/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:13:18,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:13:18,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:13:18,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:13:18,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:13:18,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:13:18,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:13:18,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:13:18,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:13:18,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:13:18,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:13:18,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:13:18,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:13:18,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:13:18,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:13:18,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:13:18,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:13:18,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:13:18,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:13:18,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:13:18,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:13:18,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:13:18,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:13:18,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:13:18,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:13:18,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:13:18,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:13:18,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:13:18,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:13:18,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:13:18,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:13:18,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:13:18,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:13:18,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:13:18,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:13:18,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:13:18,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:13:18,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:13:18,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:13:18,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:13:18,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:13:18,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:13:18,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:13:18,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:13:18,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:13:18,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:13:18,776 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:13:18,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:13:18,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:13:18,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:13:18,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:13:18,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:13:18,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:13:18,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:13:18,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:13:18,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:13:18,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:13:18,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:13:18,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:18,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:13:18,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:13:18,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:13:18,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:13:18,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:13:18,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:13:18,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:13:18,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:13:19,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:13:19,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:13:19,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:13:19,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:13:19,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:13:19,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c [2020-10-14 00:13:19,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a51594f0/2c621c18418045ccb747ecd27d50051a/FLAG5231b9d26 [2020-10-14 00:13:19,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:13:19,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c [2020-10-14 00:13:19,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a51594f0/2c621c18418045ccb747ecd27d50051a/FLAG5231b9d26 [2020-10-14 00:13:20,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a51594f0/2c621c18418045ccb747ecd27d50051a [2020-10-14 00:13:20,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:13:20,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:13:20,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:20,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:13:20,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:13:20,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501534f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20, skipping insertion in model container [2020-10-14 00:13:20,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:13:20,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:13:20,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:20,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:13:20,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:20,512 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:13:20,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20 WrapperNode [2020-10-14 00:13:20,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:20,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:13:20,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:13:20,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:13:20,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... [2020-10-14 00:13:20,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:13:20,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:13:20,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:13:20,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:13:20,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:13:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:13:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 00:13:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:13:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:13:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 00:13:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:13:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:13:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 00:13:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:13:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:13:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:13:20,862 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 00:13:21,402 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-14 00:13:21,402 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-14 00:13:21,426 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:13:21,426 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:13:21,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:21 BoogieIcfgContainer [2020-10-14 00:13:21,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:13:21,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:13:21,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:13:21,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:13:21,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:13:20" (1/3) ... [2020-10-14 00:13:21,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6165221c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:21, skipping insertion in model container [2020-10-14 00:13:21,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:20" (2/3) ... [2020-10-14 00:13:21,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6165221c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:21, skipping insertion in model container [2020-10-14 00:13:21,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:21" (3/3) ... [2020-10-14 00:13:21,457 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a.BV.c.cil.c [2020-10-14 00:13:21,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:13:21,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:13:21,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:13:21,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:13:21,529 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:13:21,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:13:21,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:13:21,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:13:21,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:13:21,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:13:21,530 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:13:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-14 00:13:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 00:13:21,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:21,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:21,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:21,570 INFO L82 PathProgramCache]: Analyzing trace with hash -214397175, now seen corresponding path program 1 times [2020-10-14 00:13:21,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:21,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488860051] [2020-10-14 00:13:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 00:13:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-14 00:13:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:22,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 00:13:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 00:13:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:13:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:22,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:13:22,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488860051] [2020-10-14 00:13:22,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:22,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:22,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067116918] [2020-10-14 00:13:22,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:22,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:22,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:22,373 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2020-10-14 00:13:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:22,490 INFO L93 Difference]: Finished difference Result 393 states and 669 transitions. [2020-10-14 00:13:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:22,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-10-14 00:13:22,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:22,509 INFO L225 Difference]: With dead ends: 393 [2020-10-14 00:13:22,509 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 00:13:22,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 00:13:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-10-14 00:13:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-14 00:13:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 336 transitions. [2020-10-14 00:13:22,596 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 336 transitions. Word has length 49 [2020-10-14 00:13:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:22,597 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 336 transitions. [2020-10-14 00:13:22,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 336 transitions. [2020-10-14 00:13:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 00:13:22,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:22,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:22,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:13:22,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash -83111160, now seen corresponding path program 1 times [2020-10-14 00:13:22,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:22,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111185019] [2020-10-14 00:13:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 00:13:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 00:13:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:22,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:13:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:13:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:22,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:22,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:22,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:22,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:22,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:13:22,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111185019] [2020-10-14 00:13:22,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:22,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:22,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266416455] [2020-10-14 00:13:22,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:22,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:22,842 INFO L87 Difference]: Start difference. First operand 223 states and 336 transitions. Second operand 3 states. [2020-10-14 00:13:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:22,910 INFO L93 Difference]: Finished difference Result 433 states and 659 transitions. [2020-10-14 00:13:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:22,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-10-14 00:13:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:22,915 INFO L225 Difference]: With dead ends: 433 [2020-10-14 00:13:22,915 INFO L226 Difference]: Without dead ends: 327 [2020-10-14 00:13:22,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-14 00:13:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2020-10-14 00:13:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-14 00:13:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 494 transitions. [2020-10-14 00:13:22,942 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 494 transitions. Word has length 65 [2020-10-14 00:13:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:22,942 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 494 transitions. [2020-10-14 00:13:22,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 494 transitions. [2020-10-14 