/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:21:52,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:21:52,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:21:52,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:21:52,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:21:52,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:21:52,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:21:52,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:21:52,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:21:52,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:21:52,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:21:52,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:21:52,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:21:52,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:21:52,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:21:52,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:21:52,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:21:52,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:21:52,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:21:52,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:21:52,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:21:52,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:21:52,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:21:52,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:21:52,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:21:52,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:21:52,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:21:52,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:21:52,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:21:52,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:21:52,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:21:52,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:21:52,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:21:52,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:21:52,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:21:52,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:21:52,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:21:52,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:21:52,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:21:52,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:21:52,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:21:52,571 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 [2020-09-25 04:21:52,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:21:52,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:21:52,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:21:52,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:21:52,615 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:21:52,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:21:52,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:21:52,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:21:52,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:21:52,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:21:52,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:21:52,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:21:52,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:21:52,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:21:52,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:21:52,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:21:52,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:21:52,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:21:52,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:21:52,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:21:52,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:21:52,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:21:52,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:21:52,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:21:52,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:21:52,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:21:52,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:21:52,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:21:52,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:21:52,620 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:21:53,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:21:53,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:21:53,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:21:53,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:21:53,097 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:21:53,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 04:21:53,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f0d5dc63/9c67e3c9d6cc447688ef0ba6fd6ce086/FLAG1fc4d97ff [2020-09-25 04:21:53,761 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:21:53,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 04:21:53,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f0d5dc63/9c67e3c9d6cc447688ef0ba6fd6ce086/FLAG1fc4d97ff [2020-09-25 04:21:54,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f0d5dc63/9c67e3c9d6cc447688ef0ba6fd6ce086 [2020-09-25 04:21:54,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:21:54,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:21:54,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:21:54,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:21:54,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:21:54,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576ff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54, skipping insertion in model container [2020-09-25 04:21:54,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:21:54,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:21:54,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:21:54,549 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:21:54,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:21:54,734 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:21:54,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54 WrapperNode [2020-09-25 04:21:54,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:21:54,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:21:54,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:21:54,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:21:54,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (1/1) ... [2020-09-25 04:21:54,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:21:54,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:21:54,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:21:54,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:21:54,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (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 [2020-09-25 04:21:54,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:21:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:21:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 04:21:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:21:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:21:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:21:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:21:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 04:21:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 04:21:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 04:21:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:21:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:21:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:21:55,138 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 04:21:55,898 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 04:21:55,898 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 04:21:55,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:21:55,917 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:21:55,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:21:55 BoogieIcfgContainer [2020-09-25 04:21:55,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:21:55,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:21:55,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:21:55,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:21:55,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:21:54" (1/3) ... [2020-09-25 04:21:55,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c9ba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:21:55, skipping insertion in model container [2020-09-25 04:21:55,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:54" (2/3) ... [2020-09-25 04:21:55,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c9ba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:21:55, skipping insertion in model container [2020-09-25 04:21:55,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:21:55" (3/3) ... [2020-09-25 04:21:55,937 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 04:21:55,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:21:55,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:21:55,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:21:56,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:21:56,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:21:56,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:21:56,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:21:56,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:21:56,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:21:56,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:21:56,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:21:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 04:21:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:21:56,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:56,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:56,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:56,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 04:21:56,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:56,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673249835] [2020-09-25 04:21:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:57,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:21:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:21:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-25 04:21:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:57,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:21:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-09-25 04:21:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:21:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:21:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:57,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:57,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:57,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:21:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:57,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:21:58,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673249835] [2020-09-25 04:21:58,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:21:58,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:21:58,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623527579] [2020-09-25 04:21:58,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:21:58,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:21:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:21:58,079 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 3 states. [2020-09-25 04:21:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:58,452 INFO L93 Difference]: Finished difference Result 864 states and 1153 transitions. [2020-09-25 04:21:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:21:58,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-09-25 04:21:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:58,476 INFO L225 Difference]: With dead ends: 864 [2020-09-25 04:21:58,476 INFO L226 Difference]: Without dead ends: 452 [2020-09-25 04:21:58,483 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 [2020-09-25 04:21:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-25 04:21:58,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 450. [2020-09-25 04:21:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-25 04:21:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 545 transitions. [2020-09-25 04:21:58,563 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 545 transitions. Word has length 161 [2020-09-25 04:21:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:58,564 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 545 transitions. [2020-09-25 04:21:58,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:21:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 545 transitions. [2020-09-25 04:21:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 04:21:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:58,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:58,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:21:58,570 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1376475421, now seen corresponding path program 1 times [2020-09-25 04:21:58,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:58,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236869863] [2020-09-25 04:21:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:59,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:59,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 04:21:59,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:21:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-25 04:21:59,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:59,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:21:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 04:21:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:21:59,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:21:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:21:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:21:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:59,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:21:59,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236869863] [2020-09-25 04:21:59,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:21:59,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:21:59,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223216286] [2020-09-25 04:21:59,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:21:59,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:59,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:21:59,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:21:59,405 INFO L87 Difference]: Start difference. First operand 450 states and 545 transitions. Second operand 4 states. [2020-09-25 04:21:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:59,730 INFO L93 Difference]: Finished difference Result 835 states and 1035 transitions. [2020-09-25 04:21:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:21:59,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 04:21:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:59,735 INFO L225 Difference]: With dead ends: 835 [2020-09-25 04:21:59,736 INFO L226 Difference]: Without dead ends: 524 [2020-09-25 04:21:59,737 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 [2020-09-25 04:21:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-25 04:21:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 488. [2020-09-25 04:21:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-09-25 04:21:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 588 transitions. [2020-09-25 04:21:59,775 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 588 transitions. Word has length 166 [2020-09-25 04:21:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:59,778 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 588 transitions. [2020-09-25 04:21:59,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:21:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 588 transitions. [2020-09-25 04:21:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 04:21:59,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:59,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:59,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:21:59,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1922098023, now seen corresponding path program 1 times [2020-09-25 04:21:59,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:59,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379685585] [2020-09-25 04:21:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:02,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:02,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:22:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:22:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-09-25 04:22:02,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:02,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 04:22:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:22:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:02,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:02,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:02,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:02,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:02,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:02,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:02,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:02,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379685585] [2020-09-25 04:22:02,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:02,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:02,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888927785] [2020-09-25 04:22:02,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:02,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:02,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:02,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:02,125 INFO L87 Difference]: Start difference. First operand 488 states and 588 transitions. Second operand 3 states. [2020-09-25 04:22:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:02,388 INFO L93 Difference]: Finished difference Result 898 states and 1135 transitions. [2020-09-25 04:22:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:02,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-09-25 04:22:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:02,393 INFO L225 Difference]: With dead ends: 898 [2020-09-25 04:22:02,393 INFO L226 Difference]: Without dead ends: 549 [2020-09-25 04:22:02,395 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 [2020-09-25 04:22:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-09-25 04:22:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 533. [2020-09-25 04:22:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-25 04:22:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 657 transitions. [2020-09-25 04:22:02,414 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 657 transitions. Word has length 167 [2020-09-25 04:22:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:02,415 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 657 transitions. [2020-09-25 04:22:02,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 657 transitions. [2020-09-25 04:22:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 04:22:02,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:02,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:02,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:22:02,418 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:02,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1422568045, now seen corresponding path program 1 times [2020-09-25 04:22:02,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:02,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879005442] [2020-09-25 04:22:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:03,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:22:03,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-25 04:22:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:03,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:22:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 04:22:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:22:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:03,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:03,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879005442] [2020-09-25 04:22:03,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:03,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:03,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819788023] [2020-09-25 04:22:03,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:03,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:03,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:03,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:03,084 INFO L87 Difference]: Start difference. First operand 533 states and 657 transitions. Second operand 4 states. [2020-09-25 04:22:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:03,339 INFO L93 Difference]: Finished difference Result 964 states and 1220 transitions. [2020-09-25 04:22:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:03,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 04:22:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:03,344 INFO L225 Difference]: With dead ends: 964 [2020-09-25 04:22:03,344 INFO L226 Difference]: Without dead ends: 570 [2020-09-25 04:22:03,345 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 [2020-09-25 04:22:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-09-25 04:22:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-09-25 04:22:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-25 04:22:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 685 transitions. [2020-09-25 04:22:03,364 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 685 transitions. Word has length 167 [2020-09-25 04:22:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:03,364 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 685 transitions. [2020-09-25 04:22:03,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 685 transitions. [2020-09-25 04:22:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 04:22:03,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:03,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:03,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:22:03,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:03,369 INFO L82 PathProgramCache]: Analyzing trace with hash -358793535, now seen corresponding path program 1 times [2020-09-25 04:22:03,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:03,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440675799] [2020-09-25 04:22:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:03,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 04:22:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:22:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-09-25 