 states and 1477 transitions. [2020-10-14 10:07:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:14,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 10:07:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:14,835 INFO L225 Difference]: With dead ends: 924 [2020-10-14 10:07:14,835 INFO L226 Difference]: Without dead ends: 513 [2020-10-14 10:07:14,836 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 10:07:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-14 10:07:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 455. [2020-10-14 10:07:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-14 10:07:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 736 transitions. [2020-10-14 10:07:14,852 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 736 transitions. Word has length 92 [2020-10-14 10:07:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:14,852 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 736 transitions. [2020-10-14 10:07:14,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 736 transitions. [2020-10-14 10:07:14,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 10:07:14,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:14,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:14,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:07:14,854 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1916593351, now seen corresponding path program 1 times [2020-10-14 10:07:14,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:14,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879730388] [2020-10-14 10:07:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:15,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:07:15,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-14 10:07:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:15,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:07:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879730388] [2020-10-14 10:07:15,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:15,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:15,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841676557] [2020-10-14 10:07:15,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:15,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:15,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:15,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:15,490 INFO L87 Difference]: Start difference. First operand 455 states and 736 transitions. Second operand 5 states. [2020-10-14 10:07:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:16,366 INFO L93 Difference]: Finished difference Result 924 states and 1476 transitions. [2020-10-14 10:07:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:16,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 10:07:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:16,369 INFO L225 Difference]: With dead ends: 924 [2020-10-14 10:07:16,369 INFO L226 Difference]: Without dead ends: 513 [2020-10-14 10:07:16,370 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 10:07:16,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-14 10:07:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 458. [2020-10-14 10:07:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-14 10:07:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 739 transitions. [2020-10-14 10:07:16,383 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 739 transitions. Word has length 92 [2020-10-14 10:07:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:16,383 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 739 transitions. [2020-10-14 10:07:16,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 739 transitions. [2020-10-14 10:07:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 10:07:16,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:16,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 10:07:16,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:07:16,385 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:16,386 INFO L82 PathProgramCache]: Analyzing trace with hash -726331727, now seen corresponding path program 1 times [2020-10-14 10:07:16,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:16,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963106300] [2020-10-14 10:07:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:16,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:07:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 10:07:16,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:16,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963106300] [2020-10-14 10:07:16,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:16,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:16,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149655645] [2020-10-14 10:07:16,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:16,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:16,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:16,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:16,734 INFO L87 Difference]: Start difference. First operand 458 states and 739 transitions. Second operand 5 states. [2020-10-14 10:07:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:17,845 INFO L93 Difference]: Finished difference Result 1070 states and 1713 transitions. [2020-10-14 10:07:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:17,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 10:07:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:17,849 INFO L225 Difference]: With dead ends: 1070 [2020-10-14 10:07:17,850 INFO L226 Difference]: Without dead ends: 659 [2020-10-14 10:07:17,850 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 10:07:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-14 10:07:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 459. [2020-10-14 10:07:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-14 10:07:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 740 transitions. [2020-10-14 10:07:17,864 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 740 transitions. Word has length 92 [2020-10-14 10:07:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:17,864 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 740 transitions. [2020-10-14 10:07:17,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 740 transitions. [2020-10-14 10:07:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 10:07:17,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:17,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:17,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:07:17,866 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1232918904, now seen corresponding path program 1 times [2020-10-14 10:07:17,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:17,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911328080] [2020-10-14 10:07:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 10:07:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:07:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:07:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:22,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911328080] [2020-10-14 10:07:22,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:22,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:22,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248497958] [2020-10-14 10:07:22,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:22,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:22,963 INFO L87 Difference]: Start difference. First operand 459 states and 740 transitions. Second operand 5 states. [2020-10-14 10:07:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:23,851 INFO L93 Difference]: Finished difference Result 1191 states and 1923 transitions. [2020-10-14 10:07:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:23,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 10:07:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:23,856 INFO L225 Difference]: With dead ends: 1191 [2020-10-14 10:07:23,857 INFO L226 Difference]: Without dead ends: 779 [2020-10-14 10:07:23,858 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 10:07:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-14 10:07:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 522. [2020-10-14 10:07:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-14 10:07:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 855 transitions. [2020-10-14 10:07:23,871 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 855 transitions. Word has length 93 [2020-10-14 10:07:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:23,871 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 855 transitions. [2020-10-14 10:07:23,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 855 transitions. [2020-10-14 10:07:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 10:07:23,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:23,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:23,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:07:23,874 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1734943825, now seen corresponding path program 1 times [2020-10-14 10:07:23,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:23,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244333340] [2020-10-14 10:07:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 10:07:24,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:07:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:24,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:24,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244333340] [2020-10-14 10:07:24,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:24,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457776586] [2020-10-14 10:07:24,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:24,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:24,562 INFO L87 Difference]: Start difference. First operand 522 states and 855 transitions. Second operand 5 states. [2020-10-14 10:07:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:25,461 INFO L93 Difference]: Finished difference Result 1051 states and 1706 transitions. [2020-10-14 10:07:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:25,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 10:07:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:25,466 INFO L225 Difference]: With dead ends: 1051 [2020-10-14 10:07:25,466 INFO L226 Difference]: Without dead ends: 576 [2020-10-14 10:07:25,467 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 10:07:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-14 10:07:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 523. [2020-10-14 10:07:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-14 10:07:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 856 transitions. [2020-10-14 10:07:25,482 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 856 transitions. Word has length 93 [2020-10-14 10:07:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:25,482 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 856 transitions. [2020-10-14 10:07:25,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 856 transitions. [2020-10-14 10:07:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 10:07:25,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:25,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:25,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:07:25,483 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:25,483 INFO L82 PathProgramCache]: Analyzing trace with hash 545997547, now seen corresponding path program 1 times [2020-10-14 10:07:25,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:25,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019435889] [2020-10-14 10:07:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:25,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:07:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:26,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019435889] [2020-10-14 