00:13:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:13:22,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:22,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:22,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:13:22,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:22,949 INFO L82 PathProgramCache]: Analyzing trace with hash 336937436, now seen corresponding path program 1 times [2020-10-14 00:13:22,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:22,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508960456] [2020-10-14 00:13:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:23,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 00:13:23,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 00:13:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:13:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:13:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:23,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:13:23,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508960456] [2020-10-14 00:13:23,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:23,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:23,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40343537] [2020-10-14 00:13:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:23,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:23,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:23,403 INFO L87 Difference]: Start difference. First operand 327 states and 494 transitions. Second operand 3 states. [2020-10-14 00:13:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:23,470 INFO L93 Difference]: Finished difference Result 641 states and 975 transitions. [2020-10-14 00:13:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:23,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-10-14 00:13:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:23,474 INFO L225 Difference]: With dead ends: 641 [2020-10-14 00:13:23,474 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 00:13:23,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 00:13:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2020-10-14 00:13:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-14 00:13:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 653 transitions. [2020-10-14 00:13:23,505 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 653 transitions. Word has length 86 [2020-10-14 00:13:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:23,506 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 653 transitions. [2020-10-14 00:13:23,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 653 transitions. [2020-10-14 00:13:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:13:23,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:23,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:23,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:13:23,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1785636715, now seen corresponding path program 1 times [2020-10-14 00:13:23,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:23,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157043539] [2020-10-14 00:13:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:23,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:13:23,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 00:13:23,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:23,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 00:13:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 00:13:23,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:23,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:23,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:23,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:23,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:23,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:23,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 00:13:23,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157043539] [2020-10-14 00:13:23,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:23,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:23,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194052262] [2020-10-14 00:13:23,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:23,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:23,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:23,766 INFO L87 Difference]: Start difference. First operand 431 states and 653 transitions. Second operand 3 states. [2020-10-14 00:13:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:23,834 INFO L93 Difference]: Finished difference Result 537 states and 815 transitions. [2020-10-14 00:13:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:23,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-10-14 00:13:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:23,839 INFO L225 Difference]: With dead ends: 537 [2020-10-14 00:13:23,839 INFO L226 Difference]: Without dead ends: 535 [2020-10-14 00:13:23,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-14 00:13:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2020-10-14 00:13:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-14 00:13:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 813 transitions. [2020-10-14 00:13:23,858 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 813 transitions. Word has length 126 [2020-10-14 00:13:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:23,858 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 813 transitions. [2020-10-14 00:13:23,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 813 transitions. [2020-10-14 00:13:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 00:13:23,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:23,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:23,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:13:23,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:23,862 INFO L82 PathProgramCache]: Analyzing trace with hash -554646490, now seen corresponding path program 1 times [2020-10-14 00:13:23,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:23,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315031771] [2020-10-14 00:13:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:24,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:13:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 00:13:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:24,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-14 00:13:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:13:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:24,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 00:13:24,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315031771] [2020-10-14 00:13:24,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:24,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:24,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463943289] [2020-10-14 00:13:24,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:24,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:24,317 INFO L87 Difference]: Start difference. First operand 535 states and 813 transitions. Second operand 3 states. [2020-10-14 00:13:24,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:24,539 INFO L93 Difference]: Finished difference Result 1292 states and 2012 transitions. [2020-10-14 00:13:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:24,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-14 00:13:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:24,545 INFO L225 Difference]: With dead ends: 1292 [2020-10-14 00:13:24,545 INFO L226 Difference]: Without dead ends: 755 [2020-10-14 00:13:24,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-10-14 00:13:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 735. [2020-10-14 00:13:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-14 00:13:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1163 transitions. [2020-10-14 00:13:24,574 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1163 transitions. Word has length 148 [2020-10-14 00:13:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:24,574 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 1163 transitions. [2020-10-14 00:13:24,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1163 transitions. [2020-10-14 00:13:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 00:13:24,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:24,578 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:24,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:13:24,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash -742221725, now seen corresponding path program 1 times [2020-10-14 00:13:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:24,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661256654] [2020-10-14 00:13:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:25,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:25,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 00:13:25,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-14 00:13:25,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:25,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 00:13:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:13:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:25,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:25,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:25,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:25,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:25,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:13:25,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661256654] [2020-10-14 00:13:25,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:25,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:25,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673948804] [2020-10-14 00:13:25,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:25,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:25,723 INFO L87 Difference]: Start difference. First operand 735 states and 1163 transitions. Second operand 3 states. [2020-10-14 00:13:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:25,960 INFO L93 Difference]: Finished difference Result 1672 states and 2689 transitions. [2020-10-14 00:13:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:25,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-10-14 00:13:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:25,967 INFO L225 Difference]: With dead ends: 1672 [2020-10-14 00:13:25,968 INFO L226 Difference]: Without dead ends: 950 [2020-10-14 00:13:25,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-14 00:13:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 940. [2020-10-14 00:13:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-14 00:13:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1393 transitions. [2020-10-14 00:13:26,006 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1393 transitions. Word has length 164 [2020-10-14 00:13:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:26,007 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1393 transitions. [2020-10-14 00:13:26,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1393 transitions. [2020-10-14 00:13:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 00:13:26,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:26,011 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:26,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:13:26,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1039586221, now seen corresponding path program 1 times [2020-10-14 00:13:26,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:26,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350306367] [2020-10-14 00:13:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:27,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 00:13:27,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:13:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:27,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:27,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:27,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:27,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 00:13:27,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350306367] [2020-10-14 00:13:27,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:27,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:27,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941842529] [2020-10-14 00:13:27,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:27,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:27,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:27,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:27,750 INFO L87 Difference]: Start difference. First operand 940 states and 1393 transitions. Second operand 3 states. [2020-10-14 00:13:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:27,809 INFO L93 Difference]: Finished difference Result 2794 states and 4145 transitions. [2020-10-14 00:13:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:27,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2020-10-14 00:13:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:27,821 INFO L225 Difference]: With dead ends: 2794 [2020-10-14 00:13:27,822 INFO L226 Difference]: Without dead ends: 1867 [2020-10-14 00:13:27,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2020-10-14 00:13:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1865. [2020-10-14 00:13:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-14 00:13:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2753 transitions. [2020-10-14 00:13:27,889 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2753 transitions. Word has length 206 [2020-10-14 00:13:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:27,890 INFO L479 AbstractCegarLoop]: Abstraction has 1865 states and 2753 transitions. [2020-10-14 00:13:27,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2753 transitions. [2020-10-14 00:13:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 00:13:27,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:27,897 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:27,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:13:27,898 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2112878609, now seen corresponding path program 1 times [2020-10-14 00:13:27,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:27,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217224220] [2020-10-14 00:13:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:28,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 00:13:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-14 00:13:28,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:28,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 00:13:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:13:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:13:29,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:29,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:29,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 00:13:29,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217224220] [2020-10-14 00:13:29,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:29,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:29,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588371746] [2020-10-14 00:13:29,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:29,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:29,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:29,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:29,054 INFO L87 Difference]: Start difference. First operand 1865 states and 2753 transitions. Second operand 3 states. [2020-10-14 00:13:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:29,286 INFO L93 Difference]: Finished difference Result 4117 states and 6189 transitions. [2020-10-14 00:13:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:29,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2020-10-14 00:13:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:29,299 INFO L225 Difference]: With dead ends: 4117 [2020-10-14 00:13:29,300 INFO L226 Difference]: Without dead ends: 2175 [2020-10-14 00:13:29,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2020-10-14 00:13:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2020-10-14 00:13:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-10-14 00:13:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3113 transitions. [2020-10-14 00:13:29,404 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3113 transitions. Word has length 206 [2020-10-14 00:13:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:29,404 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 3113 transitions. [2020-10-14 00:13:29,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3113 transitions. [2020-10-14 00:13:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 00:13:29,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:29,415 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:29,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:13:29,416 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:29,416 INFO L82 PathProgramCache]: Analyzing trace with hash 68066186, now seen corresponding path program 1 times [2020-10-14 00:13:29,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:29,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430111601] [2020-10-14 00:13:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:30,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 00:13:31,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1596 [2020-10-14 00:13:31,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:31,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-14 00:13:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:13:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:31,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:31,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:31,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:31,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-14 00:13:31,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430111601] [2020-10-14 00:13:31,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:31,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:31,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974747107] [2020-10-14 00:13:31,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:31,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:31,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:31,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:31,157 INFO L87 Difference]: Start difference. First operand 2175 states and 3113 transitions. Second operand 3 states. [2020-10-14 00:13:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:31,405 INFO L93 Difference]: Finished difference Result 4757 states and 6939 transitions. [2020-10-14 00:13:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:31,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-10-14 00:13:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:31,420 INFO L225 Difference]: With dead ends: 4757 [2020-10-14 00:13:31,420 INFO L226 Difference]: Without dead ends: 2595 [2020-10-14 00:13:31,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-10-14 00:13:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2565. [2020-10-14 00:13:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-10-14 00:13:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3553 transitions. [2020-10-14 00:13:31,515 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3553 transitions. Word has length 234 [2020-10-14 00:13:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:31,515 INFO L479 AbstractCegarLoop]: Abstraction has 2565 states and 3553 transitions. [2020-10-14 00:13:31,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3553 transitions. [2020-10-14 00:13:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 00:13:31,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:31,524 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:31,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:13:31,524 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:31,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1944605756, now seen corresponding path program 1 times [2020-10-14 00:13:31,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:31,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340342215] [2020-10-14 00:13:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:34,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 00:13:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2910 [2020-10-14 00:13:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:34,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 00:13:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:13:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:34,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:34,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-14 00:13:34,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340342215] [2020-10-14 00:13:34,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:34,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:34,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900529717] [2020-10-14 00:13:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:34,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:34,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:34,551 INFO L87 Difference]: Start difference. First operand 2565 states and 3553 transitions. Second operand 3 states. [2020-10-14 00:13:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:34,806 INFO L93 Difference]: Finished difference Result 5547 states and 7829 transitions. [2020-10-14 00:13:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:34,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-10-14 00:13:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:34,822 INFO L225 Difference]: With dead ends: 5547 [2020-10-14 00:13:34,822 INFO L226 Difference]: Without dead ends: 2905 [2020-10-14 00:13:34,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-10-14 00:13:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2795. [2020-10-14 00:13:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-14 00:13:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3923 transitions. [2020-10-14 00:13:34,919 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3923 transitions. Word has length 234 [2020-10-14 00:13:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:34,920 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3923 transitions. [2020-10-14 00:13:34,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3923 transitions. [2020-10-14 00:13:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 00:13:34,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:34,928 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:34,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:13:34,928 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1662072959, now seen corresponding path program 2 times [2020-10-14 00:13:34,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:34,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552518300] [2020-10-14 00:13:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:39,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:39,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 00:13:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:13:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:13:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:39,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 00:13:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:13:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:40,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:40,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 00:13:40,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552518300] [2020-10-14 00:13:40,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:40,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:40,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623612215] [2020-10-14 00:13:40,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:40,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:40,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:40,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:40,053 INFO L87 Difference]: Start difference. First operand 2795 states and 3923 transitions. Second operand 3 states. [2020-10-14 00:13:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:40,352 INFO L93 Difference]: Finished difference Result 5752 states and 8084 transitions. [2020-10-14 00:13:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:40,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-10-14 00:13:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:40,373 INFO L225 Difference]: With dead ends: 5752 [2020-10-14 00:13:40,373 INFO L226 Difference]: Without dead ends: 2930 [2020-10-14 00:13:40,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-10-14 00:13:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2910. [2020-10-14 00:13:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-10-14 00:13:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3973 transitions. [2020-10-14 00:13:40,539 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3973 transitions. Word has length 250 [2020-10-14 00:13:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:40,540 INFO L479 AbstractCegarLoop]: Abstraction has 2910 states and 3973 transitions. [2020-10-14 00:13:40,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3973 transitions. [2020-10-14 00:13:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 00:13:40,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:40,558 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:40,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:13:40,559 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:40,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1331633016, now seen corresponding path program 1 times [2020-10-14 00:13:40,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:40,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147271475] [2020-10-14 00:13:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:40,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:40,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 00:13:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 00:13:40,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:40,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:13:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 00:13:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:13:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:40,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:40,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:40,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 00:13:41,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147271475] [2020-10-14 00:13:41,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:41,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:13:41,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535737298] [2020-10-14 00:13:41,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:13:41,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:41,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:13:41,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:13:41,047 INFO L87 Difference]: Start difference. First operand 2910 states and 3973 transitions. Second operand 4 states. [2020-10-14 00:13:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:41,627 INFO L93 Difference]: Finished difference Result 6884 states and 9449 transitions. [2020-10-14 00:13:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:13:41,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-14 00:13:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:41,646 INFO L225 Difference]: With dead ends: 6884 [2020-10-14 00:13:41,646 INFO L226 Difference]: Without dead ends: 2402 [2020-10-14 00:13:41,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:13:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-10-14 00:13:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2306. [2020-10-14 00:13:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2020-10-14 00:13:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3074 transitions. [2020-10-14 00:13:41,764 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3074 transitions. Word has length 258 [2020-10-14 00:13:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:41,765 INFO L479 AbstractCegarLoop]: Abstraction has 2306 states and 3074 transitions. [2020-10-14 00:13:41,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:13:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3074 transitions. [2020-10-14 00:13:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 00:13:41,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:41,776 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:41,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:13:41,777 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:41,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1477386866, now seen corresponding path program 1 times [2020-10-14 00:13:41,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:41,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934319888] [2020-10-14 00:13:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:42,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 00:13:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-14 00:13:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:42,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 00:13:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:13:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:42,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:42,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:42,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-14 00:13:43,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934319888] [2020-10-14 00:13:43,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:43,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:43,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3219760] [2020-10-14 00:13:43,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:43,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:43,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:43,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:43,008 INFO L87 Difference]: Start difference. First operand 2306 states and 3074 transitions. Second operand 3 states. [2020-10-14 00:13:43,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:43,063 INFO L93 Difference]: Finished difference Result 2856 states and 3824 transitions. [2020-10-14 00:13:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:43,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 278 [2020-10-14 00:13:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:43,075 INFO L225 Difference]: With dead ends: 2856 [2020-10-14 00:13:43,076 INFO L226 Difference]: Without dead ends: 2253 [2020-10-14 00:13:43,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-10-14 00:13:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 1705. [2020-10-14 00:13:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1705 states. [2020-10-14 00:13:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2268 transitions. [2020-10-14 00:13:43,142 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2268 transitions. Word has length 278 [2020-10-14 00:13:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:43,143 INFO L479 AbstractCegarLoop]: Abstraction has 1705 states and 2268 transitions. [2020-10-14 00:13:43,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2268 transitions. [2020-10-14 00:13:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 00:13:43,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:43,154 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:43,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:13:43,154 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:43,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2034773474, now seen corresponding path program 1 times [2020-10-14 00:13:43,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:43,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292529737] [2020-10-14 00:13:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 00:13:44,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-14 00:13:44,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 00:13:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:13:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:44,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-14 00:13:44,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292529737] [2020-10-14 00:13:44,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:44,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:44,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799757898] [2020-10-14 00:13:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:44,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:44,567 INFO L87 Difference]: Start difference. First operand 1705 states and 2268 transitions. Second operand 3 states. [2020-10-14 00:13:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:44,767 INFO L93 Difference]: Finished difference Result 3657 states and 4924 transitions. [2020-10-14 00:13:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:44,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-10-14 00:13:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:44,778 INFO L225 Difference]: With dead ends: 3657 [2020-10-14 00:13:44,778 INFO L226 Difference]: Without dead ends: 1890 [2020-10-14 00:13:44,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-10-14 00:13:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1830. [2020-10-14 00:13:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-10-14 00:13:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2428 transitions. [2020-10-14 00:13:44,840 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2428 transitions. Word has length 298 [2020-10-14 00:13:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:44,840 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2428 transitions. [2020-10-14 00:13:44,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2428 transitions. [2020-10-14 00:13:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 00:13:44,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:44,849 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 00:13:44,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:13:44,850 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1835329018, now seen corresponding path program 1 times [2020-10-14 00:13:44,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:44,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033301364] [2020-10-14 00:13:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:46,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 00:13:46,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-14 00:13:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:46,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 00:13:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:13:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:46,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:46,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:46,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:46,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2020-10-14 00:13:46,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033301364] [2020-10-14 00:13:46,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:46,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:46,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243751698] [2020-10-14 00:13:46,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:46,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:46,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:46,532 INFO L87 Difference]: Start difference. First operand 1830 states and 2428 transitions. Second operand 3 states. [2020-10-14 00:13:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:46,742 INFO L93 Difference]: Finished difference Result 3882 states and 5204 transitions. [2020-10-14 00:13:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:46,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 350 [2020-10-14 00:13:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:46,752 INFO L225 Difference]: With dead ends: 3882 [2020-10-14 00:13:46,752 INFO L226 Difference]: Without dead ends: 2000 [2020-10-14 00:13:46,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-10-14 00:13:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1965. [2020-10-14 00:13:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-14 00:13:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2608 transitions. [2020-10-14 00:13:46,823 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2608 transitions. Word has length 350 [2020-10-14 00:13:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:46,823 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 2608 transitions. [2020-10-14 00:13:46,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2608 transitions. [2020-10-14 00:13:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 00:13:46,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:46,833 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:46,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:13:46,834 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1625965864, now seen corresponding path program 1 times [2020-10-14 00:13:46,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:46,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280780695] [2020-10-14 00:13:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:49,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 00:13:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:13:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2880 [2020-10-14 00:13:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:49,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 00:13:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 00:13:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:49,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:49,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:49,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:49,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:49,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:49,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2020-10-14 00:13:50,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280780695] [2020-10-14 00:13:50,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:50,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:50,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173522194] [2020-10-14 00:13:50,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:50,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:50,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:50,372 INFO L87 Difference]: Start difference. First operand 1965 states and 2608 transitions. Second operand 3 states. [2020-10-14 00:13:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:50,468 INFO L93 Difference]: Finished difference Result 5859 states and 7775 transitions. [2020-10-14 00:13:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:50,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-10-14 00:13:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:50,486 INFO L225 Difference]: With dead ends: 5859 [2020-10-14 00:13:50,486 INFO L226 Difference]: Without dead ends: 3907 [2020-10-14 00:13:50,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2020-10-14 00:13:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3905. [2020-10-14 00:13:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3905 states. [2020-10-14 00:13:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 5173 transitions. [2020-10-14 00:13:50,601 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 5173 transitions. Word has length 388 [2020-10-14 00:13:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:50,602 INFO L479 AbstractCegarLoop]: Abstraction has 3905 states and 5173 transitions. [2020-10-14 00:13:50,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 5173 transitions. [2020-10-14 00:13:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 00:13:50,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:50,617 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:50,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:13:50,618 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1264508653, now seen corresponding path program 1 times [2020-10-14 00:13:50,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:50,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860999809] [2020-10-14 00:13:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-14 00:13:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-10-14 00:13:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 00:13:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 00:13:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:52,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2020-10-14 00:13:52,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860999809] [2020-10-14 00:13:52,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:52,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:52,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009365026] [2020-10-14 00:13:52,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:52,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:52,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:52,554 INFO L87 Difference]: Start difference. First operand 3905 states and 5173 transitions. Second operand 3 states. [2020-10-14 00:13:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:52,700 INFO L93 Difference]: Finished difference Result 11634 states and 15400 transitions. [2020-10-14 00:13:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:52,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 389 [2020-10-14 00:13:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:52,721 INFO L225 Difference]: With dead ends: 11634 [2020-10-14 00:13:52,721 INFO L226 Difference]: Without dead ends: 7742 [2020-10-14 00:13:52,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2020-10-14 00:13:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 7740. [2020-10-14 00:13:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7740 states. [2020-10-14 00:13:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 10233 transitions. [2020-10-14 00:13:52,951 INFO L78 Accepts]: Start accepts. Automaton has 7740 states and 10233 transitions. Word has length 389 [2020-10-14 00:13:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:52,952 INFO L479 AbstractCegarLoop]: Abstraction has 7740 states and 10233 transitions. [2020-10-14 00:13:52,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7740 states and 10233 transitions. [2020-10-14 00:13:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 00:13:52,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:52,977 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:52,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:13:52,978 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:52,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:52,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1150207766, now seen corresponding path program 1 times [2020-10-14 00:13:52,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:52,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559035996] [2020-10-14 00:13:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-14 00:13:54,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1953 [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 00:13:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:55,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:55,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:55,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:55,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2020-10-14 00:13:55,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559035996] [2020-10-14 00:13:55,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:55,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:55,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472179282] [2020-10-14 00:13:55,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:55,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:55,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:55,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:55,168 INFO L87 Difference]: Start difference. First operand 7740 states and 10233 transitions. Second operand 3 states. [2020-10-14 00:13:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:55,452 INFO L93 Difference]: Finished difference Result 23184 states and 30645 transitions. [2020-10-14 00:13:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:55,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-10-14 00:13:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:55,484 INFO L225 Difference]: With dead ends: 23184 [2020-10-14 00:13:55,485 INFO L226 Difference]: Without dead ends: 15457 [2020-10-14 00:13:55,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15457 states. [2020-10-14 00:13:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15457 to 11620. [2020-10-14 00:13:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11620 states. [2020-10-14 00:13:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11620 states to 11620 states and 15358 transitions. [2020-10-14 00:13:55,810 INFO L78 Accepts]: Start accepts. Automaton has 11620 states and 15358 transitions. Word has length 391 [2020-10-14 00:13:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:55,811 INFO L479 AbstractCegarLoop]: Abstraction has 11620 states and 15358 transitions. [2020-10-14 00:13:55,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 11620 states and 15358 transitions. [2020-10-14 00:13:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-14 00:13:55,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:55,836 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:55,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:13:55,837 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:55,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1387703079, now seen corresponding path program 1 times [2020-10-14 00:13:55,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:55,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576831231] [2020-10-14 00:13:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:57,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-14 00:13:57,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-14 00:13:57,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:57,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 00:13:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 00:13:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:57,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:57,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:57,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 1112 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2020-10-14 00:13:57,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576831231] [2020-10-14 00:13:57,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:57,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:57,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405957129] [2020-10-14 00:13:57,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:57,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:57,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:57,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:57,637 INFO L87 Difference]: Start difference. First operand 11620 states and 15358 transitions. Second operand 3 states. [2020-10-14 00:13:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:57,881 INFO L93 Difference]: Finished difference Result 21279 states and 28120 transitions. [2020-10-14 00:13:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:57,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-10-14 00:13:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:57,921 INFO L225 Difference]: With dead ends: 21279 [2020-10-14 00:13:57,922 INFO L226 Difference]: Without dead ends: 15477 [2020-10-14 00:13:57,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15477 states. [2020-10-14 00:13:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15477 to 15475. [2020-10-14 00:13:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15475 states. [2020-10-14 00:13:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15475 states to 15475 states and 20438 transitions. [2020-10-14 00:13:58,275 INFO L78 Accepts]: Start accepts. Automaton has 15475 states and 20438 transitions. Word has length 392 [2020-10-14 00:13:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:58,276 INFO L479 AbstractCegarLoop]: Abstraction has 15475 states and 20438 transitions. [2020-10-14 00:13:58,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15475 states and 20438 transitions. [2020-10-14 00:13:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-14 00:13:58,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:58,311 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:58,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:13:58,311 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2103880174, now seen corresponding path program 1 times [2020-10-14 00:13:58,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:58,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523417248] [2020-10-14 00:13:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-14 00:13:59,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-14 00:13:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 00:13:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 00:13:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:59,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1111 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2020-10-14 00:13:59,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523417248] [2020-10-14 00:13:59,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:59,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:59,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131840693] [2020-10-14 00:13:59,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:59,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:59,679 INFO L87 Difference]: Start difference. First operand 15475 states and 20438 transitions. Second operand 3 states. [2020-10-14 00:13:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:59,992 INFO L93 Difference]: Finished difference Result 28984 states and 38280 transitions. [2020-10-14 00:13:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:59,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-10-14 00:13:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:00,036 INFO L225 Difference]: With dead ends: 28984 [2020-10-14 00:14:00,036 INFO L226 Difference]: Without dead ends: 19332 [2020-10-14 00:14:00,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19332 states. [2020-10-14 00:14:00,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19332 to 19330. [2020-10-14 00:14:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19330 states. [2020-10-14 00:14:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19330 states to 19330 states and 25528 transitions. [2020-10-14 00:14:00,628 INFO L78 Accepts]: Start accepts. Automaton has 19330 states and 25528 transitions. Word has length 392 [2020-10-14 00:14:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:00,629 INFO L479 AbstractCegarLoop]: Abstraction has 19330 states and 25528 transitions. [2020-10-14 00:14:00,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19330 states and 25528 transitions. [2020-10-14 00:14:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-14 00:14:00,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:00,658 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 00:14:00,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:14:00,658 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash 450521256, now seen corresponding path program 1 times [2020-10-14 00:14:00,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:00,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913946827] [2020-10-14 00:14:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 00:14:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:14:01,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2020-10-14 00:14:01,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913946827] [2020-10-14 00:14:01,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:01,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:14:01,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440960580] [2020-10-14 00:14:01,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:14:01,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:01,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:14:01,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:01,604 INFO L87 Difference]: Start difference. First operand 19330 states and 25528 transitions. Second operand 3 states. [2020-10-14 00:14:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:02,187 INFO L93 Difference]: Finished difference Result 32177 states and 42689 transitions. [2020-10-14 00:14:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:14:02,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 396 [2020-10-14 00:14:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:02,222 INFO L225 Difference]: With dead ends: 32177 [2020-10-14 00:14:02,222 INFO L226 Difference]: Without dead ends: 20300 [2020-10-14 00:14:02,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20300 states. [2020-10-14 00:14:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20300 to 20200. [2020-10-14 00:14:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20200 states. [2020-10-14 00:14:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20200 states to 20200 states and 26728 transitions. [2020-10-14 00:14:02,699 INFO L78 Accepts]: Start accepts. Automaton has 20200 states and 26728 transitions. Word has length 396 [2020-10-14 00:14:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:02,699 INFO L479 AbstractCegarLoop]: Abstraction has 20200 states and 26728 transitions. [2020-10-14 00:14:02,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 20200 states and 26728 transitions. [2020-10-14 00:14:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-14 00:14:02,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:02,723 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:02,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:14:02,724 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1643493371, now seen corresponding path program 1 times [2020-10-14 00:14:02,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:02,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009475235] [2020-10-14 00:14:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 00:14:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:14:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 560 proven. 26 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2020-10-14 00:14:04,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009475235] [2020-10-14 00:14:04,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:04,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:04,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935800058] [2020-10-14 00:14:04,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:04,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:04,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:04,506 INFO L87 Difference]: Start difference. First operand 20200 states and 26728 transitions. Second operand 4 states. [2020-10-14 00:14:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:05,146 INFO L93 Difference]: Finished difference Result 45657 states and 61431 transitions. [2020-10-14 00:14:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:14:05,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-10-14 00:14:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:05,188 INFO L225 Difference]: With dead ends: 45657 [2020-10-14 00:14:05,188 INFO L226 Difference]: Without dead ends: 24920 [2020-10-14 00:14:05,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24920 states. [2020-10-14 00:14:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24920 to 22074. [2020-10-14 00:14:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22074 states. [2020-10-14 00:14:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22074 states to 22074 states and 29832 transitions. [2020-10-14 00:14:05,753 INFO L78 Accepts]: Start accepts. Automaton has 22074 states and 29832 transitions. Word has length 422 [2020-10-14 00:14:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:05,754 INFO L479 AbstractCegarLoop]: Abstraction has 22074 states and 29832 transitions. [2020-10-14 00:14:05,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22074 states and 29832 transitions. [2020-10-14 00:14:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-14 00:14:05,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:05,780 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:05,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:14:05,781 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1318969793, now seen corresponding path program 1 times [2020-10-14 00:14:05,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:05,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223642511] [2020-10-14 00:14:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:10,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:10,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 00:14:10,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:14:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:14:10,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:10,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:14:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 427 [2020-10-14 00:14:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:11,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2412 backedges. 402 proven. 328 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-10-14 00:14:11,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223642511] [2020-10-14 00:14:11,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:11,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:11,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562179531] [2020-10-14 00:14:11,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:11,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:11,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:11,906 INFO L87 Difference]: Start difference. First operand 22074 states and 29832 transitions. Second operand 5 states. [2020-10-14 00:14:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:13,230 INFO L93 Difference]: Finished difference Result 66101 states and 89354 transitions. [2020-10-14 00:14:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:13,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 454 [2020-10-14 00:14:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:13,290 INFO L225 Difference]: With dead ends: 66101 [2020-10-14 00:14:13,291 INFO L226 Difference]: Without dead ends: 44314 [2020-10-14 00:14:13,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44314 states. [2020-10-14 00:14:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44314 to 44157. [2020-10-14 00:14:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44157 states. [2020-10-14 00:14:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44157 states to 44157 states and 59728 transitions. [2020-10-14 00:14:14,121 INFO L78 Accepts]: Start accepts. Automaton has 44157 states and 59728 transitions. Word has length 454 [2020-10-14 00:14:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:14,121 INFO L479 AbstractCegarLoop]: Abstraction has 44157 states and 59728 transitions. [2020-10-14 00:14:14,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 44157 states and 59728 transitions. [2020-10-14 00:14:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-14 00:14:14,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:14,169 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:14,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:14:14,169 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2054573845, now seen corresponding path program 1 times [2020-10-14 00:14:14,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:14,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794681970] [2020-10-14 00:14:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-14 00:14:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:14:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2412 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 2071 trivial. 0 not checked. [2020-10-14 00:14:19,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794681970] [2020-10-14 00:14:19,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:19,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:14:19,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905831874] [2020-10-14 00:14:19,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:14:19,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:19,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:14:19,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:19,350 INFO L87 Difference]: Start difference. First operand 44157 states and 59728 transitions. Second operand 3 states. [2020-10-14 00:14:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:19,982 INFO L93 Difference]: Finished difference Result 66007 states and 89204 transitions. [2020-10-14 00:14:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:14:19,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2020-10-14 00:14:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:20,029 INFO L225 Difference]: With dead ends: 66007 [2020-10-14 00:14:20,030 INFO L226 Difference]: Without dead ends: 44070 [2020-10-14 00:14:20,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44070 states. [2020-10-14 00:14:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44070 to 44061. [2020-10-14 00:14:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44061 states. [2020-10-14 00:14:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44061 states to 44061 states and 59484 transitions. [2020-10-14 00:14:21,038 INFO L78 Accepts]: Start accepts. Automaton has 44061 states and 59484 transitions. Word has length 455 [2020-10-14 00:14:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:21,039 INFO L479 AbstractCegarLoop]: Abstraction has 44061 states and 59484 transitions. [2020-10-14 00:14:21,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 44061 states and 59484 transitions. [2020-10-14 00:14:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-14 00:14:21,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:21,075 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:14:21,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:14:21,076 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:21,076 INFO L82 PathProgramCache]: Analyzing trace with hash -934956166, now seen corresponding path program 1 times [2020-10-14 00:14:21,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:21,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466427089] [2020-10-14 00:14:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:14:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 406 [2020-10-14 00:14:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2789 backedges. 636 proven. 452 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2020-10-14 00:14:27,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466427089] [2020-10-14 00:14:27,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:27,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:27,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555046470] [2020-10-14 00:14:27,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:27,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:27,164 INFO L87 Difference]: Start difference. First operand 44061 states and 59484 transitions. Second operand 5 states. [2020-10-14 00:14:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:28,822 INFO L93 Difference]: Finished difference Result 90088 states and 120675 transitions. [2020-10-14 00:14:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:28,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2020-10-14 00:14:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:28,896 INFO L225 Difference]: With dead ends: 90088 [2020-10-14 00:14:28,896 INFO L226 Difference]: Without dead ends: 67941 [2020-10-14 00:14:28,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67941 states. [2020-10-14 00:14:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67941 to 64592. [2020-10-14 00:14:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64592 states. [2020-10-14 00:14:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64592 states to 64592 states and 85004 transitions. [2020-10-14 00:14:30,312 INFO L78 Accepts]: Start accepts. Automaton has 64592 states and 85004 transitions. Word has length 494 [2020-10-14 00:14:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:30,313 INFO L479 AbstractCegarLoop]: Abstraction has 64592 states and 85004 transitions. [2020-10-14 00:14:30,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 64592 states and 85004 transitions. [2020-10-14 00:14:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-14 00:14:30,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:30,365 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:30,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:14:30,366 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash -770343937, now seen corresponding path program 2 times [2020-10-14 00:14:30,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:30,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750782291] [2020-10-14 00:14:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-14 00:14:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:35,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3166 backedges. 609 proven. 642 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2020-10-14 00:14:37,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750782291] [2020-10-14 00:14:37,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:37,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:37,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092619340] [2020-10-14 00:14:37,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:37,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:37,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:37,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:37,559 INFO L87 Difference]: Start difference. First operand 64592 states and 85004 transitions. Second operand 5 states. [2020-10-14 00:14:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:39,752 INFO L93 Difference]: Finished difference Result 137748 states and 180083 transitions. [2020-10-14 00:14:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:39,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 522 [2020-10-14 00:14:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:39,850 INFO L225 Difference]: With dead ends: 137748 [2020-10-14 00:14:39,851 INFO L226 Difference]: Without dead ends: 95068 [2020-10-14 00:14:39,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95068 states. [2020-10-14 00:14:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95068 to 84567. [2020-10-14 00:14:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84567 states. [2020-10-14 00:14:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84567 states to 84567 states and 111098 transitions. [2020-10-14 00:14:41,783 INFO L78 Accepts]: Start accepts. Automaton has 84567 states and 111098 transitions. Word has length 522 [2020-10-14 00:14:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:41,783 INFO L479 AbstractCegarLoop]: Abstraction has 84567 states and 111098 transitions. [2020-10-14 00:14:41,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 84567 states and 111098 transitions. [2020-10-14 00:14:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-14 00:14:41,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:41,867 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:41,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:14:41,867 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash 762128424, now seen corresponding path program 1 times [2020-10-14 00:14:41,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:41,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302770585] [2020-10-14 00:14:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 00:14:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:14:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:42,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2020-10-14 00:14:42,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302770585] [2020-10-14 00:14:42,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:42,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:14:42,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883324570] [2020-10-14 00:14:42,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:14:42,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:14:42,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:42,962 INFO L87 Difference]: Start difference. First operand 84567 states and 111098 transitions. Second operand 3 states. [2020-10-14 00:14:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:44,550 INFO L93 Difference]: Finished difference Result 179318 states and 236921 transitions. [2020-10-14 00:14:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:14:44,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 524 [2020-10-14 00:14:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:44,663 INFO L225 Difference]: With dead ends: 179318 [2020-10-14 00:14:44,663 INFO L226 Difference]: Without dead ends: 93559 [2020-10-14 00:14:44,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93559 states. [2020-10-14 00:14:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93559 to 91537. [2020-10-14 00:14:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91537 states. [2020-10-14 00:14:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91537 states to 91537 states and 121143 transitions. [2020-10-14 00:14:49,023 INFO L78 Accepts]: Start accepts. Automaton has 91537 states and 121143 transitions. Word has length 524 [2020-10-14 00:14:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:49,023 INFO L479 AbstractCegarLoop]: Abstraction has 91537 states and 121143 transitions. [2020-10-14 00:14:49,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 91537 states and 121143 transitions. [2020-10-14 00:14:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-14 00:14:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:49,094 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:49,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:14:49,095 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:49,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1388106304, now seen corresponding path program 1 times [2020-10-14 00:14:49,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:49,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66208794] [2020-10-14 00:14:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 00:14:54,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:14:54,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:14:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:54,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 807 proven. 0 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2020-10-14 00:14:54,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66208794] [2020-10-14 00:14:54,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:54,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:14:54,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340412293] [2020-10-14 00:14:54,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:14:54,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:14:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:54,274 INFO L87 Difference]: Start difference. First operand 91537 states and 121143 transitions. Second operand 3 states. [2020-10-14 00:14:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:56,103 INFO L93 Difference]: Finished difference Result 184673 states and 244141 transitions. [2020-10-14 00:14:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:14:56,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 524 [2020-10-14 00:14:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:56,203 INFO L225 Difference]: With dead ends: 184673 [2020-10-14 00:14:56,203 INFO L226 Difference]: Without dead ends: 93149 [2020-10-14 00:14:56,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93149 states. [2020-10-14 00:14:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93149 to 90922. [2020-10-14 00:14:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90922 states. [2020-10-14 00:14:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90922 states to 90922 states and 119298 transitions. [2020-10-14 00:14:58,019 INFO L78 Accepts]: Start accepts. Automaton has 90922 states and 119298 transitions. Word has length 524 [2020-10-14 00:14:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:58,019 INFO L479 AbstractCegarLoop]: Abstraction has 90922 states and 119298 transitions. [2020-10-14 00:14:58,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 90922 states and 119298 transitions. [2020-10-14 00:14:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-14 00:14:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:58,093 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:58,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:14:58,094 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash -477772663, now seen corresponding path program 1 times [2020-10-14 00:14:58,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:58,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076404860] [2020-10-14 00:14:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-14 00:15:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:15:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5960 [2020-10-14 00:15:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:04,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:15:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:15:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 440 [2020-10-14 00:15:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:04,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:04,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 785 proven. 330 refuted. 0 times theorem prover too weak. 2239 trivial. 0 not checked. [2020-10-14 00:15:05,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076404860] [2020-10-14 00:15:05,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:05,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:15:05,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085426595] [2020-10-14 00:15:05,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:15:05,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:05,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:15:05,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:15:05,385 INFO L87 Difference]: Start difference. First operand 90922 states and 119298 transitions. Second operand 5 states. [2020-10-14 00:15:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:08,286 INFO L93 Difference]: Finished difference Result 184421 states and 241005 transitions. [2020-10-14 00:15:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:15:08,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 534 [2020-10-14 00:15:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:08,421 INFO L225 Difference]: With dead ends: 184421 [2020-10-14 00:15:08,421 INFO L226 Difference]: Without dead ends: 117764 [2020-10-14 00:15:08,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:15:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117764 states. [2020-10-14 00:15:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117764 to 112907. [2020-10-14 00:15:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112907 states. [2020-10-14 00:15:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112907 states to 112907 states and 147958 transitions. [2020-10-14 00:15:11,349 INFO L78 Accepts]: Start accepts. Automaton has 112907 states and 147958 transitions. Word has length 534 [2020-10-14 00:15:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:11,350 INFO L479 AbstractCegarLoop]: Abstraction has 112907 states and 147958 transitions. [2020-10-14 00:15:11,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:15:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 112907 states and 147958 transitions. [2020-10-14 00:15:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-14 00:15:11,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:11,448 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:11,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:15:11,448 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash 378585793, now seen corresponding path program 1 times [2020-10-14 00:15:11,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:11,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252336034] [2020-10-14 00:15:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:15:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:16,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:16,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 780 proven. 0 refuted. 0 times theorem prover too weak. 2612 trivial. 0 not checked. [2020-10-14 00:15:16,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252336034] [2020-10-14 00:15:16,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:15:16,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:15:16,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272905154] [2020-10-14 00:15:16,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:15:16,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:16,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:15:16,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:15:16,614 INFO L87 Difference]: Start difference. First operand 112907 states and 147958 transitions. Second operand 3 states. [2020-10-14 00:15:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:19,941 INFO L93 Difference]: Finished difference Result 233646 states and 305004 transitions. [2020-10-14 00:15:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:15:19,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2020-10-14 00:15:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:20,059 INFO L225 Difference]: With dead ends: 233646 [2020-10-14 00:15:20,060 INFO L226 Difference]: Without dead ends: 112592 [2020-10-14 00:15:20,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:15:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112592 states. [2020-10-14 00:15:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112592 to 112592. [2020-10-14 00:15:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112592 states. [2020-10-14 00:15:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112592 states to 112592 states and 147269 transitions. [2020-10-14 00:15:22,754 INFO L78 Accepts]: Start accepts. Automaton has 112592 states and 147269 transitions. Word has length 535 [2020-10-14 00:15:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:22,755 INFO L479 AbstractCegarLoop]: Abstraction has 112592 states and 147269 transitions. [2020-10-14 00:15:22,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:15:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 112592 states and 147269 transitions. [2020-10-14 00:15:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-14 00:15:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:22,859 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:15:22,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:15:22,860 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:22,860 INFO L82 PathProgramCache]: Analyzing trace with hash -967333722, now seen corresponding path program 1 times [2020-10-14 00:15:22,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:22,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296324330] [2020-10-14 00:15:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:27,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:27,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-14 00:15:27,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:15:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:15:27,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:27,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:15:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:15:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 468 [2020-10-14 00:15:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:28,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:28,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3547 backedges. 654 proven. 668 refuted. 0 times theorem prover too weak. 2225 trivial. 0 not checked. [2020-10-14 00:15:30,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296324330] [2020-10-14 00:15:30,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:30,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:15:30,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347347049] [2020-10-14 00:15:30,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:15:30,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:15:30,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:15:30,404 INFO L87 Difference]: Start difference. First operand 112592 states and 147269 transitions. Second operand 5 states. [2020-10-14 00:15:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:33,899 INFO L93 Difference]: Finished difference Result 242749 states and 316844 transitions. [2020-10-14 00:15:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:15:33,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 548 [2020-10-14 00:15:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:34,098 INFO L225 Difference]: With dead ends: 242749 [2020-10-14 00:15:34,098 INFO L226 Difference]: Without dead ends: 140092 [2020-10-14 00:15:34,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:15:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140092 states. [2020-10-14 00:15:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140092 to 134357. [2020-10-14 00:15:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134357 states. [2020-10-14 00:15:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134357 states to 134357 states and 174429 transitions. [2020-10-14 00:15:37,455 INFO L78 Accepts]: Start accepts. Automaton has 134357 states and 174429 transitions. Word has length 548 [2020-10-14 00:15:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:37,456 INFO L479 AbstractCegarLoop]: Abstraction has 134357 states and 174429 transitions. [2020-10-14 00:15:37,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:15:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 134357 states and 174429 transitions. [2020-10-14 00:15:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 00:15:37,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:37,579 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 15, 15, 13, 13, 11, 11, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 00:15:37,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:15:37,579 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1353347804, now seen corresponding path program 1 times [2020-10-14 00:15:37,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:37,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553764609] [2020-10-14 00:15:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:15:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 00:15:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-14 00:15:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:42,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:42,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:42,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:15:42,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:42,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:15:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3541 backedges. 1690 proven. 0 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2020-10-14 00:15:43,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553764609] [2020-10-14 00:15:43,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:15:43,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:15:43,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608934414] [2020-10-14 00:15:43,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:15:43,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:15:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:15:43,217 INFO L87 Difference]: Start difference. First operand 134357 states and 174429 transitions. Second operand 3 states. [2020-10-14 00:15:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:15:45,867 INFO L93 Difference]: Finished difference Result 227863 states and 295567 transitions. [2020-10-14 00:15:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:15:45,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 549 [2020-10-14 00:15:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:15:46,026 INFO L225 Difference]: With dead ends: 227863 [2020-10-14 00:15:46,027 INFO L226 Difference]: Without dead ends: 147591 [2020-10-14 00:15:46,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:15:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147591 states. [2020-10-14 00:15:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147591 to 147589. [2020-10-14 00:15:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147589 states. [2020-10-14 00:15:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147589 states to 147589 states and 191395 transitions. [2020-10-14 00:15:52,471 INFO L78 Accepts]: Start accepts. Automaton has 147589 states and 191395 transitions. Word has length 549 [2020-10-14 00:15:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:15:52,472 INFO L479 AbstractCegarLoop]: Abstraction has 147589 states and 191395 transitions. [2020-10-14 00:15:52,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:15:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 147589 states and 191395 transitions. [2020-10-14 00:15:52,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 00:15:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:15:52,619 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 15, 15, 13, 13, 11, 11, 8, 8, 8, 8, 4, 4, 4, 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, 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] [2020-10-14 00:15:52,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:15:52,619 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:15:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:15:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1817260360, now seen corresponding path program 1 times [2020-10-14 00:15:52,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:15:52,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639113477] [2020-10-14 00:15:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:15:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:57,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:57,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-14 00:15:57,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:15:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 467 [2020-10-14 00:15:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:15:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:15:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:15:57,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:15:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:15:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:15:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:15:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:15:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3541 backedges. 662 proven. 642 refuted. 0 times theorem prover too weak. 2237 trivial. 0 not checked. [2020-10-14 00:15:58,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639113477] [2020-10-14 00:15:58,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:15:58,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:15:58,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53386037] [2020-10-14 00:15:58,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:15:58,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:15:58,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:15:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:15:58,986 INFO L87 Difference]: Start difference. First operand 147589 states and 191395 transitions. Second operand 5 states. [2020-10-14 00:16:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:16:03,410 INFO L93 Difference]: Finished difference Result 321797 states and 416874 transitions. [2020-10-14 00:16:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:16:03,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 549 [2020-10-14 00:16:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:16:03,623 INFO L225 Difference]: With dead ends: 321797 [2020-10-14 00:16:03,623 INFO L226 Difference]: Without dead ends: 178999 [2020-10-14 00:16:03,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:16:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178999 states. [2020-10-14 00:16:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178999 to 170466. [2020-10-14 00:16:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170466 states. [2020-10-14 00:16:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170466 states to 170466 states and 219391 transitions. [2020-10-14 00:16:08,685 INFO L78 Accepts]: Start accepts. Automaton has 170466 states and 219391 transitions. Word has length 549 [2020-10-14 00:16:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:16:08,686 INFO L479 AbstractCegarLoop]: Abstraction has 170466 states and 219391 transitions. [2020-10-14 00:16:08,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:16:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 170466 states and 219391 transitions. [2020-10-14 00:16:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-14 00:16:08,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:16:08,850 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:16:08,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:16:08,851 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:16:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:16:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash -397381307, now seen corresponding path program 2 times [2020-10-14 00:16:08,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:16:08,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612344954] [2020-10-14 00:16:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:16:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-14 00:16:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:16:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-14 00:16:14,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:16:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 00:16:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:16:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:16:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:16:14,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:14,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:16:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:16:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:16:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3567 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 2613 trivial. 0 not checked. [2020-10-14 00:16:14,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612344954] [2020-10-14 00:16:14,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:16:14,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:16:14,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034778046] [2020-10-14 00:16:14,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:16:14,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:16:14,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:16:14,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:16:14,175 INFO L87 Difference]: Start difference. First operand 170466 states and 219391 transitions. Second operand 3 states. [2020-10-14 00:16:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:16:17,805 INFO L93 Difference]: Finished difference Result 348909 states and 447518 transitions. [2020-10-14 00:16:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:16:17,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 552 [2020-10-14 00:16:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:16:18,000 INFO L225 Difference]: With dead ends: 348909 [2020-10-14 00:16:18,000 INFO L226 Difference]: Without dead ends: 174177 [2020-10-14 00:16:18,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:16:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174177 states. [2020-10-14 00:16:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174177 to 170341. [2020-10-14 00:16:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170341 states. [2020-10-14 00:16:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170341 states to 170341 states and 218033 transitions. [2020-10-14 00:16:22,885 INFO L78 Accepts]: Start accepts. Automaton has 170341 states and 218033 transitions. Word has length 552 [2020-10-14 00:16:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:16:22,885 INFO L479 AbstractCegarLoop]: Abstraction has 170341 states and 218033 transitions. [2020-10-14 00:16:22,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:16:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 170341 states and 218033 transitions. [2020-10-14 00:16:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-14 00:16:23,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:16:23,035 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:16:23,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:16:23,035 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:16:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:16:23,035 INFO L82 PathProgramCache]: Analyzing trace with hash -11299787, now seen corresponding path program 3 times [2020-10-14 00:16:23,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:16:23,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951291391] [2020-10-14 00:16:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:16:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:16:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:16:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-14 00:16:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:16:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:28,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:16:28,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:16:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:16:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 2032 proven. 317 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2020-10-14 00:16:28,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951291391] [2020-10-14 00:16:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:16:28,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:16:28,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081889627] [2020-10-14 00:16:28,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:16:28,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:16:28,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:16:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:16:28,758 INFO L87 Difference]: Start difference. First operand 170341 states and 218033 transitions. Second operand 5 states. [2020-10-14 00:16:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:16:33,427 INFO L93 Difference]: Finished difference Result 327461 states and 418386 transitions. [2020-10-14 00:16:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:16:33,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 564 [2020-10-14 00:16:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:16:33,624 INFO L225 Difference]: With dead ends: 327461 [2020-10-14 00:16:33,624 INFO L226 Difference]: Without dead ends: 183856 [2020-10-14 00:16:33,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:16:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183856 states. [2020-10-14 00:16:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183856 to 174586. [2020-10-14 00:16:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174586 states. [2020-10-14 00:16:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174586 states to 174586 states and 223179 transitions. [2020-10-14 00:16:38,682 INFO L78 Accepts]: Start accepts. Automaton has 174586 states and 223179 transitions. Word has length 564 [2020-10-14 00:16:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:16:38,683 INFO L479 AbstractCegarLoop]: Abstraction has 174586 states and 223179 transitions. [2020-10-14 00:16:38,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:16:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 174586 states and 223179 transitions. [2020-10-14 00:16:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-14 00:16:38,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:16:38,851 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 18, 16, 16, 14, 14, 12, 12, 10, 10, 10, 10, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:16:38,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:16:38,852 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:16:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:16:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -431913123, now seen corresponding path program 1 times [2020-10-14 00:16:38,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:16:38,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183430784] [2020-10-14 00:16:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:16:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:40,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 287 [2020-10-14 00:16:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:16:40,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:16:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:41,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:16:41,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:16:41,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:16:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:16:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:16:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3745 backedges. 2212 proven. 0 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2020-10-14 00:16:41,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183430784] [2020-10-14 00:16:41,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:16:41,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:16:41,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184064531] [2020-10-14 00:16:41,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:16:41,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:16:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:16:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:16:41,109 INFO L87 Difference]: Start difference. First operand 174586 states and 223179 transitions. Second operand 3 states. [2020-10-14 00:16:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:16:46,881 INFO L93 Difference]: Finished difference Result 353709 states and 452037 transitions. [2020-10-14 00:16:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:16:46,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 570 [2020-10-14 00:16:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:16:47,126 INFO L225 Difference]: With dead ends: 353709 [2020-10-14 00:16:47,126 INFO L226 Difference]: Without dead ends: 178375 [2020-10-14 00:16:47,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:16:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178375 states. [2020-10-14 00:16:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178375 to 174189. [2020-10-14 00:16:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174189 states. [2020-10-14 00:16:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174189 states to 174189 states and 221988 transitions. [2020-10-14 00:16:52,481 INFO L78 Accepts]: Start accepts. Automaton has 174189 states and 221988 transitions. Word has length 570 [2020-10-14 00:16:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:16:52,482 INFO L479 AbstractCegarLoop]: Abstraction has 174189 states and 221988 transitions. [2020-10-14 00:16:52,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:16:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 174189 states and 221988 transitions. [2020-10-14 00:16:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-14 00:16:52,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:16:52,631 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 18, 18, 18, 16, 16, 14, 14, 11, 11, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:16:52,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:16:52,631 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:16:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:16:52,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2016218868, now seen corresponding path program 2 times [2020-10-14 00:16:52,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:16:52,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130312922] [2020-10-14 00:16:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:16:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:16:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:16:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking...