/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.12.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:40:49,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:40:49,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:40:49,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:40:49,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:40:49,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:40:49,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:40:49,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:40:49,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:40:49,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:40:49,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:40:49,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:40:49,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:40:49,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:40:49,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:40:49,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:40:49,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:40:49,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:40:49,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:40:49,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:40:49,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:40:49,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:40:49,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:40:49,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:40:49,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:40:49,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:40:49,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:40:49,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:40:49,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:40:49,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:40:49,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:40:49,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:40:49,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:40:49,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:40:49,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:40:49,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:40:49,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:40:49,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:40:49,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:40:49,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:40:49,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:40:49,702 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 [2020-10-15 04:40:49,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:40:49,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:40:49,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:40:49,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:40:49,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:40:49,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:40:49,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:40:49,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:40:49,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:40:49,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:40:49,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:40:49,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:40:49,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:40:49,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:40:49,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:40:49,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:40:49,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:40:49,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:40:49,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:40:49,770 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:40:50,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:40:50,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:40:50,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:40:50,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:40:50,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:40:50,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-1.c [2020-10-15 04:40:50,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddce1d0b1/3373b90c0bba4e3281fe3317beb8f049/FLAG7db956f93 [2020-10-15 04:40:50,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:40:50,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.12.i.cil-1.c [2020-10-15 04:40:50,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddce1d0b1/3373b90c0bba4e3281fe3317beb8f049/FLAG7db956f93 [2020-10-15 04:40:51,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddce1d0b1/3373b90c0bba4e3281fe3317beb8f049 [2020-10-15 04:40:51,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:40:51,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:40:51,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:51,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:40:51,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:40:51,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:51,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4952973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51, skipping insertion in model container [2020-10-15 04:40:51,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:51,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:40:51,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:40:51,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:51,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:40:51,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:51,908 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:40:51,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51 WrapperNode [2020-10-15 04:40:51,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:51,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:40:51,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:40:51,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:40:51,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:51,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:51,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:51,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:52,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:52,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:52,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (1/1) ... [2020-10-15 04:40:52,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:40:52,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:40:52,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:40:52,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:40:52,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (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 [2020-10-15 04:40:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:40:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:40:52,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:40:52,169 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:40:52,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:40:52,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:40:52,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:40:52,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:40:52,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:40:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:40:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:40:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:40:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:40:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:40:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:40:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:40:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:40:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:40:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:40:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:40:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:40:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:40:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:40:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:40:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:40:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:40:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:40:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:40:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:40:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:40:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:40:52,755 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:40:53,557 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:40:53,557 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:40:53,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:40:53,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:40:53,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:53 BoogieIcfgContainer [2020-10-15 04:40:53,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:40:53,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:40:53,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:40:53,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:40:53,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:40:51" (1/3) ... [2020-10-15 04:40:53,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5568e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:53, skipping insertion in model container [2020-10-15 04:40:53,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:51" (2/3) ... [2020-10-15 04:40:53,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5568e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:53, skipping insertion in model container [2020-10-15 04:40:53,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:53" (3/3) ... [2020-10-15 04:40:53,595 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-1.c [2020-10-15 04:40:53,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:40:53,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:40:53,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:40:53,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:40:53,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:40:53,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:40:53,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:40:53,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:40:53,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:40:53,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:40:53,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:40:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-15 04:40:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 04:40:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:53,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:53,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:53,692 INFO L82 PathProgramCache]: Analyzing trace with hash -706751833, now seen corresponding path program 1 times [2020-10-15 04:40:53,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:53,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638452269] [2020-10-15 04:40:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 04:40:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-15 04:40:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:40:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:40:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:40:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:54,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:54,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:54,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:54,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:54,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:54,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638452269] [2020-10-15 04:40:54,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:54,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:54,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821984351] [2020-10-15 04:40:54,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:54,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:55,001 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 5 states. [2020-10-15 04:40:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:56,456 INFO L93 Difference]: Finished difference Result 413 states and 698 transitions. [2020-10-15 04:40:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:56,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-15 04:40:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:56,477 INFO L225 Difference]: With dead ends: 413 [2020-10-15 04:40:56,477 INFO L226 Difference]: Without dead ends: 242 [2020-10-15 04:40:56,482 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 [2020-10-15 04:40:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-15 04:40:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 174. [2020-10-15 04:40:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-15 04:40:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 276 transitions. [2020-10-15 04:40:56,545 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 276 transitions. Word has length 47 [2020-10-15 04:40:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:56,546 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 276 transitions. [2020-10-15 04:40:56,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 276 transitions. [2020-10-15 04:40:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 04:40:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:56,549 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] [2020-10-15 04:40:56,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:40:56,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -442224011, now seen corresponding path program 1 times [2020-10-15 04:40:56,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:56,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596003120] [2020-10-15 04:40:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:57,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 04:40:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-15 04:40:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:40:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:40:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:57,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:40:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:57,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:57,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596003120] [2020-10-15 04:40:57,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:57,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:57,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852507136] [2020-10-15 04:40:57,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:57,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:57,386 INFO L87 Difference]: Start difference. First operand 174 states and 276 transitions. Second operand 5 states. [2020-10-15 04:40:58,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:58,307 INFO L93 Difference]: Finished difference Result 365 states and 563 transitions. [2020-10-15 04:40:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:58,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-15 04:40:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:58,313 INFO L225 Difference]: With dead ends: 365 [2020-10-15 04:40:58,313 INFO L226 Difference]: Without dead ends: 236 [2020-10-15 04:40:58,317 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 [2020-10-15 04:40:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-15 04:40:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 175. [2020-10-15 04:40:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-15 04:40:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 277 transitions. [2020-10-15 04:40:58,354 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 277 transitions. Word has length 48 [2020-10-15 04:40:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:58,355 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 277 transitions. [2020-10-15 04:40:58,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 277 transitions. [2020-10-15 04:40:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 04:40:58,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:58,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:58,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:40:58,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1624282001, now seen corresponding path program 1 times [2020-10-15 04:40:58,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:58,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174725986] [2020-10-15 04:40:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:58,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 04:40:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-15 04:40:59,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:40:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:40:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:59,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:59,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:59,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:40:59,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:59,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:40:59,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174725986] [2020-10-15 04:40:59,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:59,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:59,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679903750] [2020-10-15 04:40:59,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:59,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:59,732 INFO L87 Difference]: Start difference. First operand 175 states and 277 transitions. Second operand 5 states. [2020-10-15 04:41:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:00,994 INFO L93 Difference]: Finished difference Result 377 states and 592 transitions. [2020-10-15 04:41:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:00,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-15 04:41:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:00,999 INFO L225 Difference]: With dead ends: 377 [2020-10-15 04:41:00,999 INFO L226 Difference]: Without dead ends: 248 [2020-10-15 04:41:01,002 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 [2020-10-15 04:41:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-15 04:41:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 207. [2020-10-15 04:41:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-15 04:41:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 335 transitions. [2020-10-15 04:41:01,034 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 335 transitions. Word has length 60 [2020-10-15 04:41:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:01,035 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 335 transitions. [2020-10-15 04:41:01,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 335 transitions. [2020-10-15 04:41:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:41:01,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:01,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:01,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:41:01,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:01,044 INFO L82 PathProgramCache]: Analyzing trace with hash -621446413, now seen corresponding path program 1 times [2020-10-15 04:41:01,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:01,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033198292] [2020-10-15 04:41:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:05,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 04:41:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4333 [2020-10-15 