04:22:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:05,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 04:22:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:22:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:05,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:05,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:05,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:05,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440675799] [2020-09-25 04:22:05,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:05,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:05,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546378568] [2020-09-25 04:22:05,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:05,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:05,589 INFO L87 Difference]: Start difference. First operand 556 states and 685 transitions. Second operand 3 states. [2020-09-25 04:22:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:05,735 INFO L93 Difference]: Finished difference Result 988 states and 1245 transitions. [2020-09-25 04:22:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:05,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-25 04:22:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:05,740 INFO L225 Difference]: With dead ends: 988 [2020-09-25 04:22:05,740 INFO L226 Difference]: Without dead ends: 571 [2020-09-25 04:22:05,741 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 [2020-09-25 04:22:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-09-25 04:22:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-09-25 04:22:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-25 04:22:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 702 transitions. [2020-09-25 04:22:05,759 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 702 transitions. Word has length 168 [2020-09-25 04:22:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:05,760 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 702 transitions. [2020-09-25 04:22:05,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 702 transitions. [2020-09-25 04:22:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 04:22:05,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:05,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:05,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:22:05,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2095634517, now seen corresponding path program 1 times [2020-09-25 04:22:05,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:05,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420642212] [2020-09-25 04:22:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 04:22:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:22:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-09-25 04:22:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:07,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 04:22:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:22:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:07,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:07,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:07,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:07,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:07,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:07,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:07,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420642212] [2020-09-25 04:22:07,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:07,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:07,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266714301] [2020-09-25 04:22:07,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:07,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:07,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:07,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:07,435 INFO L87 Difference]: Start difference. First operand 571 states and 702 transitions. Second operand 3 states. [2020-09-25 04:22:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:07,669 INFO L93 Difference]: Finished difference Result 1064 states and 1363 transitions. [2020-09-25 04:22:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:07,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-25 04:22:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:07,675 INFO L225 Difference]: With dead ends: 1064 [2020-09-25 04:22:07,675 INFO L226 Difference]: Without dead ends: 632 [2020-09-25 04:22:07,677 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 [2020-09-25 04:22:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-09-25 04:22:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 605. [2020-09-25 04:22:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 04:22:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 753 transitions. [2020-09-25 04:22:07,694 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 753 transitions. Word has length 168 [2020-09-25 04:22:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 753 transitions. [2020-09-25 04:22:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 753 transitions. [2020-09-25 04:22:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:22:07,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:07,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:07,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:22:07,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 04:22:07,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:07,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044445977] [2020-09-25 04:22:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:08,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 04:22:08,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 04:22:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 04:22:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:22:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:08,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:08,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:08,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:08,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:08,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:08,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:08,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044445977] [2020-09-25 04:22:08,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:08,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:08,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793731566] [2020-09-25 04:22:08,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:08,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:08,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:08,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:08,248 INFO L87 Difference]: Start difference. First operand 605 states and 753 transitions. Second operand 3 states. [2020-09-25 04:22:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:08,452 INFO L93 Difference]: Finished difference Result 1516 states and 1952 transitions. [2020-09-25 04:22:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:08,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-09-25 04:22:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:08,461 INFO L225 Difference]: With dead ends: 1516 [2020-09-25 04:22:08,462 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 04:22:08,466 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 [2020-09-25 04:22:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 04:22:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2020-09-25 04:22:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2020-09-25 04:22:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1319 transitions. [2020-09-25 04:22:08,529 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1319 transitions. Word has length 176 [2020-09-25 04:22:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:08,530 INFO L479 AbstractCegarLoop]: Abstraction has 1048 states and 1319 transitions. [2020-09-25 04:22:08,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1319 transitions. [2020-09-25 04:22:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:22:08,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:08,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:08,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:22:08,537 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203184, now seen corresponding path program 1 times [2020-09-25 04:22:08,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:08,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086798597] [2020-09-25 04:22:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:22:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-09-25 04:22:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:09,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:22:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:22:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 04:22:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:09,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:09,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:22:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:09,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086798597] [2020-09-25 04:22:09,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:09,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:22:09,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699333630] [2020-09-25 04:22:09,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:22:09,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:22:09,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:22:09,505 INFO L87 Difference]: Start difference. First operand 1048 states and 1319 transitions. Second operand 7 states. [2020-09-25 04:22:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:10,150 INFO L93 Difference]: Finished difference Result 2926 states and 3732 transitions. [2020-09-25 04:22:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:22:10,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 04:22:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:10,165 INFO L225 Difference]: With dead ends: 2926 [2020-09-25 04:22:10,165 INFO L226 Difference]: Without dead ends: 2017 [2020-09-25 04:22:10,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:22:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2020-09-25 04:22:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1644. [2020-09-25 04:22:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-09-25 04:22:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2098 transitions. [2020-09-25 04:22:10,243 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2098 transitions. Word has length 179 [2020-09-25 04:22:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:10,244 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2098 transitions. [2020-09-25 04:22:10,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:22:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2098 transitions. [2020-09-25 04:22:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 04:22:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:10,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:10,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:22:10,250 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 04:22:10,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:10,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096652082] [2020-09-25 