10:07:26,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:26,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:26,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346637616] [2020-10-14 10:07:26,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:26,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:26,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:26,781 INFO L87 Difference]: Start difference. First operand 523 states and 856 transitions. Second operand 5 states. [2020-10-14 10:07:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:27,650 INFO L93 Difference]: Finished difference Result 1051 states and 1705 transitions. [2020-10-14 10:07:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:27,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 10:07:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:27,655 INFO L225 Difference]: With dead ends: 1051 [2020-10-14 10:07:27,656 INFO L226 Difference]: Without dead ends: 576 [2020-10-14 10:07:27,658 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 10:07:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-14 10:07:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 524. [2020-10-14 10:07:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-14 10:07:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 857 transitions. [2020-10-14 10:07:27,677 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 857 transitions. Word has length 94 [2020-10-14 10:07:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:27,678 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 857 transitions. [2020-10-14 10:07:27,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:27,678 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 857 transitions. [2020-10-14 10:07:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 10:07:27,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:27,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:27,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 10:07:27,680 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash -402804587, now seen corresponding path program 1 times [2020-10-14 10:07:27,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:27,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631599930] [2020-10-14 10:07:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:07:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:28,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631599930] [2020-10-14 10:07:28,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:28,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:28,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225110999] [2020-10-14 10:07:28,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:28,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:28,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:28,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:28,981 INFO L87 Difference]: Start difference. First operand 524 states and 857 transitions. Second operand 5 states. [2020-10-14 10:07:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:29,865 INFO L93 Difference]: Finished difference Result 1046 states and 1699 transitions. [2020-10-14 10:07:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:29,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 10:07:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:29,869 INFO L225 Difference]: With dead ends: 1046 [2020-10-14 10:07:29,869 INFO L226 Difference]: Without dead ends: 563 [2020-10-14 10:07:29,870 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 10:07:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-14 10:07:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 517. [2020-10-14 10:07:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-14 10:07:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 849 transitions. [2020-10-14 10:07:29,888 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 849 transitions. Word has length 95 [2020-10-14 10:07:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:29,889 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 849 transitions. [2020-10-14 10:07:29,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 849 transitions. [2020-10-14 10:07:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 10:07:29,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:29,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:29,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 10:07:29,891 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1186457351, now seen corresponding path program 1 times [2020-10-14 10:07:29,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:29,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684144792] [2020-10-14 10:07:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4046 [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:34,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684144792] [2020-10-14 10:07:34,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:34,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377051440] [2020-10-14 10:07:34,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:34,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:34,022 INFO L87 Difference]: Start difference. First operand 517 states and 849 transitions. Second operand 5 states. [2020-10-14 10:07:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:35,128 INFO L93 Difference]: Finished difference Result 1192 states and 1936 transitions. [2020-10-14 10:07:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:35,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 10:07:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:35,131 INFO L225 Difference]: With dead ends: 1192 [2020-10-14 10:07:35,131 INFO L226 Difference]: Without dead ends: 717 [2020-10-14 10:07:35,132 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 10:07:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-14 10:07:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 591. [2020-10-14 10:07:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-14 10:07:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 983 transitions. [2020-10-14 10:07:35,150 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 983 transitions. Word has length 98 [2020-10-14 10:07:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 983 transitions. [2020-10-14 10:07:35,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 983 transitions. [2020-10-14 10:07:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 10:07:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:35,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:35,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 10:07:35,153 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2103987843, now seen corresponding path program 1 times [2020-10-14 10:07:35,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:35,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102547717] [2020-10-14 10:07:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:35,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:35,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:35,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102547717] [2020-10-14 10:07:35,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:35,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:35,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851988430] [2020-10-14 10:07:35,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:35,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:35,550 INFO L87 Difference]: Start difference. First operand 591 states and 983 transitions. Second operand 5 states. [2020-10-14 10:07:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:36,684 INFO L93 Difference]: Finished difference Result 1341 states and 2205 transitions. [2020-10-14 10:07:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:36,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 10:07:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:36,689 INFO L225 Difference]: With dead ends: 1341 [2020-10-14 10:07:36,689 INFO L226 Difference]: Without dead ends: 792 [2020-10-14 10:07:36,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-14 10:07:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 592. [2020-10-14 10:07:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-14 10:07:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 984 transitions. [2020-10-14 10:07:36,708 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 984 transitions. Word has length 98 [2020-10-14 10:07:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:36,708 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 984 transitions. [2020-10-14 10:07:36,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 984 transitions. [2020-10-14 10:07:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 10:07:36,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:36,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:36,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 10:07:36,710 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:36,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1895669221, now seen corresponding path program 1 times [2020-10-14 10:07:36,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:36,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930625144] [2020-10-14 10:07:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4940 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:41,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930625144] [2020-10-14 10:07:41,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:41,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:41,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290857703] [2020-10-14 10:07:41,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:41,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:41,735 INFO L87 Difference]: Start difference. First operand 592 states and 984 transitions. Second operand 5 states. [2020-10-14 10:07:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:42,730 INFO L93 Difference]: Finished difference Result 1336 states and 2197 transitions. [2020-10-14 10:07:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:42,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 10:07:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:42,735 INFO L225 Difference]: With dead ends: 1336 [2020-10-14 10:07:42,735 INFO L226 Difference]: Without dead ends: 786 [2020-10-14 10:07:42,736 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 10:07:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-10-14 10:07:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 668. [2020-10-14 10:07:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-14 10:07:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1120 transitions. [2020-10-14 10:07:42,756 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1120 transitions. Word has length 99 [2020-10-14 10:07:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:42,756 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 1120 transitions. [2020-10-14 10:07:42,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1120 transitions. [2020-10-14 10:07:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 10:07:42,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:42,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:42,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 10:07:42,759 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:42,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1855212564, now seen corresponding path program 1 times [2020-10-14 10:07:42,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:42,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362966290] [2020-10-14 10:07:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 10:07:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:07:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:47,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:47,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362966290] [2020-10-14 