04:41:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:05,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:41:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:05,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:05,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033198292] [2020-10-15 04:41:05,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:05,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:05,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377687995] [2020-10-15 04:41:05,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:05,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:05,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:05,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:05,562 INFO L87 Difference]: Start difference. First operand 207 states and 335 transitions. Second operand 5 states. [2020-10-15 04:41:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:06,707 INFO L93 Difference]: Finished difference Result 475 states and 760 transitions. [2020-10-15 04:41:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:06,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:41:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:06,710 INFO L225 Difference]: With dead ends: 475 [2020-10-15 04:41:06,710 INFO L226 Difference]: Without dead ends: 314 [2020-10-15 04:41:06,713 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 [2020-10-15 04:41:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-15 04:41:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 246. [2020-10-15 04:41:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-15 04:41:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 407 transitions. [2020-10-15 04:41:06,734 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 407 transitions. Word has length 61 [2020-10-15 04:41:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:06,735 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 407 transitions. [2020-10-15 04:41:06,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 407 transitions. [2020-10-15 04:41:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:41:06,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:06,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:06,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:41:06,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:06,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1302603453, now seen corresponding path program 1 times [2020-10-15 04:41:06,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:06,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755056188] [2020-10-15 04:41:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 04:41:07,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-15 04:41:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:07,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:07,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:07,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:07,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:07,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:07,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:07,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:07,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:07,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755056188] [2020-10-15 04:41:07,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:07,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:07,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973948845] [2020-10-15 04:41:07,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:07,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:07,220 INFO L87 Difference]: Start difference. First operand 246 states and 407 transitions. Second operand 5 states. [2020-10-15 04:41:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:08,363 INFO L93 Difference]: Finished difference Result 554 states and 905 transitions. [2020-10-15 04:41:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:08,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:41:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:08,367 INFO L225 Difference]: With dead ends: 554 [2020-10-15 04:41:08,367 INFO L226 Difference]: Without dead ends: 354 [2020-10-15 04:41:08,368 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 [2020-10-15 04:41:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-15 04:41:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 247. [2020-10-15 04:41:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-15 04:41:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 408 transitions. [2020-10-15 04:41:08,378 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 408 transitions. Word has length 61 [2020-10-15 04:41:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:08,379 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 408 transitions. [2020-10-15 04:41:08,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 408 transitions. [2020-10-15 04:41:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:41:08,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:08,381 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] [2020-10-15 04:41:08,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:41:08,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:08,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2092723287, now seen corresponding path program 1 times [2020-10-15 04:41:08,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:08,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719169268] [2020-10-15 04:41:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 04:41:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-15 04:41:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:12,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:12,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:12,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:12,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719169268] [2020-10-15 04:41:12,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:12,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:12,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767793890] [2020-10-15 04:41:12,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:12,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:12,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:12,176 INFO L87 Difference]: Start difference. First operand 247 states and 408 transitions. Second operand 5 states. [2020-10-15 04:41:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:13,226 INFO L93 Difference]: Finished difference Result 549 states and 898 transitions. [2020-10-15 04:41:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:13,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:41:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:13,229 INFO L225 Difference]: With dead ends: 549 [2020-10-15 04:41:13,229 INFO L226 Difference]: Without dead ends: 348 [2020-10-15 04:41:13,230 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 [2020-10-15 04:41:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-15 04:41:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 255. [2020-10-15 04:41:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 04:41:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 421 transitions. [2020-10-15 04:41:13,239 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 421 transitions. Word has length 62 [2020-10-15 04:41:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:13,242 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 421 transitions. [2020-10-15 04:41:13,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 421 transitions. [2020-10-15 04:41:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:41:13,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:13,243 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] [2020-10-15 04:41:13,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:41:13,244 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:13,244 INFO L82 PathProgramCache]: Analyzing trace with hash -882135362, now seen corresponding path program 1 times [2020-10-15 04:41:13,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:13,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117157516] [2020-10-15 04:41:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:18,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:18,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:41:18,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:18,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:18,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117157516] [2020-10-15 04:41:18,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:18,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:18,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087165343] [2020-10-15 04:41:18,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:18,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:18,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:18,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:18,453 INFO L87 Difference]: Start difference. First operand 255 states and 421 transitions. Second operand 5 states. [2020-10-15 04:41:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:19,266 INFO L93 Difference]: Finished difference Result 650 states and 1076 transitions. [2020-10-15 04:41:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:19,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:41:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:19,272 INFO L225 Difference]: With dead ends: 650 [2020-10-15 04:41:19,272 INFO L226 Difference]: Without dead ends: 409 [2020-10-15 04:41:19,273 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 [2020-10-15 04:41:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-15 04:41:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 256. [2020-10-15 04:41:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 04:41:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 422 transitions. [2020-10-15 04:41:19,283 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 422 transitions. Word has length 62 [2020-10-15 04:41:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:19,284 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 422 transitions. [2020-10-15 04:41:19,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 422 transitions. [2020-10-15 04:41:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:41:19,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:19,285 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] [2020-10-15 04:41:19,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:41:19,285 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:19,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1718247711, now seen corresponding path program 1 times [2020-10-15 04:41:19,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:19,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482700696] [2020-10-15 04:41:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 04:41:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-15 04:41:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:19,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:19,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:19,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:19,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:19,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482700696] [2020-10-15 04:41:19,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:19,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:19,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012031060] [2020-10-15 04:41:19,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:19,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:19,664 INFO L87 Difference]: Start difference. First operand 256 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:20,768 INFO L93 Difference]: Finished difference Result 599 states and 986 transitions. [2020-10-15 04:41:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:20,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:41:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:20,771 INFO L225 Difference]: With dead ends: 599 [2020-10-15 04:41:20,771 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 04:41:20,773 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 [2020-10-15 04:41:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 04:41:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 256. [2020-10-15 04:41:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 04:41:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 422 transitions. [2020-10-15 04:41:20,782 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 422 transitions. Word has length 62 [2020-10-15 04:41:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:20,783 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 422 transitions. [2020-10-15 04:41:20,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 422 transitions. [2020-10-15 04:41:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:41:20,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:20,784 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] [2020-10-15 04:41:20,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:20,785 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1584146114, now seen corresponding path program 1 times [2020-10-15 04:41:20,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:20,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56553318] [2020-10-15 04:41:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:25,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:41:25,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:25,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:41:25,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:25,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:25,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:25,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:41:25,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:25,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:25,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:25,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56553318] [2020-10-15 04:41:25,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:25,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:25,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523104560] [2020-10-15 04:41:25,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:25,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:25,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:25,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:25,945 INFO L87 Difference]: Start difference. First operand 256 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:26,833 INFO L93 Difference]: Finished difference Result 619 states and 1017 transitions. [2020-10-15 04:41:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:26,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:41:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:26,836 INFO L225 Difference]: With dead ends: 619 [2020-10-15 04:41:26,836 INFO L226 Difference]: Without dead ends: 377 [2020-10-15 04:41:26,837 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 [2020-10-15 04:41:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-15 04:41:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 256. [2020-10-15 04:41:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 04:41:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 423 transitions. [2020-10-15 04:41:26,848 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 423 transitions. Word has length 63 [2020-10-15 04:41:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:26,849 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 423 transitions. [2020-10-15 04:41:26,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 423 transitions. [2020-10-15 04:41:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 04:41:26,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:26,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:26,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:26,857 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash -576275258, now seen corresponding path program 1 times [2020-10-15 04:41:26,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:26,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582656616] [2020-10-15 04:41:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:41:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-15 04:41:27,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:27,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:41:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:27,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:27,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:27,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:27,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:27,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582656616] [2020-10-15 04:41:27,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:27,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:27,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683566726] [2020-10-15 04:41:27,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:27,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:27,239 INFO L87 Difference]: Start difference. First operand 256 states and 423 transitions. Second operand 5 states. [2020-10-15 04:41:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:28,670 INFO L93 Difference]: Finished difference Result 599 states and 988 transitions. [2020-10-15 04:41:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:28,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 04:41:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:28,673 INFO L225 Difference]: With dead ends: 599 [2020-10-15 04:41:28,673 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 04:41:28,674 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 [2020-10-15 04:41:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 04:41:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 256. [2020-10-15 04:41:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 04:41:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 423 transitions. [2020-10-15 04:41:28,682 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 423 transitions. Word has length 64 [2020-10-15 04:41:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:28,682 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 423 transitions. [2020-10-15 04:41:28,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 423 transitions. [2020-10-15 04:41:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:41:28,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:28,684 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] [2020-10-15 04:41:28,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:28,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:28,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1257626604, now seen corresponding path program 1 times [2020-10-15 04:41:28,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:28,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467252924] [2020-10-15 04:41:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:29,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:41:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-15 04:41:29,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:29,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:41:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:29,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:29,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:29,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467252924] [2020-10-15 04:41:29,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:29,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:29,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352506063] [2020-10-15 