04:22:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:10,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:10,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:10,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 04:22:10,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 04:22:10,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:10,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 04:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:22:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:10,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:10,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:10,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096652082] [2020-09-25 04:22:10,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:10,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:10,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671987] [2020-09-25 04:22:10,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:10,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:10,712 INFO L87 Difference]: Start difference. First operand 1644 states and 2098 transitions. Second operand 3 states. [2020-09-25 04:22:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:10,931 INFO L93 Difference]: Finished difference Result 3151 states and 4097 transitions. [2020-09-25 04:22:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:10,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 04:22:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:10,945 INFO L225 Difference]: With dead ends: 3151 [2020-09-25 04:22:10,945 INFO L226 Difference]: Without dead ends: 2377 [2020-09-25 04:22:10,950 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 [2020-09-25 04:22:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-09-25 04:22:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2375. [2020-09-25 04:22:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-09-25 04:22:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3035 transitions. [2020-09-25 04:22:11,046 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3035 transitions. Word has length 202 [2020-09-25 04:22:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:11,047 INFO L479 AbstractCegarLoop]: Abstraction has 2375 states and 3035 transitions. [2020-09-25 04:22:11,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3035 transitions. [2020-09-25 04:22:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:22:11,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:11,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:11,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:22:11,056 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1593461350, now seen corresponding path program 1 times [2020-09-25 04:22:11,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:11,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363930998] [2020-09-25 04:22:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:11,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 04:22:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-09-25 04:22:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:12,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-09-25 04:22:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:22:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:12,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:12,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:12,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:22:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:12,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363930998] [2020-09-25 04:22:12,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:12,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:12,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673470046] [2020-09-25 04:22:12,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:12,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:12,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:12,661 INFO L87 Difference]: Start difference. First operand 2375 states and 3035 transitions. Second operand 4 states. [2020-09-25 04:22:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:12,991 INFO L93 Difference]: Finished difference Result 4731 states and 6146 transitions. [2020-09-25 04:22:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:12,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2020-09-25 04:22:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:13,004 INFO L225 Difference]: With dead ends: 4731 [2020-09-25 04:22:13,004 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 04:22:13,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 04:22:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2297. [2020-09-25 04:22:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-09-25 04:22:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2930 transitions. [2020-09-25 04:22:13,083 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2930 transitions. Word has length 203 [2020-09-25 04:22:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:13,083 INFO L479 AbstractCegarLoop]: Abstraction has 2297 states and 2930 transitions. [2020-09-25 04:22:13,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2930 transitions. [2020-09-25 04:22:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 04:22:13,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:13,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:13,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:22:13,093 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash 438775901, now seen corresponding path program 1 times [2020-09-25 04:22:13,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:13,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458759359] [2020-09-25 04:22:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:13,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 04:22:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-09-25 04:22:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 04:22:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:22:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:14,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:14,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:14,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:14,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:14,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:14,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458759359] [2020-09-25 04:22:14,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:14,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:14,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541742463] [2020-09-25 04:22:14,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:14,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:14,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:14,555 INFO L87 Difference]: Start difference. First operand 2297 states and 2930 transitions. Second operand 4 states. [2020-09-25 04:22:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:15,104 INFO L93 Difference]: Finished difference Result 7012 states and 9158 transitions. [2020-09-25 04:22:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:15,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-09-25 04:22:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:15,129 INFO L225 Difference]: With dead ends: 7012 [2020-09-25 04:22:15,130 INFO L226 Difference]: Without dead ends: 4854 [2020-09-25 04:22:15,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2020-09-25 04:22:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 2381. [2020-09-25 04:22:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-09-25 04:22:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3074 transitions. [2020-09-25 04:22:15,284 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3074 transitions. Word has length 208 [2020-09-25 04:22:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:15,284 INFO L479 AbstractCegarLoop]: Abstraction has 2381 states and 3074 transitions. [2020-09-25 04:22:15,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3074 transitions. [2020-09-25 04:22:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 04:22:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:15,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:15,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:22:15,295 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash -747548647, now seen corresponding path program 1 times [2020-09-25 04:22:15,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:15,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182130796] [2020-09-25 04:22:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:15,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 04:22:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 04:22:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 04:22:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:22:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:15,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:22:16,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182130796] [2020-09-25 04:22:16,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:16,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:16,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392293478] [2020-09-25 04:22:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:16,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:16,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:16,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:16,054 INFO L87 Difference]: Start difference. First operand 2381 states and 3074 transitions. Second operand 3 states. [2020-09-25 04:22:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:16,201 INFO L93 Difference]: Finished difference Result 6674 states and 8706 transitions. [2020-09-25 04:22:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:16,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-25 04:22:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:16,232 INFO L225 Difference]: With dead ends: 6674 [2020-09-25 04:22:16,232 INFO L226 Difference]: Without dead ends: 4432 [2020-09-25 04:22:16,241 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 [2020-09-25 04:22:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2020-09-25 04:22:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4430. [2020-09-25 04:22:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4430 states. [2020-09-25 04:22:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 5765 transitions. [2020-09-25 04:22:16,436 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 5765 transitions. Word has length 208 [2020-09-25 04:22:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:16,437 INFO L479 AbstractCegarLoop]: Abstraction has 4430 states and 5765 transitions. [2020-09-25 04:22:16,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 5765 transitions. [2020-09-25 04:22:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 04:22:16,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:16,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:16,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:22:16,451 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash 795717235, now seen corresponding path program 1 times [2020-09-25 04:22:16,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:16,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535129005] [2020-09-25 