10:07:47,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:47,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:47,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402701634] [2020-10-14 10:07:47,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:47,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:47,870 INFO L87 Difference]: Start difference. First operand 668 states and 1120 transitions. Second operand 5 states. [2020-10-14 10:07:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:48,871 INFO L93 Difference]: Finished difference Result 1592 states and 2648 transitions. [2020-10-14 10:07:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:48,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 10:07:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:48,875 INFO L225 Difference]: With dead ends: 1592 [2020-10-14 10:07:48,875 INFO L226 Difference]: Without dead ends: 966 [2020-10-14 10:07:48,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-14 10:07:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 732. [2020-10-14 10:07:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-14 10:07:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1238 transitions. [2020-10-14 10:07:48,896 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1238 transitions. Word has length 99 [2020-10-14 10:07:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:48,896 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1238 transitions. [2020-10-14 10:07:48,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1238 transitions. [2020-10-14 10:07:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 10:07:48,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:48,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:48,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 10:07:48,898 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1323883985, now seen corresponding path program 1 times [2020-10-14 10:07:48,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:48,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869745183] [2020-10-14 10:07:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:49,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 10:07:49,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:49,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:49,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869745183] [2020-10-14 10:07:49,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:49,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:49,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117807454] [2020-10-14 10:07:49,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:49,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:49,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:49,401 INFO L87 Difference]: Start difference. First operand 732 states and 1238 transitions. Second operand 5 states. [2020-10-14 10:07:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:50,654 INFO L93 Difference]: Finished difference Result 1616 states and 2705 transitions. [2020-10-14 10:07:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:50,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 10:07:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:50,657 INFO L225 Difference]: With dead ends: 1616 [2020-10-14 10:07:50,657 INFO L226 Difference]: Without dead ends: 926 [2020-10-14 10:07:50,659 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 10:07:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-14 10:07:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 732. [2020-10-14 10:07:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-14 10:07:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1238 transitions. [2020-10-14 10:07:50,685 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1238 transitions. Word has length 99 [2020-10-14 10:07:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:50,686 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1238 transitions. [2020-10-14 10:07:50,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1238 transitions. [2020-10-14 10:07:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 10:07:50,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:50,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:50,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 10:07:50,688 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1152244344, now seen corresponding path program 1 times [2020-10-14 10:07:50,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:50,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675943978] [2020-10-14 10:07:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:55,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:07:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:55,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:55,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675943978] [2020-10-14 10:07:55,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:55,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:55,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609974072] [2020-10-14 10:07:55,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:55,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:55,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:55,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:55,785 INFO L87 Difference]: Start difference. First operand 732 states and 1238 transitions. Second operand 5 states. [2020-10-14 10:07:56,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:56,763 INFO L93 Difference]: Finished difference Result 1668 states and 2787 transitions. [2020-10-14 10:07:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:56,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 10:07:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:56,767 INFO L225 Difference]: With dead ends: 1668 [2020-10-14 10:07:56,767 INFO L226 Difference]: Without dead ends: 978 [2020-10-14 10:07:56,768 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 10:07:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-14 10:07:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 732. [2020-10-14 10:07:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-14 10:07:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1240 transitions. [2020-10-14 10:07:56,787 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1240 transitions. Word has length 100 [2020-10-14 10:07:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:56,787 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1240 transitions. [2020-10-14 10:07:56,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1240 transitions. [2020-10-14 10:07:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 10:07:56,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:56,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:56,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 10:07:56,789 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash 27635210, now seen corresponding path program 1 times [2020-10-14 10:07:56,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:56,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296542481] [2020-10-14 10:07:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 10:07:57,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:07:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:07:57,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296542481] [2020-10-14 10:07:57,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:57,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:57,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899190855] [2020-10-14 10:07:57,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:57,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:57,402 INFO L87 Difference]: Start difference. First operand 732 states and 1240 transitions. Second operand 4 states. [2020-10-14 10:07:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:58,417 INFO L93 Difference]: Finished difference Result 1420 states and 2426 transitions. [2020-10-14 10:07:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:58,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 10:07:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:58,421 INFO L225 Difference]: With dead ends: 1420 [2020-10-14 10:07:58,421 INFO L226 Difference]: Without dead ends: 1072 [2020-10-14 10:07:58,422 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 10:07:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-14 10:07:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2020-10-14 10:07:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2020-10-14 10:07:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1812 transitions. [2020-10-14 10:07:58,451 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1812 transitions. Word has length 101 [2020-10-14 10:07:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:58,451 INFO L479 AbstractCegarLoop]: Abstraction has 1072 states and 1812 transitions. [2020-10-14 10:07:58,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1812 transitions. [2020-10-14 10:07:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 10:07:58,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:58,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:58,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 10:07:58,454 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:58,454 INFO L82 PathProgramCache]: Analyzing trace with hash 451281932, now seen corresponding path program 1 times [2020-10-14 10:07:58,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:58,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057989873] [2020-10-14 10:07:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:58,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 10:07:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 10:07:58,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:58,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:07:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:58,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:58,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:58,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:58,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:58,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057989873] [2020-10-14 10:07:58,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:58,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:58,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315310049] [2020-10-14 10:07:58,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:58,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:58,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:58,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:58,813 INFO L87 Difference]: Start difference. First operand 1072 states and 1812 transitions. Second operand 5 states. [2020-10-14 10:07:59,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:59,991 INFO L93 Difference]: Finished difference Result 2393 states and 3996 transitions. [2020-10-14 10:07:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:59,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 10:07:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:59,994 INFO L225 Difference]: With dead ends: 2393 [2020-10-14 10:07:59,994 INFO L226 Difference]: Without dead ends: 1363 [2020-10-14 10:07:59,996 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 10:07:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-14 10:08:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1072. [2020-10-14 10:08:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2020-10-14 10:08:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1812 transitions. [2020-10-14 10:08:00,028 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1812 transitions. Word has length 101 [2020-10-14 10:08:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:00,028 INFO L479 AbstractCegarLoop]: Abstraction has 1072 states and 1812 transitions. [2020-10-14 10:08:00,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1812 transitions. [2020-10-14 10:08:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:08:00,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:00,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:00,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 10:08:00,032 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -821598495, now seen corresponding path program 1 times [2020-10-14 10:08:00,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:00,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489634034] [2020-10-14 10:08:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:01,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:01,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:08:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:01,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:01,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:01,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:01,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:01,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:01,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:01,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489634034] [2020-10-14 10:08:01,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:01,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:01,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986930111] [2020-10-14 10:08:01,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:01,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:01,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:01,453 INFO L87 Difference]: Start difference. First operand 1072 states and 1812 transitions. Second operand 5 states. [2020-10-14 10:08:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:02,306 INFO L93 Difference]: Finished difference Result 3144 states and 5317 transitions. [2020-10-14 10:08:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:02,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:08:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:02,311 INFO L225 Difference]: With dead ends: 3144 [2020-10-14 10:08:02,311 INFO L226 Difference]: Without dead ends: 2114 [2020-10-14 10:08:02,314 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 10:08:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2020-10-14 10:08:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2108. [2020-10-14 10:08:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3543 transitions. [2020-10-14 10:08:02,416 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3543 transitions. Word has length 105 [2020-10-14 10:08:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:02,417 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3543 transitions. [2020-10-14 10:08:02,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3543 transitions. [2020-10-14 10:08:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:08:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:02,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:02,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 10:08:02,421 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash -235322273, now seen corresponding path program 1 times [2020-10-14 10:08:02,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:02,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492433683] [2020-10-14 10:08:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:04,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:04,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:08:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:08:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1569 [2020-10-14 10:08:04,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:04,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:08:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:04,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:04,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492433683] [2020-10-14 10:08:04,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:04,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:04,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719961747] [2020-10-14 10:08:04,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:04,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:04,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:04,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:04,097 INFO L87 Difference]: Start difference. First operand 2108 states and 3543 transitions. Second operand 5 states. [2020-10-14 10:08:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:05,226 INFO L93 Difference]: Finished difference Result 4231 states and 7077 transitions. [2020-10-14 10:08:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:05,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:08:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:05,244 INFO L225 Difference]: With dead ends: 4231 [2020-10-14 10:08:05,245 INFO L226 Difference]: Without dead ends: 2198 [2020-10-14 10:08:05,249 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 10:08:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-10-14 10:08:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2108. [2020-10-14 10:08:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3541 transitions. [2020-10-14 10:08:05,348 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3541 transitions. Word has length 105 [2020-10-14 10:08:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:05,348 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3541 transitions. [2020-10-14 10:08:05,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3541 transitions. [2020-10-14 10:08:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:08:05,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:05,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:05,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 10:08:05,353 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1565382669, now seen corresponding path program 1 times [2020-10-14 10:08:05,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:05,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164911261] [2020-10-14 10:08:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:06,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:08:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:06,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:06,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:06,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:06,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164911261] [2020-10-14 10:08:06,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:06,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:06,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859955084] [2020-10-14 10:08:06,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:06,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:06,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:06,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:06,907 INFO L87 Difference]: Start difference. First operand 2108 states and 3541 transitions. Second operand 5 states. [2020-10-14 10:08:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:07,883 INFO L93 Difference]: Finished difference Result 4231 states and 7075 transitions. [2020-10-14 10:08:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:07,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:08:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:07,889 INFO L225 Difference]: With dead ends: 4231 [2020-10-14 10:08:07,889 INFO L226 Difference]: Without dead ends: 2198 [2020-10-14 10:08:07,893 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 10:08:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-10-14 10:08:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2108. [2020-10-14 10:08:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3539 transitions. [2020-10-14 10:08:07,969 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3539 transitions. Word has length 105 [2020-10-14 10:08:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:07,969 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3539 transitions. [2020-10-14 10:08:07,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3539 transitions. [2020-10-14 10:08:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:08:07,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:07,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:07,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 10:08:07,973 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:07,974 INFO L82 PathProgramCache]: Analyzing trace with hash -864654246, now seen corresponding path program 1 times [2020-10-14 10:08:07,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:07,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117607610] [2020-10-14 10:08:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:09,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:08:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:09,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117607610] [2020-10-14 10:08:09,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:09,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:09,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044054187] [2020-10-14 10:08:09,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:09,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:09,677 INFO L87 Difference]: Start difference. First operand 2108 states and 3539 transitions. Second operand 5 states. [2020-10-14 10:08:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:10,683 INFO L93 Difference]: Finished difference Result 4231 states and 7073 transitions. [2020-10-14 10:08:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:10,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:08:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:10,689 INFO L225 Difference]: With dead ends: 4231 [2020-10-14 10:08:10,689 INFO L226 Difference]: Without dead ends: 2198 [2020-10-14 10:08:10,693 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 10:08:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-10-14 10:08:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2108. [2020-10-14 10:08:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3537 transitions. [2020-10-14 10:08:10,760 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3537 transitions. Word has length 105 [2020-10-14 10:08:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:10,760 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3537 transitions. [2020-10-14 10:08:10,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3537 transitions. [2020-10-14 10:08:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:08:10,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:10,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:10,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 10:08:10,764 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:10,764 INFO L82 PathProgramCache]: Analyzing trace with hash -646247509, now seen corresponding path program 1 times [2020-10-14 10:08:10,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:10,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600170683] [2020-10-14 10:08:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:08:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:13,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:13,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:13,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600170683] [2020-10-14 10:08:13,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:13,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:13,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723649818] [2020-10-14 10:08:13,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:13,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:13,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:13,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:13,031 INFO L87 Difference]: Start difference. First operand 2108 states and 3537 transitions. Second operand 5 states. [2020-10-14 10:08:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:14,031 INFO L93 Difference]: Finished difference Result 4229 states and 7069 transitions. [2020-10-14 10:08:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:14,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:08:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:14,034 INFO L225 Difference]: With dead ends: 4229 [2020-10-14 10:08:14,035 INFO L226 Difference]: Without dead ends: 2196 [2020-10-14 10:08:14,037 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 10:08:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2020-10-14 10:08:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2108. [2020-10-14 10:08:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3535 transitions. [2020-10-14 10:08:14,093 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3535 transitions. Word has length 105 [2020-10-14 10:08:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:14,093 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3535 transitions. [2020-10-14 10:08:14,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3535 transitions. [2020-10-14 10:08:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:08:14,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:14,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:14,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 10:08:14,097 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2058505998, now seen corresponding path program 1 times [2020-10-14 10:08:14,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:14,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431438366] [2020-10-14 10:08:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:08:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:16,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:16,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:16,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431438366] [2020-10-14 10:08:16,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:16,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:16,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249512030] [2020-10-14 10:08:16,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:16,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:16,587 INFO L87 Difference]: Start difference. First operand 2108 states and 3535 transitions. Second operand 5 states. [2020-10-14 10:08:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:17,558 INFO L93 Difference]: Finished difference Result 4229 states and 7067 transitions. [2020-10-14 10:08:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:17,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:08:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:17,561 INFO L225 Difference]: With dead ends: 4229 [2020-10-14 10:08:17,561 INFO L226 Difference]: Without dead ends: 2196 [2020-10-14 10:08:17,564 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 10:08:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2020-10-14 10:08:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2108. [2020-10-14 10:08:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-10-14 10:08:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3533 transitions. [2020-10-14 10:08:17,625 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3533 transitions. Word has length 106 [2020-10-14 10:08:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:17,625 INFO L479 AbstractCegarLoop]: Abstraction has 2108 states and 3533 transitions. [2020-10-14 10:08:17,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3533 transitions. [2020-10-14 10:08:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:08:17,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:17,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:17,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 10:08:17,628 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1885537044, now seen corresponding path program 1 times [2020-10-14 10:08:17,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:17,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332703648] [2020-10-14 10:08:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:08:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:08:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:18,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:18,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332703648] [2020-10-14 10:08:18,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:18,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137457650] [2020-10-14 10:08:18,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:18,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:18,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:18,723 INFO L87 Difference]: Start difference. First operand 2108 states and 3533 transitions. Second operand 5 states. [2020-10-14 10:08:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,046 INFO L93 Difference]: Finished difference Result 4726 states and 7824 transitions. [2020-10-14 10:08:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:20,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:08:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,050 INFO L225 Difference]: With dead ends: 4726 [2020-10-14 10:08:20,050 INFO L226 Difference]: Without dead ends: 2693 [2020-10-14 10:08:20,053 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 10:08:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2020-10-14 10:08:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2112. [2020-10-14 10:08:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-10-14 10:08:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3537 transitions. [2020-10-14 10:08:20,131 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3537 transitions. Word has length 106 [2020-10-14 10:08:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:20,132 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 3537 transitions. [2020-10-14 10:08:20,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3537 transitions. [2020-10-14 10:08:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:08:20,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:20,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:20,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 10:08:20,137 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 332093354, now seen corresponding path program 1 times [2020-10-14 10:08:20,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:20,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527513323] [2020-10-14 10:08:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:23,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:08:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:23,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527513323] [2020-10-14 10:08:23,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:23,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:23,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905393931] [2020-10-14 10:08:23,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:23,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:23,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:23,081 INFO L87 Difference]: Start difference. First operand 2112 states and 3537 transitions. Second operand 5 states. [2020-10-14 10:08:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:24,425 INFO L93 Difference]: Finished difference Result 4728 states and 7826 transitions. [2020-10-14 10:08:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:24,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:08:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:24,429 INFO L225 Difference]: With dead ends: 4728 [2020-10-14 10:08:24,429 INFO L226 Difference]: Without dead ends: 2691 [2020-10-14 10:08:24,432 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 10:08:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-10-14 10:08:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2106. [2020-10-14 10:08:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-14 10:08:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3531 transitions. [2020-10-14 10:08:24,510 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3531 transitions. Word has length 106 [2020-10-14 10:08:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:24,510 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 3531 transitions. [2020-10-14 10:08:24,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3531 transitions. [2020-10-14 10:08:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:08:24,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:24,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:24,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 10:08:24,514 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1624332768, now seen corresponding path program 1 times [2020-10-14 10:08:24,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:24,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201656728] [2020-10-14 10:08:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:26,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:08:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:26,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201656728] [2020-10-14 10:08:26,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:26,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:26,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069961286] [2020-10-14 10:08:26,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:26,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:26,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:26,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:26,405 INFO L87 Difference]: Start difference. First operand 2106 states and 3531 transitions. Second operand 5 states. [2020-10-14 10:08:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:27,656 INFO L93 Difference]: Finished difference Result 4716 states and 7814 transitions. [2020-10-14 10:08:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:27,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:08:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:27,661 INFO L225 Difference]: With dead ends: 4716 [2020-10-14 10:08:27,661 INFO L226 Difference]: Without dead ends: 2685 [2020-10-14 10:08:27,664 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 10:08:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-10-14 10:08:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2106. [2020-10-14 10:08:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-14 10:08:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3531 transitions. [2020-10-14 10:08:27,742 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3531 transitions. Word has length 106 [2020-10-14 10:08:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:27,742 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 3531 transitions. [2020-10-14 10:08:27,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3531 transitions. [2020-10-14 10:08:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:08:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:27,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:27,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 10:08:27,746 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1343963413, now seen corresponding path program 1 times [2020-10-14 10:08:27,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:27,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113780778] [2020-10-14 10:08:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:29,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:08:29,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:29,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-14 10:08:29,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:29,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:08:29,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:29,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113780778] [2020-10-14 10:08:29,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:29,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:29,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517634150] [2020-10-14 10:08:29,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:29,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:29,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:29,551 INFO L87 Difference]: Start difference. First operand 2106 states and 3531 transitions. Second operand 5 states. [2020-10-14 10:08:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:30,559 INFO L93 Difference]: Finished difference Result 4221 states and 7057 transitions. [2020-10-14 10:08:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:30,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:08:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:30,562 INFO L225 Difference]: With dead ends: 4221 [2020-10-14 10:08:30,563 INFO L226 Difference]: Without dead ends: 2190 [2020-10-14 10:08:30,565 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 10:08:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-10-14 10:08:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2106. [2020-10-14 10:08:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-14 10:08:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3529 transitions. [2020-10-14 10:08:30,625 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3529 transitions. Word has length 106 [2020-10-14 10:08:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:30,625 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 3529 transitions. [2020-10-14 10:08:30,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3529 transitions. [2020-10-14 10:08:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:08:30,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:30,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:30,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 10:08:30,628 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:30,628 INFO L82 PathProgramCache]: Analyzing trace with hash 803071064, now seen corresponding path program 1 times [2020-10-14 10:08:30,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:30,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396738768] [2020-10-14 10:08:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:08:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3161 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:08:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:33,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:33,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:33,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:33,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:33,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:33,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396738768] [2020-10-14 10:08:33,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:33,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:33,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226818035] [2020-10-14 10:08:33,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:33,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:33,884 INFO L87 Difference]: Start difference. First operand 2106 states and 3529 transitions. Second operand 5 states. [2020-10-14 10:08:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:34,887 INFO L93 Difference]: Finished difference Result 4221 states and 7055 transitions. [2020-10-14 10:08:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:34,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 10:08:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:34,890 INFO L225 Difference]: With dead ends: 4221 [2020-10-14 10:08:34,890 INFO L226 Difference]: Without dead ends: 2190 [2020-10-14 10:08:34,893 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 10:08:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-10-14 10:08:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2106. [2020-10-14 10:08:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-14 10:08:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3527 transitions. [2020-10-14 10:08:34,941 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3527 transitions. Word has length 107 [2020-10-14 10:08:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:34,942 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 3527 transitions. [2020-10-14 10:08:34,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3527 transitions. [2020-10-14 10:08:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:08:34,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:34,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:34,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 10:08:34,944 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1848698921, now seen corresponding path program 1 times [2020-10-14 10:08:34,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:34,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196539897] [2020-10-14 10:08:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:36,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:36,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:08:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:08:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:36,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:36,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:36,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196539897] [2020-10-14 10:08:36,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:36,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:08:36,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523509267] [2020-10-14 10:08:36,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:36,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:36,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:36,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:36,072 INFO L87 Difference]: Start difference. First operand 2106 states and 3527 transitions. Second operand 4 states. [2020-10-14 10:08:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:36,784 INFO L93 Difference]: Finished difference Result 4143 states and 6983 transitions. [2020-10-14 10:08:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:36,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-14 10:08:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:36,788 INFO L225 Difference]: With dead ends: 4143 [2020-10-14 10:08:36,789 INFO L226 Difference]: Without dead ends: 2785 [2020-10-14 10:08:36,791 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 10:08:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2020-10-14 10:08:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2775. [2020-10-14 10:08:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 10:08:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4649 transitions. [2020-10-14 10:08:36,851 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4649 transitions. Word has length 107 [2020-10-14 10:08:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:36,851 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 4649 transitions. [2020-10-14 10:08:36,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4649 transitions. [2020-10-14 10:08:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 10:08:36,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:36,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:36,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 10:08:36,855 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:36,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:36,855 INFO L82 PathProgramCache]: Analyzing trace with hash 345279036, now seen corresponding path program 1 times [2020-10-14 10:08:36,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:36,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231910123] [2020-10-14 10:08:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:08:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:38,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:08:38,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:38,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:08:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:38,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231910123] [2020-10-14 10:08:38,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:38,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:38,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364421731] [2020-10-14 10:08:38,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:38,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:38,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:38,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:38,315 INFO L87 Difference]: Start difference. First operand 2775 states and 4649 transitions. Second operand 5 states. [2020-10-14 10:08:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:39,547 INFO L93 Difference]: Finished difference Result 6247 states and 10332 transitions. [2020-10-14 10:08:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:39,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 10:08:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:39,553 INFO L225 Difference]: With dead ends: 6247 [2020-10-14 10:08:39,554 INFO L226 Difference]: Without dead ends: 3547 [2020-10-14 10:08:39,558 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 10:08:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2020-10-14 10:08:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2899. [2020-10-14 10:08:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-10-14 10:08:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4845 transitions. [2020-10-14 10:08:39,622 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4845 transitions. Word has length 108 [2020-10-14 10:08:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:39,622 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 4845 transitions. [2020-10-14 10:08:39,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4845 transitions. [2020-10-14 10:08:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 10:08:39,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:39,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:39,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 10:08:39,626 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:39,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1387540141, now seen corresponding path program 1 times [2020-10-14 10:08:39,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:39,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328260724] [2020-10-14 10:08:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:42,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:42,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 10:08:42,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-14 10:08:42,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:42,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:08:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:42,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:42,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:08:42,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328260724] [2020-10-14 10:08:42,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:42,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:42,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011984894] [2020-10-14 10:08:42,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:42,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:42,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:42,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:42,737 INFO L87 Difference]: Start difference. First operand 2899 states and 4845 transitions. Second operand 5 states. [2020-10-14 10:08:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:43,700 INFO L93 Difference]: Finished difference Result 5787 states and 9664 transitions. [2020-10-14 10:08:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:43,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 10:08:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:43,704 INFO L225 Difference]: With dead ends: 5787 [2020-10-14 10:08:43,704 INFO L226 Difference]: Without dead ends: 2963 [2020-10-14 10:08:43,708 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 10:08:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-10-14 10:08:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2899. [2020-10-14 10:08:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-10-14 10:08:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4843 transitions. [2020-10-14 10:08:43,809 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4843 transitions. Word has length 108 [2020-10-14 10:08:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:43,809 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 4843 transitions. [2020-10-14 10:08:43,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4843 transitions. [2020-10-14 10:08:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 10:08:43,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:43,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:43,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 10:08:43,814 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:43,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1764788883, now seen corresponding path program 1 times [2020-10-14 10:08:43,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:43,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491509822] [2020-10-14 10:08:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:45,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:45,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 10:08:45,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1650 [2020-10-14 10:08:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:45,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:08:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:08:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:45,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:45,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491509822] [2020-10-14 10:08:45,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:45,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:45,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559889363] [2020-10-14 10:08:45,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:45,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:45,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:45,565 INFO L87 Difference]: Start difference. First operand 2899 states and 4843 transitions. Second operand 5 states. [2020-10-14 10:08:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:46,728 INFO L93 Difference]: Finished difference Result 6355 states and 10502 transitions. [2020-10-14 10:08:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:46,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 10:08:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:46,732 INFO L225 Difference]: With dead ends: 6355 [2020-10-14 10:08:46,732 INFO L226 Difference]: Without dead ends: 3531 [2020-10-14 10:08:46,736 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 10:08:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-14 10:08:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 2907. [2020-10-14 10:08:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2907 states. [2020-10-14 10:08:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 4851 transitions. [2020-10-14 10:08:46,800 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 4851 transitions. Word has length 109 [2020-10-14 10:08:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:46,800 INFO L479 AbstractCegarLoop]: Abstraction has 2907 states and 4851 transitions. [2020-10-14 10:08:46,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 4851 transitions. [2020-10-14 10:08:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 10:08:46,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:46,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:46,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 10:08:46,804 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:46,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1365982434, now seen corresponding path program 1 times [2020-10-14 10:08:46,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:46,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338350831] [2020-10-14 10:08:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-14 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:47,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:08:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:08:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:47,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:47,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:47,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338350831] [2020-10-14 10:08:47,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:47,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:47,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82979998] [2020-10-14 10:08:47,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:47,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:47,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:47,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:47,418 INFO L87 Difference]: Start difference. First operand 2907 states and 4851 transitions. Second operand 5 states. [2020-10-14 10:08:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:48,574 INFO L93 Difference]: Finished difference Result 6363 states and 10502 transitions. [2020-10-14 10:08:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:48,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 10:08:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:48,578 INFO L225 Difference]: With dead ends: 6363 [2020-10-14 10:08:48,578 INFO L226 Difference]: Without dead ends: 3531 [2020-10-14 10:08:48,582 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 10:08:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-14 10:08:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3099. [2020-10-14 10:08:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3099 states. [2020-10-14 10:08:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5187 transitions. [2020-10-14 10:08:48,650 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5187 transitions. Word has length 109 [2020-10-14 10:08:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:48,650 INFO L479 AbstractCegarLoop]: Abstraction has 3099 states and 5187 transitions. [2020-10-14 10:08:48,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5187 transitions. [2020-10-14 10:08:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 10:08:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:48,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:48,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 10:08:48,653 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1095500963, now seen corresponding path program 1 times [2020-10-14 10:08:48,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:48,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675433115] [2020-10-14 10:08:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:51,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:51,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 10:08:51,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2492 [2020-10-14 10:08:51,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:51,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:08:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:51,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:51,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675433115] [2020-10-14 10:08:51,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:51,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:51,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336444351] [2020-10-14 10:08:51,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:51,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:51,254 INFO L87 Difference]: Start difference. First operand 3099 states and 5187 transitions. Second operand 5 states. [2020-10-14 10:08:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:52,238 INFO L93 Difference]: Finished difference Result 6187 states and 10350 transitions. [2020-10-14 10:08:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:52,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 10:08:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:52,243 INFO L225 Difference]: With dead ends: 6187 [2020-10-14 10:08:52,243 INFO L226 Difference]: Without dead ends: 3163 [2020-10-14 10:08:52,246 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 10:08:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2020-10-14 10:08:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3099. [2020-10-14 10:08:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3099 states. [2020-10-14 10:08:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5185 transitions. [2020-10-14 10:08:52,313 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5185 transitions. Word has length 109 [2020-10-14 10:08:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:52,313 INFO L479 AbstractCegarLoop]: Abstraction has 3099 states and 5185 transitions. [2020-10-14 10:08:52,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5185 transitions. [2020-10-14 10:08:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:08:52,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:52,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:52,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 10:08:52,316 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1845874582, now seen corresponding path program 1 times [2020-10-14 10:08:52,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:52,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969701471] [2020-10-14 10:08:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:52,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:52,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:08:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-14 10:08:52,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:52,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:08:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:08:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:52,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:53,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:53,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:53,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:53,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969701471] [2020-10-14 10:08:53,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:53,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:53,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326666768] [2020-10-14 10:08:53,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:53,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:53,017 INFO L87 Difference]: Start difference. First operand 3099 states and 5185 transitions. Second operand 5 states. [2020-10-14 10:08:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:54,178 INFO L93 Difference]: Finished difference Result 6547 states and 10820 transitions. [2020-10-14 10:08:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:54,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 10:08:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:54,183 INFO L225 Difference]: With dead ends: 6547 [2020-10-14 10:08:54,183 INFO L226 Difference]: Without dead ends: 3523 [2020-10-14 10:08:54,186 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 10:08:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2020-10-14 10:08:54,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 3107. [2020-10-14 10:08:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-14 10:08:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5193 transitions. [2020-10-14 10:08:54,251 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5193 transitions. Word has length 110 [2020-10-14 10:08:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:54,251 INFO L479 AbstractCegarLoop]: Abstraction has 3107 states and 5193 transitions. [2020-10-14 10:08:54,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5193 transitions. [2020-10-14 10:08:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:08:54,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:54,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:08:54,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 10:08:54,255 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:54,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:54,255 INFO L82 PathProgramCache]: Analyzing trace with hash 960446968, now seen corresponding path program 1 times [2020-10-14 10:08:54,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:54,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826030060] [2020-10-14 10:08:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:08:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:56,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:08:56,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826030060] [2020-10-14 10:08:56,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:56,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:56,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406237635] [2020-10-14 10:08:56,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:56,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:56,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:56,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:56,762 INFO L87 Difference]: Start difference. First operand 3107 states and 5193 transitions. Second operand 5 states. [2020-10-14 10:08:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:57,678 INFO L93 Difference]: Finished difference Result 6187 states and 10338 transitions. [2020-10-14 10:08:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:57,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 10:08:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:57,682 INFO L225 Difference]: With dead ends: 6187 [2020-10-14 10:08:57,682 INFO L226 Difference]: Without dead ends: 3155 [2020-10-14 10:08:57,686 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 10:08:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2020-10-14 10:08:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 3107. [2020-10-14 10:08:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-14 10:08:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5191 transitions. [2020-10-14 10:08:57,751 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5191 transitions. Word has length 110 [2020-10-14 10:08:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:57,751 INFO L479 AbstractCegarLoop]: Abstraction has 3107 states and 5191 transitions. [2020-10-14 10:08:57,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5191 transitions. [2020-10-14 10:08:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:08:57,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:57,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:57,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 10:08:57,755 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash -310116282, now seen corresponding path program 1 times [2020-10-14 10:08:57,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:57,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687276924] [2020-10-14 10:08:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:00,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2249 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:09:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:09:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:09:00,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687276924] [2020-10-14 10:09:00,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:00,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:00,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005322457] [2020-10-14 10:09:00,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:00,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:00,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:00,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:00,086 INFO L87 Difference]: Start difference. First operand 3107 states and 5191 transitions. Second operand 5 states. [2020-10-14 10:09:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:01,175 INFO L93 Difference]: Finished difference Result 6555 states and 10818 transitions. [2020-10-14 10:09:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:01,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 10:09:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:01,179 INFO L225 Difference]: With dead ends: 6555 [2020-10-14 10:09:01,180 INFO L226 Difference]: Without dead ends: 3523 [2020-10-14 10:09:01,184 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 10:09:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2020-10-14 10:09:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 3115. [2020-10-14 10:09:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3115 states. [2020-10-14 10:09:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5199 transitions. [2020-10-14 10:09:01,255 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5199 transitions. Word has length 111 [2020-10-14 10:09:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:01,255 INFO L479 AbstractCegarLoop]: Abstraction has 3115 states and 5199 transitions. [2020-10-14 10:09:01,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5199 transitions. [2020-10-14 10:09:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 10:09:01,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:01,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:01,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 10:09:01,259 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:01,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1172529510, now seen corresponding path program 1 times [2020-10-14 10:09:01,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:01,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639603755] [2020-10-14 10:09:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:03,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:09:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:09:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:03,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:09:03,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639603755] [2020-10-14 10:09:03,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:03,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297134259] [2020-10-14 10:09:03,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:03,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:03,707 INFO L87 Difference]: Start difference. First operand 3115 states and 5199 transitions. Second operand 5 states. [2020-10-14 10:09:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:04,799 INFO L93 Difference]: Finished difference Result 6523 states and 10772 transitions. [2020-10-14 10:09:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:04,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 10:09:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:04,804 INFO L225 Difference]: With dead ends: 6523 [2020-10-14 10:09:04,804 INFO L226 Difference]: Without dead ends: 3419 [2020-10-14 10:09:04,808 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 10:09:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-10-14 10:09:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3049. [2020-10-14 10:09:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2020-10-14 10:09:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 5119 transitions. [2020-10-14 10:09:04,870 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 5119 transitions. Word has length 112 [2020-10-14 10:09:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:04,871 INFO L479 AbstractCegarLoop]: Abstraction has 3049 states and 5119 transitions. [2020-10-14 10:09:04,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 5119 transitions. [2020-10-14 10:09:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 10:09:04,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:04,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:04,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 10:09:04,875 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1600032853, now seen corresponding path program 1 times [2020-10-14 10:09:04,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573434119] [2020-10-14 10:09:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:09:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:09:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:09:09,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573434119] [2020-10-14 10:09:09,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:09,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:09,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893177219] [2020-10-14 10:09:09,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:09,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:09,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:09,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:09,598 INFO L87 Difference]: Start difference. First operand 3049 states and 5119 transitions. Second operand 5 states. [2020-10-14 10:09:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:10,908 INFO L93 Difference]: Finished difference Result 6805 states and 11302 transitions. [2020-10-14 10:09:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:10,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 10:09:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:10,913 INFO L225 Difference]: With dead ends: 6805 [2020-10-14 10:09:10,913 INFO L226 Difference]: Without dead ends: 3821 [2020-10-14 10:09:10,918 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 10:09:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2020-10-14 10:09:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3049. [2020-10-14 10:09:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2020-10-14 10:09:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 5119 transitions. [2020-10-14 10:09:10,998 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 5119 transitions. Word has length 112 [2020-10-14 10:09:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:10,998 INFO L479 AbstractCegarLoop]: Abstraction has 3049 states and 5119 transitions. [2020-10-14 10:09:10,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 5119 transitions. [2020-10-14 10:09:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 10:09:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:11,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:11,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 10:09:11,002 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 262002012, now seen corresponding path program 1 times [2020-10-14 10:09:11,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:11,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281948187] [2020-10-14 10:09:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 10:09:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:09:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:09:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:16,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:09:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:09:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:09:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:16,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:09:16,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281948187] [2020-10-14 10:09:16,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:16,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:16,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518875520] [2020-10-14 10:09:16,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:16,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:16,090 INFO L87 Difference]: Start difference. First operand 3049 states and 5119 transitions. Second operand 5 states.