04:41:29,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:29,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:29,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:29,770 INFO L87 Difference]: Start difference. First operand 256 states and 423 transitions. Second operand 5 states. [2020-10-15 04:41:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:31,331 INFO L93 Difference]: Finished difference Result 600 states and 989 transitions. [2020-10-15 04:41:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:31,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:41:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:31,334 INFO L225 Difference]: With dead ends: 600 [2020-10-15 04:41:31,334 INFO L226 Difference]: Without dead ends: 358 [2020-10-15 04:41:31,335 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 [2020-10-15 04:41:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-15 04:41:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 256. [2020-10-15 04:41:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 04:41:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 423 transitions. [2020-10-15 04:41:31,344 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 423 transitions. Word has length 69 [2020-10-15 04:41:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:31,344 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 423 transitions. [2020-10-15 04:41:31,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 423 transitions. [2020-10-15 04:41:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:41:31,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:31,346 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] [2020-10-15 04:41:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:41:31,346 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:31,347 INFO L82 PathProgramCache]: Analyzing trace with hash -587740562, now seen corresponding path program 1 times [2020-10-15 04:41:31,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:31,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254643498] [2020-10-15 04:41:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:41:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:32,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:32,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:32,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:32,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:32,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254643498] [2020-10-15 04:41:32,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:32,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:32,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31408988] [2020-10-15 04:41:32,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:32,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:32,839 INFO L87 Difference]: Start difference. First operand 256 states and 423 transitions. Second operand 5 states. [2020-10-15 04:41:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:34,125 INFO L93 Difference]: Finished difference Result 599 states and 988 transitions. [2020-10-15 04:41:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:34,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:41:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:34,128 INFO L225 Difference]: With dead ends: 599 [2020-10-15 04:41:34,129 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 04:41:34,130 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 [2020-10-15 04:41:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 04:41:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 255. [2020-10-15 04:41:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 04:41:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 422 transitions. [2020-10-15 04:41:34,139 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 422 transitions. Word has length 69 [2020-10-15 04:41:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:34,139 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 422 transitions. [2020-10-15 04:41:34,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 422 transitions. [2020-10-15 04:41:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:41:34,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:34,140 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] [2020-10-15 04:41:34,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:41:34,141 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1791965126, now seen corresponding path program 1 times [2020-10-15 04:41:34,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:34,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136445800] [2020-10-15 04:41:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:35,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:41:35,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:35,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:35,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:35,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136445800] [2020-10-15 04:41:35,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:35,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:35,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461677105] [2020-10-15 04:41:35,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:35,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:35,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:35,368 INFO L87 Difference]: Start difference. First operand 255 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:36,387 INFO L93 Difference]: Finished difference Result 597 states and 986 transitions. [2020-10-15 04:41:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:36,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:41:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:36,389 INFO L225 Difference]: With dead ends: 597 [2020-10-15 04:41:36,390 INFO L226 Difference]: Without dead ends: 356 [2020-10-15 04:41:36,390 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 [2020-10-15 04:41:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-15 04:41:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 255. [2020-10-15 04:41:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 04:41:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 422 transitions. [2020-10-15 04:41:36,409 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 422 transitions. Word has length 69 [2020-10-15 04:41:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:36,409 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 422 transitions. [2020-10-15 04:41:36,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 422 transitions. [2020-10-15 04:41:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:41:36,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:36,411 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] [2020-10-15 04:41:36,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:41:36,411 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash -462061620, now seen corresponding path program 1 times [2020-10-15 04:41:36,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:36,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999254486] [2020-10-15 04:41:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:37,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:41:37,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-15 04:41:37,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:37,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 04:41:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:37,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:37,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:37,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:37,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:37,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:37,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:37,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999254486] [2020-10-15 04:41:37,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:37,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:37,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128033924] [2020-10-15 04:41:37,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:37,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:37,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:37,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:37,916 INFO L87 Difference]: Start difference. First operand 255 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:39,112 INFO L93 Difference]: Finished difference Result 597 states and 986 transitions. [2020-10-15 04:41:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:39,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:41:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:39,115 INFO L225 Difference]: With dead ends: 597 [2020-10-15 04:41:39,115 INFO L226 Difference]: Without dead ends: 356 [2020-10-15 04:41:39,115 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 [2020-10-15 04:41:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-15 04:41:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 255. [2020-10-15 04:41:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 04:41:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 422 transitions. [2020-10-15 04:41:39,125 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 422 transitions. Word has length 72 [2020-10-15 04:41:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:39,126 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 422 transitions. [2020-10-15 04:41:39,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 422 transitions. [2020-10-15 04:41:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 04:41:39,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:39,128 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] [2020-10-15 04:41:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:41:39,128 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 960931023, now seen corresponding path program 1 times [2020-10-15 04:41:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006056758] [2020-10-15 04:41:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:41:42,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3476 [2020-10-15 04:41:42,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:41:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:42,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006056758] [2020-10-15 04:41:42,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:42,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:42,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430337881] [2020-10-15 04:41:42,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:42,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:42,692 INFO L87 Difference]: Start difference. First operand 255 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:43,733 INFO L93 Difference]: Finished difference Result 597 states and 986 transitions. [2020-10-15 04:41:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:43,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-15 04:41:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:43,737 INFO L225 Difference]: With dead ends: 597 [2020-10-15 04:41:43,738 INFO L226 Difference]: Without dead ends: 356 [2020-10-15 04:41:43,739 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 [2020-10-15 04:41:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-15 04:41:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 255. [2020-10-15 04:41:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 04:41:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 422 transitions. [2020-10-15 04:41:43,747 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 422 transitions. Word has length 75 [2020-10-15 04:41:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:43,748 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 422 transitions. [2020-10-15 04:41:43,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 422 transitions. [2020-10-15 04:41:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:41:43,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:43,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:43,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:41:43,750 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1712935754, now seen corresponding path program 1 times [2020-10-15 04:41:43,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:43,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417848401] [2020-10-15 04:41:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:43,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:41:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:44,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:44,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417848401] [2020-10-15 04:41:44,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:44,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:44,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400268364] [2020-10-15 04:41:44,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:44,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:44,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:44,066 INFO L87 Difference]: Start difference. First operand 255 states and 422 transitions. Second operand 5 states. [2020-10-15 04:41:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:44,901 INFO L93 Difference]: Finished difference Result 586 states and 968 transitions. [2020-10-15 04:41:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:44,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:41:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:44,904 INFO L225 Difference]: With dead ends: 586 [2020-10-15 04:41:44,904 INFO L226 Difference]: Without dead ends: 345 [2020-10-15 04:41:44,905 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 [2020-10-15 04:41:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-15 04:41:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 279. [2020-10-15 04:41:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-15 04:41:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 467 transitions. [2020-10-15 04:41:44,914 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 467 transitions. Word has length 76 [2020-10-15 04:41:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:44,914 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 467 transitions. [2020-10-15 04:41:44,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 467 transitions. [2020-10-15 04:41:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:41:44,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:44,916 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] [2020-10-15 04:41:44,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:41:44,917 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -909346297, now seen corresponding path program 1 times [2020-10-15 04:41:44,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:44,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119054812] [2020-10-15 04:41:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:41:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3010 [2020-10-15 04:41:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:47,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:41:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 04:41:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:41:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:48,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:48,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119054812] [2020-10-15 04:41:48,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:48,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:41:48,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836846714] [2020-10-15 04:41:48,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:41:48,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:48,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:41:48,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:41:48,160 INFO L87 Difference]: Start difference. First operand 279 states and 467 transitions. Second operand 8 states. [2020-10-15 04:41:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:50,108 INFO L93 Difference]: Finished difference Result 917 states and 1525 transitions. [2020-10-15 04:41:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:41:50,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-15 04:41:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:50,114 INFO L225 Difference]: With dead ends: 917 [2020-10-15 04:41:50,114 INFO L226 Difference]: Without dead ends: 676 [2020-10-15 04:41:50,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:41:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-15 04:41:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 501. [2020-10-15 04:41:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-15 04:41:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 850 transitions. [2020-10-15 04:41:50,155 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 850 transitions. Word has length 78 [2020-10-15 04:41:50,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:50,159 INFO L479 AbstractCegarLoop]: Abstraction has 501 states and 850 transitions. [2020-10-15 04:41:50,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:41:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 850 transitions. [2020-10-15 04:41:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:41:50,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:50,161 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] [2020-10-15 04:41:50,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:41:50,162 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1857369613, now seen corresponding path program 1 times [2020-10-15 04:41:50,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:50,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440521241] [2020-10-15 04:41:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 04:41:51,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-15 04:41:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:51,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:51,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:51,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:51,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:51,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440521241] [2020-10-15 04:41:51,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:51,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:51,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430108712] [2020-10-15 04:41:51,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:51,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:51,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:51,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:51,787 INFO L87 Difference]: Start difference. First operand 501 states and 850 transitions. Second operand 4 states. [2020-10-15 04:41:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:52,304 INFO L93 Difference]: Finished difference Result 1421 states and 2418 transitions. [2020-10-15 04:41:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:52,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-15 04:41:52,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:52,310 INFO L225 Difference]: With dead ends: 1421 [2020-10-15 04:41:52,310 INFO L226 Difference]: Without dead ends: 958 [2020-10-15 04:41:52,311 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 [2020-10-15 04:41:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-15 04:41:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 954. [2020-10-15 04:41:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-15 04:41:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1606 transitions. [2020-10-15 04:41:52,342 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1606 transitions. Word has length 79 [2020-10-15 04:41:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:52,342 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1606 transitions. [2020-10-15 04:41:52,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1606 transitions. [2020-10-15 04:41:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:41:52,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:52,345 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] [2020-10-15 04:41:52,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:41:52,346 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:52,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1065790385, now seen corresponding path program 1 times [2020-10-15 04:41:52,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:52,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641856306] [2020-10-15 04:41:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 04:41:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-15 04:41:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:53,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 04:41:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:53,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641856306] [2020-10-15 04:41:53,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:53,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:53,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625796477] [2020-10-15 04:41:53,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:53,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:53,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:53,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:53,396 INFO L87 Difference]: Start difference. First operand 954 states and 1606 transitions. Second operand 5 states. [2020-10-15 04:41:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:54,444 INFO L93 Difference]: Finished difference Result 1799 states and 2988 transitions. [2020-10-15 04:41:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:54,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:41:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:54,451 INFO L225 Difference]: With dead ends: 1799 [2020-10-15 04:41:54,451 INFO L226 Difference]: Without dead ends: 1334 [2020-10-15 04:41:54,453 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 [2020-10-15 04:41:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-15 04:41:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 954. [2020-10-15 04:41:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-15 04:41:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1606 transitions. [2020-10-15 04:41:54,485 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1606 transitions. Word has length 79 [2020-10-15 04:41:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:54,486 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1606 transitions. [2020-10-15 04:41:54,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1606 transitions. [2020-10-15 04:41:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:41:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:54,489 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] [2020-10-15 04:41:54,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:41:54,489 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:54,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1983932958, now seen corresponding path program 1 times [2020-10-15 04:41:54,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:54,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488839402] [2020-10-15 04:41:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 04:41:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-15 04:41:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:41:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:41:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:55,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:55,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488839402] [2020-10-15 04:41:55,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:55,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:55,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384314918] [2020-10-15 04:41:55,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:55,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:55,518 INFO L87 Difference]: Start difference. First operand 954 states and 1606 transitions. Second operand 5 states. [2020-10-15 04:41:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:56,549 INFO L93 Difference]: Finished difference Result 2208 states and 3678 transitions. [2020-10-15 04:41:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:56,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:41:56,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:56,556 INFO L225 Difference]: With dead ends: 2208 [2020-10-15 04:41:56,556 INFO L226 Difference]: Without dead ends: 1292 [2020-10-15 04:41:56,558 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 [2020-10-15 04:41:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-10-15 04:41:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1102. [2020-10-15 04:41:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-15 04:41:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1878 transitions. [2020-10-15 04:41:56,593 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1878 transitions. Word has length 80 [2020-10-15 04:41:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:56,594 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1878 transitions. [2020-10-15 04:41:56,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1878 transitions. [2020-10-15 04:41:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 04:41:56,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:56,596 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] [2020-10-15 04:41:56,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:41:56,597 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash -772209399, now seen corresponding path program 1 times [2020-10-15 04:41:56,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:56,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533714331] [2020-10-15 04:41:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:41:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:57,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533714331] [2020-10-15 04:41:57,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:57,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:57,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763562167] [2020-10-15 04:41:57,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:57,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:57,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:57,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:57,616 INFO L87 Difference]: Start difference. First operand 1102 states and 1878 transitions. Second operand 5 states. [2020-10-15 04:41:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:58,703 INFO L93 Difference]: Finished difference Result 2021 states and 3396 transitions. [2020-10-15 04:41:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:58,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-15 04:41:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:58,709 INFO L225 Difference]: With dead ends: 2021 [2020-10-15 04:41:58,710 INFO L226 Difference]: Without dead ends: 1482 [2020-10-15 04:41:58,712 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 [2020-10-15 04:41:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-10-15 04:41:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1102. [2020-10-15 04:41:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-15 04:41:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1878 transitions. [2020-10-15 04:41:58,767 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1878 transitions. Word has length 81 [2020-10-15 04:41:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:58,768 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1878 transitions. [2020-10-15 04:41:58,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1878 transitions. [2020-10-15 04:41:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 04:41:58,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:58,771 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] [2020-10-15 04:41:58,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:41:58,771 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:58,772 INFO L82 PathProgramCache]: Analyzing trace with hash -625470186, now seen corresponding path program 1 times [2020-10-15 04:41:58,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:58,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207499456] [2020-10-15 04:41:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:59,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:59,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:59,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:59,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:59,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:59,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:59,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207499456] [2020-10-15 04:41:59,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:59,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:59,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665705995] [2020-10-15 04:41:59,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:59,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:59,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:59,110 INFO L87 Difference]: Start difference. First operand 1102 states and 1878 transitions. Second operand 5 states. [2020-10-15 04:42:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:00,000 INFO L93 Difference]: Finished difference Result 2233 states and 3783 transitions. [2020-10-15 04:42:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:00,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-15 04:42:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:00,007 INFO L225 Difference]: With dead ends: 2233 [2020-10-15 04:42:00,007 INFO L226 Difference]: Without dead ends: 1169 [2020-10-15 04:42:00,009 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 [2020-10-15 04:42:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-10-15 04:42:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1107. [2020-10-15 04:42:00,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-10-15 04:42:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1887 transitions. [2020-10-15 04:42:00,040 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1887 transitions. Word has length 82 [2020-10-15 04:42:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:00,041 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1887 transitions. [2020-10-15 04:42:00,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1887 transitions. [2020-10-15 04:42:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 04:42:00,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:00,044 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] [2020-10-15 04:42:00,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:42:00,044 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:00,045 INFO L82 PathProgramCache]: Analyzing trace with hash -190567960, now seen corresponding path program 1 times [2020-10-15 04:42:00,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:00,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516709378] [2020-10-15 04:42:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:00,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:00,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:00,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:00,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516709378] [2020-10-15 04:42:00,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:00,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:00,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746507800] [2020-10-15 04:42:00,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:00,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:00,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:00,459 INFO L87 Difference]: Start difference. First operand 1107 states and 1887 transitions. Second operand 5 states. [2020-10-15 04:42:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:01,350 INFO L93 Difference]: Finished difference Result 2230 states and 3779 transitions. [2020-10-15 04:42:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:01,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-15 04:42:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:01,362 INFO L225 Difference]: With dead ends: 2230 [2020-10-15 04:42:01,362 INFO L226 Difference]: Without dead ends: 1166 [2020-10-15 04:42:01,365 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 [2020-10-15 04:42:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-10-15 04:42:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1108. [2020-10-15 04:42:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-15 04:42:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1888 transitions. [2020-10-15 04:42:01,401 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1888 transitions. Word has length 83 [2020-10-15 04:42:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:01,401 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1888 transitions. [2020-10-15 04:42:01,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1888 transitions. [2020-10-15 04:42:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 04:42:01,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:01,405 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] [2020-10-15 04:42:01,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:42:01,405 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash 791321083, now seen corresponding path program 1 times [2020-10-15 04:42:01,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:01,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267237887] [2020-10-15 04:42:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:02,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 04:42:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-15 04:42:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:02,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 04:42:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:02,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:02,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267237887] [2020-10-15 04:42:02,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500463427] [2020-10-15 04:42:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:02,405 INFO L87 Difference]: Start difference. First operand 1108 states and 1888 transitions. Second operand 5 states. [2020-10-15 04:42:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:03,418 INFO L93 Difference]: Finished difference Result 1590 states and 2674 transitions. [2020-10-15 04:42:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:03,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 04:42:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:03,424 INFO L225 Difference]: With dead ends: 1590 [2020-10-15 04:42:03,424 INFO L226 Difference]: Without dead ends: 1310 [2020-10-15 04:42:03,425 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 [2020-10-15 04:42:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-10-15 04:42:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1108. [2020-10-15 04:42:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-15 04:42:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1888 transitions. [2020-10-15 04:42:03,453 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1888 transitions. Word has length 88 [2020-10-15 04:42:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:03,453 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1888 transitions. [2020-10-15 04:42:03,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1888 transitions. [2020-10-15 04:42:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:42:03,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:03,457 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] [2020-10-15 04:42:03,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:42:03,457 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:03,457 INFO L82 PathProgramCache]: Analyzing trace with hash -324899198, now seen corresponding path program 1 times [2020-10-15 04:42:03,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:03,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699418056] [2020-10-15 04:42:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:42:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 04:42:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:04,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:04,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:04,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699418056] [2020-10-15 04:42:04,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:04,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:42:04,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830307602] [2020-10-15 04:42:04,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:42:04,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:04,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:42:04,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:42:04,603 INFO L87 Difference]: Start difference. First operand 1108 states and 1888 transitions. Second operand 9 states. [2020-10-15 04:42:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:07,750 INFO L93 Difference]: Finished difference Result 2372 states and 3980 transitions. [2020-10-15 04:42:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:42:07,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-15 04:42:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:07,759 INFO L225 Difference]: With dead ends: 2372 [2020-10-15 04:42:07,759 INFO L226 Difference]: Without dead ends: 1833 [2020-10-15 04:42:07,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:42:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-10-15 04:42:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1583. [2020-10-15 04:42:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-10-15 04:42:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2722 transitions. [2020-10-15 04:42:07,802 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2722 transitions. Word has length 89 [2020-10-15 04:42:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:07,802 INFO L479 AbstractCegarLoop]: Abstraction has 1583 states and 2722 transitions. [2020-10-15 04:42:07,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:42:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2722 transitions. [2020-10-15 04:42:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:42:07,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:07,806 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] [2020-10-15 04:42:07,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:42:07,806 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:07,807 INFO L82 PathProgramCache]: Analyzing trace with hash 419929726, now seen corresponding path program 1 times [2020-10-15 04:42:07,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:07,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844457787] [2020-10-15 04:42:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:12,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:12,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:12,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:12,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:12,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:12,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:12,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:12,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:12,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:12,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844457787] [2020-10-15 04:42:12,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:12,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:12,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066212117] [2020-10-15 04:42:12,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:12,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:12,894 INFO L87 Difference]: Start difference. First operand 1583 states and 2722 transitions. Second operand 5 states. [2020-10-15 04:42:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:13,954 INFO L93 Difference]: Finished difference Result 2330 states and 3953 transitions. [2020-10-15 04:42:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:13,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-15 04:42:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:13,963 INFO L225 Difference]: With dead ends: 2330 [2020-10-15 04:42:13,964 INFO L226 Difference]: Without dead ends: 1779 [2020-10-15 04:42:13,965 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 [2020-10-15 04:42:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-10-15 04:42:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1647. [2020-10-15 04:42:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2020-10-15 04:42:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2838 transitions. [2020-10-15 04:42:14,008 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2838 transitions. Word has length 90 [2020-10-15 04:42:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:14,008 INFO L479 AbstractCegarLoop]: Abstraction has 1647 states and 2838 transitions. [2020-10-15 04:42:14,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2838 transitions. [2020-10-15 04:42:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:42:14,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:14,012 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] [2020-10-15 04:42:14,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:42:14,013 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:14,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1489694214, now seen corresponding path program 1 times [2020-10-15 04:42:14,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:14,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298088814] [2020-10-15 04:42:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:15,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 04:42:15,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-15 04:42:15,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:15,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:42:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 04:42:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:16,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:16,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298088814] [2020-10-15 04:42:16,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:16,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:42:16,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056403957] [2020-10-15 04:42:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:42:16,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:16,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:42:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:42:16,114 INFO L87 Difference]: Start difference. First operand 1647 states and 2838 transitions. Second operand 9 states. [2020-10-15 04:42:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:19,676 INFO L93 Difference]: Finished difference Result 3148 states and 5326 transitions. [2020-10-15 04:42:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:42:19,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-15 04:42:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:19,685 INFO L225 Difference]: With dead ends: 3148 [2020-10-15 04:42:19,686 INFO L226 Difference]: Without dead ends: 2336 [2020-10-15 04:42:19,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:42:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2020-10-15 04:42:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2020-10-15 04:42:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-10-15 04:42:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2692 transitions. [2020-10-15 04:42:19,734 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2692 transitions. Word has length 90 [2020-10-15 04:42:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:19,735 INFO L479 AbstractCegarLoop]: Abstraction has 1568 states and 2692 transitions. [2020-10-15 04:42:19,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:42:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2692 transitions. [2020-10-15 04:42:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:42:19,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:19,738 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] [2020-10-15 04:42:19,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:42:19,738 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:19,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1811693300, now seen corresponding path program 1 times [2020-10-15 04:42:19,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:19,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565836971] [2020-10-15 04:42:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 04:42:20,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-15 04:42:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:20,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:42:20,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:20,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:20,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565836971] [2020-10-15 04:42:20,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:20,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:20,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881952130] [2020-10-15 04:42:20,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:20,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:20,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:20,289 INFO L87 Difference]: Start difference. First operand 1568 states and 2692 transitions. Second operand 5 states. [2020-10-15 04:42:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:21,369 INFO L93 Difference]: Finished difference Result 3607 states and 6123 transitions. [2020-10-15 04:42:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:21,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-15 04:42:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:21,388 INFO L225 Difference]: With dead ends: 3607 [2020-10-15 04:42:21,388 INFO L226 Difference]: Without dead ends: 2083 [2020-10-15 04:42:21,391 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 [2020-10-15 04:42:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-10-15 04:42:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1699. [2020-10-15 04:42:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-15 04:42:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2927 transitions. [2020-10-15 04:42:21,434 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2927 transitions. Word has length 90 [2020-10-15 04:42:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:21,434 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2927 transitions. [2020-10-15 04:42:21,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2927 transitions. [2020-10-15 04:42:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:42:21,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:21,438 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] [2020-10-15 04:42:21,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:42:21,438 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash 862872211, now seen corresponding path program 1 times [2020-10-15 04:42:21,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:21,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549840235] [2020-10-15 04:42:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 04:42:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 04:42:26,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549840235] [2020-10-15 04:42:26,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:26,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:42:26,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851925869] [2020-10-15 04:42:26,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:42:26,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:42:26,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:42:26,600 INFO L87 Difference]: Start difference. First operand 1699 states and 2927 transitions. Second operand 8 states. [2020-10-15 04:42:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:28,464 INFO L93 Difference]: Finished difference Result 3956 states and 6786 transitions. [2020-10-15 04:42:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:42:28,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-15 04:42:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:28,471 INFO L225 Difference]: With dead ends: 3956 [2020-10-15 04:42:28,472 INFO L226 Difference]: Without dead ends: 2282 [2020-10-15 04:42:28,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:42:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-15 04:42:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2173. [2020-10-15 04:42:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-15 04:42:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3749 transitions. [2020-10-15 04:42:28,525 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3749 transitions. Word has length 91 [2020-10-15 04:42:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:28,526 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 3749 transitions. [2020-10-15 04:42:28,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:42:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3749 transitions. [2020-10-15 04:42:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:42:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:28,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:28,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:42:28,531 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash 207009469, now seen corresponding path program 1 times [2020-10-15 04:42:28,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:28,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365946638] [2020-10-15 04:42:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-15 04:42:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:42:33,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365946638] [2020-10-15 04:42:33,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:33,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:33,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261114477] [2020-10-15 04:42:33,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:33,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:33,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:33,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:33,642 INFO L87 Difference]: Start difference. First operand 2173 states and 3749 transitions. Second operand 5 states. [2020-10-15 04:42:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:34,717 INFO L93 Difference]: Finished difference Result 2862 states and 4864 transitions. [2020-10-15 04:42:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:34,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-15 04:42:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:34,725 INFO L225 Difference]: With dead ends: 2862 [2020-10-15 04:42:34,725 INFO L226 Difference]: Without dead ends: 2549 [2020-10-15 04:42:34,727 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 [2020-10-15 04:42:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2020-10-15 04:42:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2173. [2020-10-15 04:42:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-15 04:42:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3749 transitions. [2020-10-15 04:42:34,774 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3749 transitions. Word has length 92 [2020-10-15 04:42:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:34,774 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 3749 transitions. [2020-10-15 04:42:34,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3749 transitions. [2020-10-15 04:42:34,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:42:34,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:34,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:34,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:42:34,779 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1708880267, now seen corresponding path program 1 times [2020-10-15 04:42:34,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:34,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703706592] [2020-10-15 04:42:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 04:42:35,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:35,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-15 04:42:35,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:35,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:42:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:35,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703706592] [2020-10-15 04:42:35,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:35,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:35,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915690189] [2020-10-15 04:42:35,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:35,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:35,249 INFO L87 Difference]: Start difference. First operand 2173 states and 3749 transitions. Second operand 5 states. [2020-10-15 04:42:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:36,415 INFO L93 Difference]: Finished difference Result 4981 states and 8504 transitions. [2020-10-15 04:42:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:36,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-15 04:42:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:36,422 INFO L225 Difference]: With dead ends: 4981 [2020-10-15 04:42:36,422 INFO L226 Difference]: Without dead ends: 2833 [2020-10-15 04:42:36,426 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 [2020-10-15 04:42:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-15 04:42:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2173. [2020-10-15 04:42:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-15 04:42:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3749 transitions. [2020-10-15 04:42:36,487 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3749 transitions. Word has length 93 [2020-10-15 04:42:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:36,487 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 3749 transitions. [2020-10-15 04:42:36,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3749 transitions. [2020-10-15 04:42:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 04:42:36,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:36,491 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] [2020-10-15 04:42:36,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:42:36,492 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1430661450, now seen corresponding path program 1 times [2020-10-15 04:42:36,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:36,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271213704] [2020-10-15 04:42:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 04:42:41,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:42:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:41,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:42:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:41,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:41,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:41,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:41,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271213704] [2020-10-15 04:42:41,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:41,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:41,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651911484] [2020-10-15 04:42:41,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:41,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:41,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:41,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:41,589 INFO L87 Difference]: Start difference. First operand 2173 states and 3749 transitions. Second operand 5 states. [2020-10-15 04:42:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:42,660 INFO L93 Difference]: Finished difference Result 2985 states and 5095 transitions. [2020-10-15 04:42:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:42,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-15 04:42:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:42,667 INFO L225 Difference]: With dead ends: 2985 [2020-10-15 04:42:42,667 INFO L226 Difference]: Without dead ends: 2369 [2020-10-15 04:42:42,670 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 [2020-10-15 04:42:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-10-15 04:42:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2247. [2020-10-15 04:42:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-10-15 04:42:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3883 transitions. [2020-10-15 04:42:42,731 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3883 transitions. Word has length 96 [2020-10-15 04:42:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:42,732 INFO L479 AbstractCegarLoop]: Abstraction has 2247 states and 3883 transitions. [2020-10-15 04:42:42,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3883 transitions. [2020-10-15 04:42:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 04:42:42,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:42,736 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] [2020-10-15 04:42:42,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:42:42,736 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash -396224192, now seen corresponding path program 1 times [2020-10-15 04:42:42,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:42,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446446669] [2020-10-15 04:42:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:43,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:42:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:43,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:43,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:43,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446446669] [2020-10-15 04:42:43,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:43,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:43,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990787337] [2020-10-15 04:42:43,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:43,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:43,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:43,351 INFO L87 Difference]: Start difference. First operand 2247 states and 3883 transitions. Second operand 5 states. [2020-10-15 04:42:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:44,504 INFO L93 Difference]: Finished difference Result 5129 states and 8764 transitions. [2020-10-15 04:42:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:44,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-15 04:42:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:44,512 INFO L225 Difference]: With dead ends: 5129 [2020-10-15 04:42:44,512 INFO L226 Difference]: Without dead ends: 2907 [2020-10-15 04:42:44,517 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 [2020-10-15 04:42:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-10-15 04:42:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2469. [2020-10-15 04:42:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-10-15 04:42:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 4285 transitions. [2020-10-15 04:42:44,580 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 4285 transitions. Word has length 96 [2020-10-15 04:42:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:44,580 INFO L479 AbstractCegarLoop]: Abstraction has 2469 states and 4285 transitions. [2020-10-15 04:42:44,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 4285 transitions. [2020-10-15 04:42:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 04:42:44,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:44,584 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] [2020-10-15 04:42:44,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:42:44,585 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash -874996684, now seen corresponding path program 1 times [2020-10-15 04:42:44,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:44,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374020254] [2020-10-15 04:42:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:42:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:49,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:49,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374020254] [2020-10-15 04:42:49,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:49,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:49,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387945331] [2020-10-15 04:42:49,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:49,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:49,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:49,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:49,698 INFO L87 Difference]: Start difference. First operand 2469 states and 4285 transitions. Second operand 5 states. [2020-10-15 04:42:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:50,832 INFO L93 Difference]: Finished difference Result 3349 states and 5756 transitions. [2020-10-15 04:42:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:50,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-15 04:42:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:50,838 INFO L225 Difference]: With dead ends: 3349 [2020-10-15 04:42:50,839 INFO L226 Difference]: Without dead ends: 2659 [2020-10-15 04:42:50,841 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 [2020-10-15 04:42:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2020-10-15 04:42:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2545. [2020-10-15 04:42:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2020-10-15 04:42:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4421 transitions. [2020-10-15 04:42:50,908 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4421 transitions. Word has length 97 [2020-10-15 04:42:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:50,908 INFO L479 AbstractCegarLoop]: Abstraction has 2545 states and 4421 transitions. [2020-10-15 04:42:50,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4421 transitions. [2020-10-15 04:42:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 04:42:50,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:50,913 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] [2020-10-15 04:42:50,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:42:50,914 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1673876738, now seen corresponding path program 1 times [2020-10-15 04:42:50,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:50,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184626815] [2020-10-15 04:42:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:42:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:51,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:51,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:51,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184626815] [2020-10-15 04:42:51,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:51,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:51,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087225631] [2020-10-15 04:42:51,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:51,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:51,369 INFO L87 Difference]: Start difference. First operand 2545 states and 4421 transitions. Second operand 5 states. [2020-10-15 04:42:52,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:52,557 INFO L93 Difference]: Finished difference Result 5405 states and 9268 transitions. [2020-10-15 04:42:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:52,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-15 04:42:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:52,561 INFO L225 Difference]: With dead ends: 5405 [2020-10-15 04:42:52,561 INFO L226 Difference]: Without dead ends: 2885 [2020-10-15 04:42:52,565 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 [2020-10-15 04:42:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-10-15 04:42:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2469. [2020-10-15 04:42:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-10-15 04:42:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 4285 transitions. [2020-10-15 04:42:52,632 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 4285 transitions. Word has length 97 [2020-10-15 04:42:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:52,632 INFO L479 AbstractCegarLoop]: Abstraction has 2469 states and 4285 transitions. [2020-10-15 04:42:52,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 4285 transitions. [2020-10-15 04:42:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 04:42:52,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:52,637 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] [2020-10-15 04:42:52,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:42:52,638 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:52,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1482608661, now seen corresponding path program 1 times [2020-10-15 04:42:52,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:52,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625417374] [2020-10-15 04:42:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 04:42:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:53,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625417374] [2020-10-15 04:42:53,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:53,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:53,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993177500] [2020-10-15 04:42:53,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:53,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:53,328 INFO L87 Difference]: Start difference. First operand 2469 states and 4285 transitions. Second operand 4 states. [2020-10-15 04:42:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:53,897 INFO L93 Difference]: Finished difference Result 4925 states and 8585 transitions. [2020-10-15 04:42:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:53,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-15 04:42:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:53,903 INFO L225 Difference]: With dead ends: 4925 [2020-10-15 04:42:53,903 INFO L226 Difference]: Without dead ends: 3689 [2020-10-15 04:42:53,905 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 [2020-10-15 04:42:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-10-15 04:42:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3675. [2020-10-15 04:42:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-10-15 04:42:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 6376 transitions. [2020-10-15 04:42:53,998 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 6376 transitions. Word has length 99 [2020-10-15 04:42:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:53,999 INFO L479 AbstractCegarLoop]: Abstraction has 3675 states and 6376 transitions. [2020-10-15 04:42:53,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 6376 transitions. [2020-10-15 04:42:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 04:42:54,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:54,005 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] [2020-10-15 04:42:54,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 04:42:54,005 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash -362758505, now seen corresponding path program 1 times [2020-10-15 04:42:54,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:54,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466612682] [2020-10-15 04:42:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:42:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:54,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466612682] [2020-10-15 04:42:54,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:54,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:54,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117465717] [2020-10-15 04:42:54,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:54,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:54,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:54,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:54,323 INFO L87 Difference]: Start difference. First operand 3675 states and 6376 transitions. Second operand 5 states. [2020-10-15 04:42:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:55,472 INFO L93 Difference]: Finished difference Result 7931 states and 13562 transitions. [2020-10-15 04:42:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:55,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-15 04:42:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:55,479 INFO L225 Difference]: With dead ends: 7931 [2020-10-15 04:42:55,479 INFO L226 Difference]: Without dead ends: 4281 [2020-10-15 04:42:55,484 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 [2020-10-15 04:42:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2020-10-15 04:42:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3735. [2020-10-15 04:42:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2020-10-15 04:42:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 6484 transitions. [2020-10-15 04:42:55,556 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 6484 transitions. Word has length 99 [2020-10-15 04:42:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:55,557 INFO L479 AbstractCegarLoop]: Abstraction has 3735 states and 6484 transitions. [2020-10-15 04:42:55,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 6484 transitions. [2020-10-15 04:42:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:42:55,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:55,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:55,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 04:42:55,561 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:55,562 INFO L82 PathProgramCache]: Analyzing trace with hash -636440441, now seen corresponding path program 1 times [2020-10-15 04:42:55,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:55,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706553513] [2020-10-15 04:42:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:42:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:42:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:55,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:55,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:55,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:42:55,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:55,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:55,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706553513] [2020-10-15 04:42:55,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:55,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:55,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404274526] [2020-10-15 04:42:55,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:55,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:55,958 INFO L87 Difference]: Start difference. First operand 3735 states and 6484 transitions. Second operand 5 states. [2020-10-15 04:42:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:57,129 INFO L93 Difference]: Finished difference Result 7955 states and 13618 transitions. [2020-10-15 04:42:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:57,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 04:42:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:57,135 INFO L225 Difference]: With dead ends: 7955 [2020-10-15 04:42:57,136 INFO L226 Difference]: Without dead ends: 4245 [2020-10-15 04:42:57,141 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 [2020-10-15 04:42:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2020-10-15 04:42:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 3291. [2020-10-15 04:42:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3291 states. [2020-10-15 04:42:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5680 transitions. [2020-10-15 04:42:57,203 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5680 transitions. Word has length 100 [2020-10-15 04:42:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:57,203 INFO L479 AbstractCegarLoop]: Abstraction has 3291 states and 5680 transitions. [2020-10-15 04:42:57,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5680 transitions. [2020-10-15 04:42:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:42:57,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:57,207 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] [2020-10-15 04:42:57,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 04:42:57,207 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:57,208 INFO L82 PathProgramCache]: Analyzing trace with hash -946669618, now seen corresponding path program 1 times [2020-10-15 04:42:57,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:57,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691192821] [2020-10-15 04:42:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:42:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:58,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:58,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-15 04:42:58,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691192821] [2020-10-15 04:42:58,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:58,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:58,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079744] [2020-10-15 04:42:58,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:58,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:58,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:58,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:58,536 INFO L87 Difference]: Start difference. First operand 3291 states and 5680 transitions. Second operand 5 states. [2020-10-15 04:42:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:59,392 INFO L93 Difference]: Finished difference Result 4246 states and 7293 transitions. [2020-10-15 04:42:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:59,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-15 04:42:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:59,397 INFO L225 Difference]: With dead ends: 4246 [2020-10-15 04:42:59,397 INFO L226 Difference]: Without dead ends: 3309 [2020-10-15 04:42:59,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:42:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2020-10-15 04:42:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3301. [2020-10-15 04:42:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-10-15 04:42:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 5692 transitions. [2020-10-15 04:42:59,455 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 5692 transitions. Word has length 103 [2020-10-15 04:42:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:59,455 INFO L479 AbstractCegarLoop]: Abstraction has 3301 states and 5692 transitions. [2020-10-15 04:42:59,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 5692 transitions. [2020-10-15 04:42:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:42:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:59,459 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] [2020-10-15 04:42:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 04:42:59,459 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1736688167, now seen corresponding path program 1 times [2020-10-15 04:42:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478957669] [2020-10-15 04:42:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:43:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:43:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:43:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:43:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:04,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:04,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478957669] [2020-10-15 04:43:04,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:04,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:04,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124222576] [2020-10-15 04:43:04,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:04,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:04,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:04,893 INFO L87 Difference]: Start difference. First operand 3301 states and 5692 transitions. Second operand 11 states. [2020-10-15 04:43:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:08,201 INFO L93 Difference]: Finished difference Result 7762 states and 13280 transitions. [2020-10-15 04:43:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:43:08,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-15 04:43:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:08,209 INFO L225 Difference]: With dead ends: 7762 [2020-10-15 04:43:08,209 INFO L226 Difference]: Without dead ends: 5243 [2020-10-15 04:43:08,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:43:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2020-10-15 04:43:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5060. [2020-10-15 04:43:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-10-15 04:43:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 8710 transitions. [2020-10-15 04:43:08,323 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 8710 transitions. Word has length 104 [2020-10-15 04:43:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:08,323 INFO L479 AbstractCegarLoop]: Abstraction has 5060 states and 8710 transitions. [2020-10-15 04:43:08,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 8710 transitions. [2020-10-15 04:43:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 04:43:08,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:08,330 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2020-10-15 04:43:08,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 04:43:08,330 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1343338538, now seen corresponding path program 2 times [2020-10-15 04:43:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:08,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63843189] [2020-10-15 04:43:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 04:43:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:43:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 04:43:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 04:43:13,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63843189] [2020-10-15 04:43:13,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:13,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:43:13,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300445790] [2020-10-15 