04:22:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:18,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 04:22:18,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:22:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2289 [2020-09-25 04:22:18,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:18,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:22:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-25 04:22:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:22:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:18,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:18,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:18,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535129005] [2020-09-25 04:22:18,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:18,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:18,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184149541] [2020-09-25 04:22:18,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:18,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:18,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:18,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:18,956 INFO L87 Difference]: Start difference. First operand 4430 states and 5765 transitions. Second operand 4 states. [2020-09-25 04:22:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:19,350 INFO L93 Difference]: Finished difference Result 9491 states and 12348 transitions. [2020-09-25 04:22:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:19,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-09-25 04:22:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:19,378 INFO L225 Difference]: With dead ends: 9491 [2020-09-25 04:22:19,378 INFO L226 Difference]: Without dead ends: 5200 [2020-09-25 04:22:19,393 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 [2020-09-25 04:22:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2020-09-25 04:22:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 3618. [2020-09-25 04:22:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3618 states. [2020-09-25 04:22:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 4775 transitions. [2020-09-25 04:22:19,632 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 4775 transitions. Word has length 209 [2020-09-25 04:22:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:19,633 INFO L479 AbstractCegarLoop]: Abstraction has 3618 states and 4775 transitions. [2020-09-25 04:22:19,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 4775 transitions. [2020-09-25 04:22:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 04:22:19,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:19,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:19,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:22:19,640 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:19,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1477881571, now seen corresponding path program 1 times [2020-09-25 04:22:19,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:19,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392918137] [2020-09-25 04:22:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 04:22:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 04:22:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 04:22:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:20,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:20,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:20,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:20,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:20,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:20,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:22:20,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392918137] [2020-09-25 04:22:20,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:20,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:22:20,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049322120] [2020-09-25 04:22:20,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:22:20,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:22:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:22:20,236 INFO L87 Difference]: Start difference. First operand 3618 states and 4775 transitions. Second operand 6 states. [2020-09-25 04:22:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:20,540 INFO L93 Difference]: Finished difference Result 7320 states and 9710 transitions. [2020-09-25 04:22:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:22:20,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-09-25 04:22:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:20,559 INFO L225 Difference]: With dead ends: 7320 [2020-09-25 04:22:20,559 INFO L226 Difference]: Without dead ends: 3841 [2020-09-25 04:22:20,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:22:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2020-09-25 04:22:20,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3768. [2020-09-25 04:22:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3768 states. [2020-09-25 04:22:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 4955 transitions. [2020-09-25 04:22:20,699 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 4955 transitions. Word has length 210 [2020-09-25 04:22:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:20,700 INFO L479 AbstractCegarLoop]: Abstraction has 3768 states and 4955 transitions. [2020-09-25 04:22:20,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:22:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 4955 transitions. [2020-09-25 04:22:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:22:20,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:20,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:20,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 04:22:20,708 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:20,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:20,709 INFO L82 PathProgramCache]: Analyzing trace with hash -535118462, now seen corresponding path program 1 times [2020-09-25 04:22:20,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:20,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793561581] [2020-09-25 04:22:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:22,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 04:22:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:22:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-09-25 04:22:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:22,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 04:22:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:22:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:22,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:22,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:22,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:22,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:22,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 04:22:22,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793561581] [2020-09-25 04:22:22,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:22,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:22,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924765368] [2020-09-25 04:22:22,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:22,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:22,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:22,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:22,500 INFO L87 Difference]: Start difference. First operand 3768 states and 4955 transitions. Second operand 3 states. [2020-09-25 04:22:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:22,653 INFO L93 Difference]: Finished difference Result 6220 states and 8214 transitions. [2020-09-25 04:22:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:22,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-09-25 04:22:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:22,668 INFO L225 Difference]: With dead ends: 6220 [2020-09-25 04:22:22,668 INFO L226 Difference]: Without dead ends: 2591 [2020-09-25 04:22:22,679 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 [2020-09-25 04:22:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-09-25 04:22:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2591. [2020-09-25 04:22:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-09-25 04:22:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3401 transitions. [2020-09-25 04:22:22,767 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3401 transitions. Word has length 219 [2020-09-25 04:22:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:22,768 INFO L479 AbstractCegarLoop]: Abstraction has 2591 states and 3401 transitions. [2020-09-25 04:22:22,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3401 transitions. [2020-09-25 04:22:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 04:22:22,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:22,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:22,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 04:22:22,781 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash -275265872, now seen corresponding path program 1 times [2020-09-25 04:22:22,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:22,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256642160] [2020-09-25 04:22:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:23,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 04:22:23,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:22:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-09-25 04:22:23,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:23,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:22:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 04:22:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:22:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:23,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:23,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:23,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256642160] [2020-09-25 04:22:23,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:23,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:23,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479679874] [2020-09-25 04:22:23,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:23,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:23,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:23,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:23,840 INFO L87 Difference]: Start difference. First operand 2591 states and 3401 transitions. Second operand 4 states. [2020-09-25 04:22:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:24,172 INFO L93 Difference]: Finished difference Result 5783 states and 7562 transitions. [2020-09-25 04:22:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:24,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2020-09-25 04:22:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:24,187 INFO L225 Difference]: With dead ends: 5783 [2020-09-25 04:22:24,187 INFO L226 Difference]: Without dead ends: 3347 [2020-09-25 04:22:24,193 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 [2020-09-25 04:22:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2020-09-25 04:22:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2317. [2020-09-25 04:22:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-09-25 04:22:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3067 transitions. [2020-09-25 04:22:24,279 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3067 transitions. Word has length 220 [2020-09-25 04:22:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:24,279 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 3067 transitions. [2020-09-25 04:22:24,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3067 transitions. [2020-09-25 04:22:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 04:22:24,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:24,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:24,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 04:22:24,286 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash -678339482, now seen corresponding path program 1 times [2020-09-25 04:22:24,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:24,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215497205] [2020-09-25 04:22:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 04:22:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:22:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-09-25 04:22:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:25,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:22:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 04:22:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:22:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:25,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:25,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:25,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:25,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215497205] [2020-09-25 04:22:25,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:25,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:25,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376587138] [2020-09-25 04:22:25,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:25,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:25,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:25,604 INFO L87 Difference]: Start difference. First operand 2317 states and 3067 transitions. Second operand 4 states. [2020-09-25 04:22:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:25,913 INFO L93 Difference]: Finished difference Result 4836 states and 6454 transitions. [2020-09-25 04:22:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:25,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-09-25 04:22:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:25,922 INFO L225 Difference]: With dead ends: 4836 [2020-09-25 04:22:25,922 INFO L226 Difference]: Without dead ends: 2674 [2020-09-25 04:22:25,928 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 [2020-09-25 04:22:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-09-25 04:22:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2339. [2020-09-25 04:22:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2339 states. [2020-09-25 04:22:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3023 transitions. [2020-09-25 04:22:26,009 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3023 transitions. Word has length 221 [2020-09-25 04:22:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:26,010 INFO L479 AbstractCegarLoop]: Abstraction has 2339 states and 3023 transitions. [2020-09-25 04:22:26,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3023 transitions. [2020-09-25 04:22:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 04:22:26,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:26,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:26,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 04:22:26,017 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 04:22:26,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:26,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370149370] [2020-09-25 04:22:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:26,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:26,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 04:22:26,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:26,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 04:22:26,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:26,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 04:22:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:22:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:26,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:26,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:26,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:26,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:22:26,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370149370] [2020-09-25 04:22:26,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:26,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:26,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537553630] [2020-09-25 04:22:26,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:26,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:26,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:26,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:26,445 INFO L87 Difference]: Start difference. First operand 2339 states and 3023 transitions. Second operand 3 states. [2020-09-25 04:22:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:26,671 INFO L93 Difference]: Finished difference Result 5595 states and 7319 transitions. [2020-09-25 04:22:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:26,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 04:22:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:26,679 INFO L225 Difference]: With dead ends: 5595 [2020-09-25 04:22:26,680 INFO L226 Difference]: Without dead ends: 3411 [2020-09-25 04:22:26,687 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 [2020-09-25 04:22:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2020-09-25 04:22:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3409. [2020-09-25 04:22:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3409 states. [2020-09-25 04:22:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3409 states to 3409 states and 4415 transitions. [2020-09-25 04:22:26,790 INFO L78 Accepts]: Start accepts. Automaton has 3409 states and 4415 transitions. Word has length 230 [2020-09-25 04:22:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:26,791 INFO L479 AbstractCegarLoop]: Abstraction has 3409 states and 4415 transitions. [2020-09-25 04:22:26,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3409 states and 4415 transitions. [2020-09-25 04:22:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 04:22:26,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:26,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:26,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 04:22:26,798 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:26,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1448252806, now seen corresponding path program 1 times [2020-09-25 04:22:26,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:26,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111763300] [2020-09-25 04:22:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:27,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 04:22:27,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 04:22:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:27,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 04:22:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:22:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:27,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:27,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:22:27,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111763300] [2020-09-25 04:22:27,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:27,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:27,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133671011] [2020-09-25 04:22:27,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:27,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:27,167 INFO L87 Difference]: Start difference. First operand 3409 states and 4415 transitions. Second operand 3 states. [2020-09-25 04:22:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:27,443 INFO L93 Difference]: Finished difference Result 7345 states and 9682 transitions. [2020-09-25 04:22:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:27,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-25 04:22:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:27,452 INFO L225 Difference]: With dead ends: 7345 [2020-09-25 04:22:27,452 INFO L226 Difference]: Without dead ends: 3893 [2020-09-25 04:22:27,460 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 [2020-09-25 04:22:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2020-09-25 04:22:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3817. [2020-09-25 04:22:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2020-09-25 04:22:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 4904 transitions. [2020-09-25 04:22:27,563 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 4904 transitions. Word has length 237 [2020-09-25 04:22:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:27,563 INFO L479 AbstractCegarLoop]: Abstraction has 3817 states and 4904 transitions. [2020-09-25 04:22:27,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 4904 transitions. [2020-09-25 04:22:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 04:22:27,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:27,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:27,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 04:22:27,572 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash -460241056, now seen corresponding path program 1 times [2020-09-25 04:22:27,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:27,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105005925] [2020-09-25 04:22:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 04:22:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 04:22:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:22:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:28,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:28,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:28,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:28,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:28,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:22:28,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105005925] [2020-09-25 04:22:28,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:28,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:28,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962287653] [2020-09-25 04:22:28,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:28,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:28,288 INFO L87 Difference]: Start difference. First operand 3817 states and 4904 transitions. Second operand 4 states. [2020-09-25 04:22:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:28,814 INFO L93 Difference]: Finished difference Result 11667 states and 15094 transitions. [2020-09-25 04:22:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:28,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-09-25 04:22:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:28,835 INFO L225 Difference]: With dead ends: 11667 [2020-09-25 04:22:28,835 INFO L226 Difference]: Without dead ends: 8005 [2020-09-25 04:22:28,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8005 states. [2020-09-25 04:22:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8005 to 3973. [2020-09-25 04:22:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3973 states. [2020-09-25 04:22:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 5090 transitions. [2020-09-25 04:22:29,009 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 5090 transitions. Word has length 244 [2020-09-25 04:22:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:29,010 INFO L479 AbstractCegarLoop]: Abstraction has 3973 states and 5090 transitions. [2020-09-25 04:22:29,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 5090 transitions. [2020-09-25 04:22:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 04:22:29,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:29,022 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:29,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 04:22:29,022 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:29,023 INFO L82 PathProgramCache]: Analyzing trace with hash 617625531, now seen corresponding path program 1 times [2020-09-25 04:22:29,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:29,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351320605] [2020-09-25 04:22:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 04:22:29,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 04:22:29,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:29,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 04:22:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:22:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:29,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 04:22:29,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351320605] [2020-09-25 04:22:29,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:29,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:29,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417204810] [2020-09-25 04:22:29,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:29,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:29,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:29,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:29,501 INFO L87 Difference]: Start difference. First operand 3973 states and 5090 transitions. Second operand 3 states. [2020-09-25 04:22:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:29,668 INFO L93 Difference]: Finished difference Result 6611 states and 8496 transitions. [2020-09-25 04:22:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:29,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 04:22:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:29,675 INFO L225 Difference]: With dead ends: 6611 [2020-09-25 04:22:29,676 INFO L226 Difference]: Without dead ends: 2793 [2020-09-25 04:22:29,684 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 [2020-09-25 04:22:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2020-09-25 04:22:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2793. [2020-09-25 04:22:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2793 states. [2020-09-25 04:22:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3563 transitions. [2020-09-25 04:22:29,763 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3563 transitions. Word has length 264 [2020-09-25 04:22:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 2793 states and 3563 transitions. [2020-09-25 04:22:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3563 transitions. [2020-09-25 04:22:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 04:22:29,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:29,771 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:29,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 04:22:29,775 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:29,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1700760701, now seen corresponding path program 1 times [2020-09-25 04:22:29,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:29,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254398616] [2020-09-25 04:22:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 04:22:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:22:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 04:22:30,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:30,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 04:22:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:22:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:30,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:30,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:30,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:30,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:30,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 04:22:30,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254398616] [2020-09-25 04:22:30,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:30,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:30,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886529120] [2020-09-25 04:22:30,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:30,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:30,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:30,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:30,567 INFO L87 Difference]: Start difference. First operand 2793 states and 3563 transitions. Second operand 3 states. [2020-09-25 04:22:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:30,780 INFO L93 Difference]: Finished difference Result 6691 states and 8624 transitions. [2020-09-25 04:22:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:30,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 04:22:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:30,791 INFO L225 Difference]: With dead ends: 6691 [2020-09-25 04:22:30,791 INFO L226 Difference]: Without dead ends: 4053 [2020-09-25 04:22:30,797 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 [2020-09-25 04:22:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-09-25 04:22:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 4051. [2020-09-25 04:22:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2020-09-25 04:22:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5182 transitions. [2020-09-25 04:22:30,915 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5182 transitions. Word has length 264 [2020-09-25 04:22:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:30,916 INFO L479 AbstractCegarLoop]: Abstraction has 4051 states and 5182 transitions. [2020-09-25 04:22:30,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5182 transitions. [2020-09-25 04:22:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 04:22:30,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:30,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:30,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 04:22:30,924 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash 809738214, now seen corresponding path program 1 times [2020-09-25 04:22:30,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:30,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192037138] [2020-09-25 04:22:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 04:22:31,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 04:22:31,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:31,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 04:22:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:22:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:31,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:31,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:22:31,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:31,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:22:31,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192037138] [2020-09-25 04:22:31,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:31,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:31,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793542140] [2020-09-25 04:22:31,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:31,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:31,217 INFO L87 Difference]: Start difference. First operand 4051 states and 5182 transitions. Second operand 3 states. [2020-09-25 04:22:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:31,519 INFO L93 Difference]: Finished difference Result 8277 states and 10715 transitions. [2020-09-25 04:22:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:31,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2020-09-25 04:22:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:31,536 INFO L225 Difference]: With dead ends: 8277 [2020-09-25 04:22:31,536 INFO L226 Difference]: Without dead ends: 4381 [2020-09-25 04:22:31,544 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 [2020-09-25 04:22:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-09-25 04:22:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4333. [2020-09-25 04:22:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2020-09-25 04:22:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 5512 transitions. [2020-09-25 04:22:31,688 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 5512 transitions. Word has length 265 [2020-09-25 04:22:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:31,689 INFO L479 AbstractCegarLoop]: Abstraction has 4333 states and 5512 transitions. [2020-09-25 04:22:31,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 5512 transitions. [2020-09-25 04:22:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 04:22:31,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:31,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:31,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 04:22:31,702 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1295291514, now seen corresponding path program 1 times [2020-09-25 04:22:31,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:31,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671905348] [2020-09-25 04:22:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:32,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:32,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 04:22:32,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 04:22:32,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:32,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 04:22:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:22:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:32,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:32,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:32,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:32,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:22:32,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671905348] [2020-09-25 04:22:32,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:32,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:32,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463808312] [2020-09-25 04:22:32,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:32,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:32,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:32,260 INFO L87 Difference]: Start difference. First operand 4333 states and 5512 transitions. Second operand 3 states. [2020-09-25 04:22:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:32,544 INFO L93 Difference]: Finished difference Result 9037 states and 11582 transitions. [2020-09-25 04:22:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:32,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2020-09-25 04:22:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:32,554 INFO L225 Difference]: With dead ends: 9037 [2020-09-25 04:22:32,555 INFO L226 Difference]: Without dead ends: 4739 [2020-09-25 04:22:32,563 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 [2020-09-25 04:22:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2020-09-25 04:22:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4513. [2020-09-25 04:22:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4513 states. [2020-09-25 04:22:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 5746 transitions. [2020-09-25 04:22:32,676 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 5746 transitions. Word has length 265 [2020-09-25 04:22:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:32,677 INFO L479 AbstractCegarLoop]: Abstraction has 4513 states and 5746 transitions. [2020-09-25 04:22:32,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 5746 transitions. [2020-09-25 04:22:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 04:22:32,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:32,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:32,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 04:22:32,685 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1518624884, now seen corresponding path program 1 times [2020-09-25 04:22:32,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:32,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144277500] [2020-09-25 04:22:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 04:22:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 04:22:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:32,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 04:22:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:22:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:33,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:33,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:22:33,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144277500] [2020-09-25 04:22:33,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:33,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:33,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560779322] [2020-09-25 04:22:33,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:33,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:33,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:33,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:33,100 INFO L87 Difference]: Start difference. First operand 4513 states and 5746 transitions. Second operand 4 states. [2020-09-25 04:22:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:33,658 INFO L93 Difference]: Finished difference Result 13913 states and 17968 transitions. [2020-09-25 04:22:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:33,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2020-09-25 04:22:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:33,681 INFO L225 Difference]: With dead ends: 13913 [2020-09-25 04:22:33,682 INFO L226 Difference]: Without dead ends: 9435 [2020-09-25 04:22:33,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:33,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9435 states. [2020-09-25 04:22:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9435 to 4807. [2020-09-25 04:22:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4807 states. [2020-09-25 04:22:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 6190 transitions. [2020-09-25 04:22:33,870 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 6190 transitions. Word has length 272 [2020-09-25 04:22:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:33,870 INFO L479 AbstractCegarLoop]: Abstraction has 4807 states and 6190 transitions. [2020-09-25 04:22:33,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 6190 transitions. [2020-09-25 04:22:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 04:22:33,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:33,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:33,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 04:22:33,878 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:33,879 INFO L82 PathProgramCache]: Analyzing trace with hash 262452230, now seen corresponding path program 1 times [2020-09-25 04:22:33,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:33,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215090731] [2020-09-25 04:22:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 04:22:34,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 04:22:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:34,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 04:22:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:22:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:34,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:22:34,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215090731] [2020-09-25 04:22:34,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:34,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:34,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805736600] [2020-09-25 04:22:34,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:34,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:34,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:34,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:34,369 INFO L87 Difference]: Start difference. First operand 4807 states and 6190 transitions. Second operand 4 states. [2020-09-25 04:22:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:34,899 INFO L93 Difference]: Finished difference Result 14813 states and 19120 transitions. [2020-09-25 04:22:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:34,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2020-09-25 04:22:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:34,918 INFO L225 Difference]: With dead ends: 14813 [2020-09-25 04:22:34,919 INFO L226 Difference]: Without dead ends: 10161 [2020-09-25 04:22:34,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2020-09-25 04:22:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5107. [2020-09-25 04:22:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2020-09-25 04:22:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 6520 transitions. [2020-09-25 04:22:35,131 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 6520 transitions. Word has length 273 [2020-09-25 04:22:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:35,132 INFO L479 AbstractCegarLoop]: Abstraction has 5107 states and 6520 transitions. [2020-09-25 04:22:35,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 6520 transitions. [2020-09-25 04:22:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 04:22:35,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:35,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:35,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-25 04:22:35,142 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:35,144 INFO L82 PathProgramCache]: Analyzing trace with hash 167174054, now seen corresponding path program 1 times [2020-09-25 04:22:35,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:35,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613361828] [2020-09-25 04:22:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:35,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 04:22:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 04:22:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:35,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 04:22:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:22:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:35,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:22:35,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613361828] [2020-09-25 04:22:35,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:35,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:35,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032676558] [2020-09-25 04:22:35,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:35,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:35,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:35,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:35,972 INFO L87 Difference]: Start difference. First operand 5107 states and 6520 transitions. Second operand 4 states. [2020-09-25 04:22:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:36,485 INFO L93 Difference]: Finished difference Result 15053 states and 19266 transitions. [2020-09-25 04:22:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:36,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2020-09-25 04:22:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:36,508 INFO L225 Difference]: With dead ends: 15053 [2020-09-25 04:22:36,508 INFO L226 Difference]: Without dead ends: 10101 [2020-09-25 04:22:36,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2020-09-25 04:22:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 5125. [2020-09-25 04:22:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5125 states. [2020-09-25 04:22:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 6514 transitions. [2020-09-25 04:22:36,742 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 6514 transitions. Word has length 273 [2020-09-25 04:22:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:36,742 INFO L479 AbstractCegarLoop]: Abstraction has 5125 states and 6514 transitions. [2020-09-25 04:22:36,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 6514 transitions. [2020-09-25 04:22:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-25 04:22:36,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:36,757 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:36,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-25 04:22:36,758 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1630933474, now seen corresponding path program 1 times [2020-09-25 04:22:36,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:36,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996532062] [2020-09-25 04:22:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 04:22:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:22:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:37,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:37,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:22:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 04:22:37,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996532062] [2020-09-25 04:22:37,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:37,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:37,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781316794] [2020-09-25 04:22:37,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:37,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:37,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:37,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:37,257 INFO L87 Difference]: Start difference. First operand 5125 states and 6514 transitions. Second operand 3 states. [2020-09-25 04:22:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:37,581 INFO L93 Difference]: Finished difference Result 10861 states and 13866 transitions. [2020-09-25 04:22:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:37,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2020-09-25 04:22:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:37,590 INFO L225 Difference]: With dead ends: 10861 [2020-09-25 04:22:37,590 INFO L226 Difference]: Without dead ends: 5783