04:43:13,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:43:13,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:13,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:43:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:43:13,545 INFO L87 Difference]: Start difference. First operand 5060 states and 8710 transitions. Second operand 9 states. [2020-10-15 04:43:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:15,511 INFO L93 Difference]: Finished difference Result 8683 states and 14854 transitions. [2020-10-15 04:43:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:43:15,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-15 04:43:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:15,522 INFO L225 Difference]: With dead ends: 8683 [2020-10-15 04:43:15,522 INFO L226 Difference]: Without dead ends: 6041 [2020-10-15 04:43:15,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:43:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-15 04:43:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 5717. [2020-10-15 04:43:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5717 states. [2020-10-15 04:43:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 9874 transitions. [2020-10-15 04:43:15,648 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 9874 transitions. Word has length 106 [2020-10-15 04:43:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:15,648 INFO L479 AbstractCegarLoop]: Abstraction has 5717 states and 9874 transitions. [2020-10-15 04:43:15,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:43:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 9874 transitions. [2020-10-15 04:43:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 04:43:15,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:15,655 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, 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] [2020-10-15 04:43:15,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 04:43:15,655 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash -931962521, now seen corresponding path program 1 times [2020-10-15 04:43:15,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:15,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438411810] [2020-10-15 04:43:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:43:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 04:43:21,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438411810] [2020-10-15 04:43:21,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:21,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:43:21,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832712688] [2020-10-15 04:43:21,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:43:21,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:21,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:43:21,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:43:21,179 INFO L87 Difference]: Start difference. First operand 5717 states and 9874 transitions. Second operand 10 states. [2020-10-15 04:43:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:23,322 INFO L93 Difference]: Finished difference Result 8628 states and 14782 transitions. [2020-10-15 04:43:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:43:23,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-10-15 04:43:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:23,331 INFO L225 Difference]: With dead ends: 8628 [2020-10-15 04:43:23,331 INFO L226 Difference]: Without dead ends: 5986 [2020-10-15 04:43:23,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:43:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2020-10-15 04:43:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4427. [2020-10-15 04:43:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4427 states. [2020-10-15 04:43:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 7600 transitions. [2020-10-15 04:43:23,431 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 7600 transitions. Word has length 110 [2020-10-15 04:43:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:23,432 INFO L479 AbstractCegarLoop]: Abstraction has 4427 states and 7600 transitions. [2020-10-15 04:43:23,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:43:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 7600 transitions. [2020-10-15 04:43:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 04:43:23,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:23,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:23,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 04:43:23,437 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:23,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:23,437 INFO L82 PathProgramCache]: Analyzing trace with hash -535339635, now seen corresponding path program 1 times [2020-10-15 04:43:23,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:23,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948244134] [2020-10-15 04:43:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:24,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948244134] [2020-10-15 04:43:24,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:24,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:24,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411245829] [2020-10-15 04:43:24,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:24,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:24,856 INFO L87 Difference]: Start difference. First operand 4427 states and 7600 transitions. Second operand 5 states. [2020-10-15 04:43:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:26,102 INFO L93 Difference]: Finished difference Result 10142 states and 17212 transitions. [2020-10-15 04:43:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:26,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-15 04:43:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:26,110 INFO L225 Difference]: With dead ends: 10142 [2020-10-15 04:43:26,110 INFO L226 Difference]: Without dead ends: 5750 [2020-10-15 04:43:26,115 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 [2020-10-15 04:43:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2020-10-15 04:43:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 4922. [2020-10-15 04:43:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4922 states. [2020-10-15 04:43:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 8485 transitions. [2020-10-15 04:43:26,215 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 8485 transitions. Word has length 112 [2020-10-15 04:43:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:26,216 INFO L479 AbstractCegarLoop]: Abstraction has 4922 states and 8485 transitions. [2020-10-15 04:43:26,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 8485 transitions. [2020-10-15 04:43:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 04:43:26,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:26,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:26,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 04:43:26,222 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:26,223 INFO L82 PathProgramCache]: Analyzing trace with hash 418600523, now seen corresponding path program 1 times [2020-10-15 04:43:26,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:26,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067809957] [2020-10-15 04:43:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:29,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 04:43:29,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3141 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:29,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067809957] [2020-10-15 04:43:29,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:29,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:29,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625941937] [2020-10-15 04:43:29,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:29,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:29,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:29,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:29,455 INFO L87 Difference]: Start difference. First operand 4922 states and 8485 transitions. Second operand 5 states. [2020-10-15 04:43:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:30,780 INFO L93 Difference]: Finished difference Result 11117 states and 18967 transitions. [2020-10-15 04:43:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:30,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-15 04:43:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:30,788 INFO L225 Difference]: With dead ends: 11117 [2020-10-15 04:43:30,789 INFO L226 Difference]: Without dead ends: 6230 [2020-10-15 04:43:30,795 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 [2020-10-15 04:43:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-15 04:43:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 4907. [2020-10-15 04:43:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-15 04:43:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 8470 transitions. [2020-10-15 04:43:30,901 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 8470 transitions. Word has length 112 [2020-10-15 04:43:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:30,901 INFO L479 AbstractCegarLoop]: Abstraction has 4907 states and 8470 transitions. [2020-10-15 04:43:30,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 8470 transitions. [2020-10-15 04:43:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 04:43:30,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:30,908 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:30,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 04:43:30,908 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:30,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1456506175, now seen corresponding path program 1 times [2020-10-15 04:43:30,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:30,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505287608] [2020-10-15 04:43:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:43:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:43:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:33,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505287608] [2020-10-15 04:43:33,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:33,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:33,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450990897] [2020-10-15 04:43:33,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:33,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:33,067 INFO L87 Difference]: Start difference. First operand 4907 states and 8470 transitions. Second operand 5 states. [2020-10-15 04:43:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:34,359 INFO L93 Difference]: Finished difference Result 11087 states and 18937 transitions. [2020-10-15 04:43:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:34,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-15 04:43:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:34,365 INFO L225 Difference]: With dead ends: 11087 [2020-10-15 04:43:34,366 INFO L226 Difference]: Without dead ends: 6215 [2020-10-15 04:43:34,371 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 [2020-10-15 04:43:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2020-10-15 04:43:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 4907. [2020-10-15 04:43:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-15 04:43:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 8470 transitions. [2020-10-15 04:43:34,484 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 8470 transitions. Word has length 112 [2020-10-15 04:43:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:34,485 INFO L479 AbstractCegarLoop]: Abstraction has 4907 states and 8470 transitions. [2020-10-15 04:43:34,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 8470 transitions. [2020-10-15 04:43:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 04:43:34,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:34,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:34,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 04:43:34,489 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2056272859, now seen corresponding path program 1 times [2020-10-15 04:43:34,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:34,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849455415] [2020-10-15 04:43:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 04:43:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:43:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:36,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:36,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849455415] [2020-10-15 04:43:36,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:36,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:36,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390867710] [2020-10-15 04:43:36,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:36,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:36,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:36,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:36,626 INFO L87 Difference]: Start difference. First operand 4907 states and 8470 transitions. Second operand 5 states. [2020-10-15 04:43:37,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:37,880 INFO L93 Difference]: Finished difference Result 11087 states and 18937 transitions. [2020-10-15 04:43:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:37,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-15 04:43:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:37,888 INFO L225 Difference]: With dead ends: 11087 [2020-10-15 04:43:37,888 INFO L226 Difference]: Without dead ends: 6215 [2020-10-15 04:43:37,895 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 [2020-10-15 04:43:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2020-10-15 04:43:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 4907. [2020-10-15 04:43:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-15 04:43:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 8470 transitions. [2020-10-15 04:43:38,014 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 8470 transitions. Word has length 115 [2020-10-15 04:43:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:38,015 INFO L479 AbstractCegarLoop]: Abstraction has 4907 states and 8470 transitions. [2020-10-15 04:43:38,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 8470 transitions. [2020-10-15 04:43:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 04:43:38,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:38,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:38,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 04:43:38,020 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:38,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1002205011, now seen corresponding path program 1 times [2020-10-15 04:43:38,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:38,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399160941] [2020-10-15 04:43:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 04:43:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 04:43:41,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:41,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:43:41,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399160941] [2020-10-15 04:43:41,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:41,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:43:41,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144376836] [2020-10-15 04:43:41,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:43:41,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:43:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:43:41,651 INFO L87 Difference]: Start difference. First operand 4907 states and 8470 transitions. Second operand 9 states. [2020-10-15 04:43:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:46,059 INFO L93 Difference]: Finished difference Result 10365 states and 17775 transitions. [2020-10-15 04:43:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:43:46,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-15 04:43:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:46,068 INFO L225 Difference]: With dead ends: 10365 [2020-10-15 04:43:46,068 INFO L226 Difference]: Without dead ends: 7105 [2020-10-15 04:43:46,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:43:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2020-10-15 04:43:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 5821. [2020-10-15 04:43:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5821 states. [2020-10-15 04:43:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 10086 transitions. [2020-10-15 04:43:46,214 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 10086 transitions. Word has length 116 [2020-10-15 04:43:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:46,214 INFO L479 AbstractCegarLoop]: Abstraction has 5821 states and 10086 transitions. [2020-10-15 04:43:46,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:43:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 10086 transitions. [2020-10-15 04:43:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:43:46,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:46,222 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, 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] [2020-10-15 04:43:46,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 04:43:46,222 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash -99563019, now seen corresponding path program 1 times [2020-10-15 04:43:46,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:46,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668730199] [2020-10-15 04:43:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:46,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:43:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:43:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:43:51,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668730199] [2020-10-15 04:43:51,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:51,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:51,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978660016] [2020-10-15 04:43:51,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:51,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:51,327 INFO L87 Difference]: Start difference. First operand 5821 states and 10086 transitions. Second operand 5 states. [2020-10-15 04:43:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:52,563 INFO L93 Difference]: Finished difference Result 9666 states and 16545 transitions. [2020-10-15 04:43:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:52,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 04:43:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:52,573 INFO L225 Difference]: With dead ends: 9666 [2020-10-15 04:43:52,574 INFO L226 Difference]: Without dead ends: 6622 [2020-10-15 04:43:52,579 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 [2020-10-15 04:43:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6622 states. [2020-10-15 04:43:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 6187. [2020-10-15 04:43:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6187 states. [2020-10-15 04:43:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6187 states to 6187 states and 10734 transitions. [2020-10-15 04:43:52,714 INFO L78 Accepts]: Start accepts. Automaton has 6187 states and 10734 transitions. Word has length 117 [2020-10-15 04:43:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:52,715 INFO L479 AbstractCegarLoop]: Abstraction has 6187 states and 10734 transitions. [2020-10-15 04:43:52,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6187 states and 10734 transitions. [2020-10-15 04:43:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:43:52,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:52,720 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, 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] [2020-10-15 04:43:52,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 04:43:52,720 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1974636455, now seen corresponding path program 1 times [2020-10-15 04:43:52,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:52,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506812522] [2020-10-15 04:43:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:54,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:43:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:54,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:54,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:43:54,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506812522] [2020-10-15 04:43:54,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:54,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:54,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625534514] [2020-10-15 04:43:54,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:54,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:54,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:54,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:54,346 INFO L87 Difference]: Start difference. First operand 6187 states and 10734 transitions. Second operand 5 states. [2020-10-15 04:43:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:55,785 INFO L93 Difference]: Finished difference Result 13881 states and 23817 transitions. [2020-10-15 04:43:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:55,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 04:43:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:55,794 INFO L225 Difference]: With dead ends: 13881 [2020-10-15 04:43:55,795 INFO L226 Difference]: Without dead ends: 7729 [2020-10-15 04:43:55,803 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 [2020-10-15 04:43:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2020-10-15 04:43:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6871. [2020-10-15 04:43:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6871 states. [2020-10-15 04:43:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 11958 transitions. [2020-10-15 04:43:55,971 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 11958 transitions. Word has length 117 [2020-10-15 04:43:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:55,972 INFO L479 AbstractCegarLoop]: Abstraction has 6871 states and 11958 transitions. [2020-10-15 04:43:55,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 11958 transitions. [2020-10-15 04:43:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:43:55,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:55,981 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, 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] [2020-10-15 04:43:55,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 04:43:55,981 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1433107995, now seen corresponding path program 1 times [2020-10-15 04:43:55,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:55,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369072082] [2020-10-15 04:43:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:43:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3552 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:59,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:59,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:43:59,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369072082] [2020-10-15 04:43:59,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:59,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:59,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734343208] [2020-10-15 04:43:59,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:59,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:59,645 INFO L87 Difference]: Start difference. First operand 6871 states and 11958 transitions. Second operand 5 states. [2020-10-15 04:44:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:01,005 INFO L93 Difference]: Finished difference Result 15231 states and 26247 transitions. [2020-10-15 04:44:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:01,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 04:44:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:01,015 INFO L225 Difference]: With dead ends: 15231 [2020-10-15 04:44:01,015 INFO L226 Difference]: Without dead ends: 8395 [2020-10-15 04:44:01,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2020-10-15 04:44:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 6853. [2020-10-15 04:44:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6853 states. [2020-10-15 04:44:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 11940 transitions. [2020-10-15 04:44:01,173 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 11940 transitions. Word has length 117 [2020-10-15 04:44:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:01,174 INFO L479 AbstractCegarLoop]: Abstraction has 6853 states and 11940 transitions. [2020-10-15 04:44:01,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 11940 transitions. [2020-10-15 04:44:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:44:01,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:01,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-15 04:44:01,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 04:44:01,179 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:01,180 INFO L82 PathProgramCache]: Analyzing trace with hash -532351525, now seen corresponding path program 1 times [2020-10-15 04:44:01,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:01,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917252459] [2020-10-15 04:44:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:44:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2441 [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:44:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:03,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917252459] [2020-10-15 04:44:03,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:03,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:03,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788486917] [2020-10-15 04:44:03,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:03,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:03,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:03,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:03,709 INFO L87 Difference]: Start difference. First operand 6853 states and 11940 transitions. Second operand 5 states. [2020-10-15 04:44:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:05,060 INFO L93 Difference]: Finished difference Result 15195 states and 26211 transitions. [2020-10-15 04:44:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:05,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 04:44:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:05,071 INFO L225 Difference]: With dead ends: 15195 [2020-10-15 04:44:05,071 INFO L226 Difference]: Without dead ends: 8377 [2020-10-15 04:44:05,078 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 [2020-10-15 04:44:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2020-10-15 04:44:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 6853. [2020-10-15 04:44:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6853 states. [2020-10-15 04:44:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 11940 transitions. [2020-10-15 04:44:05,246 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 11940 transitions. Word has length 117 [2020-10-15 04:44:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:05,246 INFO L479 AbstractCegarLoop]: Abstraction has 6853 states and 11940 transitions. [2020-10-15 04:44:05,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 11940 transitions. [2020-10-15 04:44:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:44:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:05,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:05,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 04:44:05,252 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1011337937, now seen corresponding path program 1 times [2020-10-15 04:44:05,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:05,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630134112] [2020-10-15 04:44:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3506 [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 04:44:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 04:44:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:08,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:08,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:08,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:44:08,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:08,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:08,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:08,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630134112] [2020-10-15 04:44:08,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:08,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:44:08,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722354807] [2020-10-15 04:44:08,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:44:08,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:08,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:44:08,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:44:08,986 INFO L87 Difference]: Start difference. First operand 6853 states and 11940 transitions. Second operand 9 states. [2020-10-15 04:44:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:12,582 INFO L93 Difference]: Finished difference Result 14007 states and 24263 transitions. [2020-10-15 04:44:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:44:12,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-10-15 04:44:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:12,591 INFO L225 Difference]: With dead ends: 14007 [2020-10-15 04:44:12,591 INFO L226 Difference]: Without dead ends: 7189 [2020-10-15 04:44:12,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:44:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7189 states. [2020-10-15 04:44:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7189 to 6834. [2020-10-15 04:44:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6834 states. [2020-10-15 04:44:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 11902 transitions. [2020-10-15 04:44:12,740 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 11902 transitions. Word has length 117 [2020-10-15 04:44:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:12,741 INFO L479 AbstractCegarLoop]: Abstraction has 6834 states and 11902 transitions. [2020-10-15 04:44:12,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:44:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 11902 transitions. [2020-10-15 04:44:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:12,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:12,748 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, 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] [2020-10-15 04:44:12,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 04:44:12,749 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1085218127, now seen corresponding path program 1 times [2020-10-15 04:44:12,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:12,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885148027] [2020-10-15 04:44:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:17,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:44:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:44:17,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:44:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:44:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:17,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:17,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:44:17,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885148027] [2020-10-15 04:44:17,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:17,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:17,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330727044] [2020-10-15 04:44:17,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:17,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:17,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:17,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:17,840 INFO L87 Difference]: Start difference. First operand 6834 states and 11902 transitions. Second operand 5 states. [2020-10-15 04:44:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:19,146 INFO L93 Difference]: Finished difference Result 10994 states and 18938 transitions. [2020-10-15 04:44:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:19,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:19,155 INFO L225 Difference]: With dead ends: 10994 [2020-10-15 04:44:19,155 INFO L226 Difference]: Without dead ends: 7239 [2020-10-15 04:44:19,160 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 [2020-10-15 04:44:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7239 states. [2020-10-15 04:44:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7239 to 6810. [2020-10-15 04:44:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6810 states. [2020-10-15 04:44:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 11869 transitions. [2020-10-15 04:44:19,308 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 11869 transitions. Word has length 118 [2020-10-15 04:44:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:19,308 INFO L479 AbstractCegarLoop]: Abstraction has 6810 states and 11869 transitions. [2020-10-15 04:44:19,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 11869 transitions. [2020-10-15 04:44:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:19,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:19,315 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, 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] [2020-10-15 04:44:19,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 04:44:19,316 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1191640713, now seen corresponding path program 1 times [2020-10-15 04:44:19,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:19,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862001682] [2020-10-15 04:44:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:19,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:44:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:21,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:21,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:21,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862001682] [2020-10-15 04:44:21,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:21,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:21,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674436165] [2020-10-15 04:44:21,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:21,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:21,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:21,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:21,091 INFO L87 Difference]: Start difference. First operand 6810 states and 11869 transitions. Second operand 5 states. [2020-10-15 04:44:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:22,453 INFO L93 Difference]: Finished difference Result 15073 states and 26009 transitions. [2020-10-15 04:44:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:22,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:22,463 INFO L225 Difference]: With dead ends: 15073 [2020-10-15 04:44:22,463 INFO L226 Difference]: Without dead ends: 8298 [2020-10-15 04:44:22,470 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 [2020-10-15 04:44:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2020-10-15 04:44:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 6822. [2020-10-15 04:44:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6822 states. [2020-10-15 04:44:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 11881 transitions. [2020-10-15 04:44:22,635 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 11881 transitions. Word has length 118 [2020-10-15 04:44:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:22,635 INFO L479 AbstractCegarLoop]: Abstraction has 6822 states and 11881 transitions. [2020-10-15 04:44:22,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 11881 transitions. [2020-10-15 04:44:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:22,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:22,641 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, 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] [2020-10-15 04:44:22,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 04:44:22,641 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:22,641 INFO L82 PathProgramCache]: Analyzing trace with hash 542463737, now seen corresponding path program 1 times [2020-10-15 04:44:22,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:22,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777760777] [2020-10-15 04:44:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3834 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:44:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:26,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777760777] [2020-10-15 04:44:26,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:26,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:26,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315769502] [2020-10-15 04:44:26,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:26,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:26,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:26,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:26,580 INFO L87 Difference]: Start difference. First operand 6822 states and 11881 transitions. Second operand 5 states. [2020-10-15 04:44:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:28,008 INFO L93 Difference]: Finished difference Result 15079 states and 26015 transitions. [2020-10-15 04:44:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:28,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:28,018 INFO L225 Difference]: With dead ends: 15079 [2020-10-15 04:44:28,018 INFO L226 Difference]: Without dead ends: 8292 [2020-10-15 04:44:28,024 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 [2020-10-15 04:44:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8292 states. [2020-10-15 04:44:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8292 to 6804. [2020-10-15 04:44:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6804 states. [2020-10-15 04:44:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6804 states to 6804 states and 11863 transitions. [2020-10-15 04:44:28,173 INFO L78 Accepts]: Start accepts. Automaton has 6804 states and 11863 transitions. Word has length 118 [2020-10-15 04:44:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:28,173 INFO L479 AbstractCegarLoop]: Abstraction has 6804 states and 11863 transitions. [2020-10-15 04:44:28,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6804 states and 11863 transitions. [2020-10-15 04:44:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:28,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:28,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:44:28,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 04:44:28,178 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1598856765, now seen corresponding path program 1 times [2020-10-15 04:44:28,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:28,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708590206] [2020-10-15 04:44:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking...