/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=1.0 --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_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:00,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:00,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:00,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:00,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:00,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:00,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:00,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:00,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:00,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:00,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:00,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:00,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:00,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:00,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:00,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:00,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:00,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:00,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:00,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:00,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:00,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:00,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:00,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:00,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:00,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:00,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:00,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:00,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:00,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:00,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:00,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:00,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:00,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:00,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:00,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:00,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:00,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:00,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:00,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:00,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:00,939 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 08:57:00,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:00,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:00,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:00,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:00,977 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:00,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:00,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:00,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:00,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:00,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:00,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:00,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:00,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:00,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:00,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:00,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:00,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:00,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:00,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:00,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:00,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:00,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:00,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:00,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:00,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:00,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:00,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:00,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:00,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:00,985 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:57:01,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:01,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:01,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:01,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:01,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:01,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 08:57:01,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70e1d2872/6691808609354498b522696bc5c777cf/FLAG6445dfcd7 [2020-09-25 08:57:02,232 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:02,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 08:57:02,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70e1d2872/6691808609354498b522696bc5c777cf/FLAG6445dfcd7 [2020-09-25 08:57:02,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70e1d2872/6691808609354498b522696bc5c777cf [2020-09-25 08:57:02,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:02,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:02,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:02,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:02,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:02,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02, skipping insertion in model container [2020-09-25 08:57:02,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:02,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:02,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:02,952 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:03,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:03,155 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:03,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03 WrapperNode [2020-09-25 08:57:03,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:03,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:03,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:03,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:03,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (1/1) ... [2020-09-25 08:57:03,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:03,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:03,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:03,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:03,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (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 08:57:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 08:57:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:57:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 08:57:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 08:57:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:03,588 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 08:57:04,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 08:57:04,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 08:57:04,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:04,304 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:57:04,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:04 BoogieIcfgContainer [2020-09-25 08:57:04,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:04,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:04,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:04,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:04,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:02" (1/3) ... [2020-09-25 08:57:04,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51479021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:04, skipping insertion in model container [2020-09-25 08:57:04,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:03" (2/3) ... [2020-09-25 08:57:04,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51479021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:04, skipping insertion in model container [2020-09-25 08:57:04,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:04" (3/3) ... [2020-09-25 08:57:04,330 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 08:57:04,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:04,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:04,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:04,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:04,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:04,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:04,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:04,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:04,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:04,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:04,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 08:57:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 08:57:04,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:04,511 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] [2020-09-25 08:57:04,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 08:57:04,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:04,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084601432] [2020-09-25 08:57:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:06,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 08:57:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-09-25 08:57:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:06,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:57:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:57:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:06,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:06,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:06,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:06,388 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 08:57:06,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084601432] [2020-09-25 08:57:06,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:06,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:06,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275199025] [2020-09-25 08:57:06,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:06,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:06,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:06,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:06,428 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 4 states. [2020-09-25 08:57:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:06,852 INFO L93 Difference]: Finished difference Result 787 states and 1025 transitions. [2020-09-25 08:57:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:06,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 08:57:06,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:06,877 INFO L225 Difference]: With dead ends: 787 [2020-09-25 08:57:06,878 INFO L226 Difference]: Without dead ends: 439 [2020-09-25 08:57:06,885 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 08:57:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-25 08:57:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2020-09-25 08:57:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-25 08:57:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 512 transitions. [2020-09-25 08:57:06,985 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 512 transitions. Word has length 160 [2020-09-25 08:57:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:06,986 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 512 transitions. [2020-09-25 08:57:06,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 512 transitions. [2020-09-25 08:57:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 08:57:06,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:06,991 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] [2020-09-25 08:57:06,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:06,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash 732761503, now seen corresponding path program 1 times [2020-09-25 08:57:06,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:06,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047305844] [2020-09-25 08:57:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 08:57:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-09-25 08:57:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:07,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:57:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:08,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:08,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:08,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:08,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:08,076 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 08:57:08,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047305844] [2020-09-25 08:57:08,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:08,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:08,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46659455] [2020-09-25 08:57:08,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:08,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:08,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:08,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:08,091 INFO L87 Difference]: Start difference. First operand 428 states and 512 transitions. Second operand 4 states. [2020-09-25 08:57:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:08,357 INFO L93 Difference]: Finished difference Result 757 states and 932 transitions. [2020-09-25 08:57:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:08,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-09-25 08:57:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:08,363 INFO L225 Difference]: With dead ends: 757 [2020-09-25 08:57:08,363 INFO L226 Difference]: Without dead ends: 469 [2020-09-25 08:57:08,366 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 08:57:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-25 08:57:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 458. [2020-09-25 08:57:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-09-25 08:57:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 547 transitions. [2020-09-25 08:57:08,390 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 547 transitions. Word has length 165 [2020-09-25 08:57:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:08,391 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 547 transitions. [2020-09-25 08:57:08,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 547 transitions. [2020-09-25 08:57:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 08:57:08,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:08,395 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 08:57:08,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:08,396 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash -296204506, now seen corresponding path program 1 times [2020-09-25 08:57:08,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:08,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309211112] [2020-09-25 08:57:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:10,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 08:57:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1979 [2020-09-25 08:57:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:10,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:10,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:10,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:10,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:10,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:10,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:10,490 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 08:57:10,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309211112] [2020-09-25 08:57:10,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:10,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:10,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793476692] [2020-09-25 08:57:10,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:10,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:10,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:10,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:10,494 INFO L87 Difference]: Start difference. First operand 458 states and 547 transitions. Second operand 4 states. [2020-09-25 08:57:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:10,739 INFO L93 Difference]: Finished difference Result 819 states and 1002 transitions. [2020-09-25 08:57:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:10,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 08:57:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:10,744 INFO L225 Difference]: With dead ends: 819 [2020-09-25 08:57:10,744 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 08:57:10,746 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 08:57:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 08:57:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 490. [2020-09-25 08:57:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-25 08:57:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 586 transitions. [2020-09-25 08:57:10,765 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 586 transitions. Word has length 166 [2020-09-25 08:57:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:10,766 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 586 transitions. [2020-09-25 08:57:10,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 586 transitions. [2020-09-25 08:57:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 08:57:10,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:10,770 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 08:57:10,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:10,770 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 891632122, now seen corresponding path program 1 times [2020-09-25 08:57:10,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:10,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132827840] [2020-09-25 08:57:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 08:57:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-09-25 08:57:11,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:11,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:11,970 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 08:57:11,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132827840] [2020-09-25 08:57:11,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:11,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:11,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330843443] [2020-09-25 08:57:11,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:11,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:11,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:11,973 INFO L87 Difference]: Start difference. First operand 490 states and 586 transitions. Second operand 4 states. [2020-09-25 08:57:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:12,195 INFO L93 Difference]: Finished difference Result 874 states and 1074 transitions. [2020-09-25 08:57:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:12,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 08:57:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:12,200 INFO L225 Difference]: With dead ends: 874 [2020-09-25 08:57:12,200 INFO L226 Difference]: Without dead ends: 524 [2020-09-25 08:57:12,201 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 08:57:12,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-25 08:57:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 513. [2020-09-25 08:57:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 08:57:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 614 transitions. [2020-09-25 08:57:12,217 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 614 transitions. Word has length 166 [2020-09-25 08:57:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:12,218 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 614 transitions. [2020-09-25 08:57:12,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 614 transitions. [2020-09-25 08:57:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 08:57:12,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:12,220 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 08:57:12,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:12,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1047125047, now seen corresponding path program 1 times [2020-09-25 08:57:12,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:12,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41687634] [2020-09-25 08:57:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:13,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 08:57:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 08:57:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:13,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:57:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,046 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 08:57:14,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41687634] [2020-09-25 08:57:14,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:14,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:14,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052416800] [2020-09-25 08:57:14,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:14,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:14,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:14,049 INFO L87 Difference]: Start difference. First operand 513 states and 614 transitions. Second operand 4 states. [2020-09-25 08:57:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:14,290 INFO L93 Difference]: Finished difference Result 953 states and 1164 transitions. [2020-09-25 08:57:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:14,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 08:57:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:14,294 INFO L225 Difference]: With dead ends: 953 [2020-09-25 08:57:14,294 INFO L226 Difference]: Without dead ends: 580 [2020-09-25 08:57:14,296 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 08:57:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-25 08:57:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 539. [2020-09-25 08:57:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 08:57:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 08:57:14,313 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 167 [2020-09-25 08:57:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:14,314 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 08:57:14,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 08:57:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 08:57:14,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:14,318 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 08:57:14,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:14,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -849841006, now seen corresponding path program 1 times [2020-09-25 08:57:14,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:14,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137878715] [2020-09-25 08:57:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 08:57:15,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-09-25 08:57:15,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:57:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:15,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,022 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 08:57:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137878715] [2020-09-25 08:57:16,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983202035] [2020-09-25 08:57:16,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:16,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:16,025 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 4 states. [2020-09-25 08:57:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,243 INFO L93 Difference]: Finished difference Result 1005 states and 1226 transitions. [2020-09-25 08:57:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:16,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-09-25 08:57:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,248 INFO L225 Difference]: With dead ends: 1005 [2020-09-25 08:57:16,248 INFO L226 Difference]: Without dead ends: 606 [2020-09-25 08:57:16,249 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 08:57:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-09-25 08:57:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 539. [2020-09-25 08:57:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 08:57:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 08:57:16,266 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 168 [2020-09-25 08:57:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,267 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 08:57:16,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 08:57:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 08:57:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,270 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] [2020-09-25 08:57:16,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:57:16,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-09-25 08:57:16,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289408788] [2020-09-25 08:57:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 08:57:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-09-25 08:57:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 08:57:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:57:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:17,605 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 08:57:17,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289408788] [2020-09-25 08:57:17,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:17,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:17,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986616985] [2020-09-25 08:57:17,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:17,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:17,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:17,608 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 08:57:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:17,723 INFO L93 Difference]: Finished difference Result 1325 states and 1635 transitions. [2020-09-25 08:57:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:17,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-25 08:57:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:17,733 INFO L225 Difference]: With dead ends: 1325 [2020-09-25 08:57:17,733 INFO L226 Difference]: Without dead ends: 926 [2020-09-25 08:57:17,736 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 08:57:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-25 08:57:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 924. [2020-09-25 08:57:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 08:57:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1123 transitions. [2020-09-25 08:57:17,779 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1123 transitions. Word has length 169 [2020-09-25 08:57:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,780 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1123 transitions. [2020-09-25 08:57:17,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1123 transitions. [2020-09-25 08:57:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 08:57:17,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,783 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] [2020-09-25 08:57:17,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:57:17,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1691967081, now seen corresponding path program 1 times [2020-09-25 08:57:17,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290211081] [2020-09-25 08:57:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:19,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 08:57:19,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:19,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-09-25 08:57:19,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:19,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:57:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:19,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:19,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:19,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:19,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:19,443 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 08:57:19,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290211081] [2020-09-25 08:57:19,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:19,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:19,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920065069] [2020-09-25 08:57:19,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:19,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:19,446 INFO L87 Difference]: Start difference. First operand 924 states and 1123 transitions. Second operand 4 states. [2020-09-25 08:57:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:19,679 INFO L93 Difference]: Finished difference Result 1852 states and 2277 transitions. [2020-09-25 08:57:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:19,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 08:57:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:19,685 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 08:57:19,685 INFO L226 Difference]: Without dead ends: 1068 [2020-09-25 08:57:19,687 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 08:57:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-09-25 08:57:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 884. [2020-09-25 08:57:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 08:57:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1077 transitions. [2020-09-25 08:57:19,716 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1077 transitions. Word has length 170 [2020-09-25 08:57:19,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:19,717 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1077 transitions. [2020-09-25 08:57:19,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1077 transitions. [2020-09-25 08:57:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 08:57:19,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:19,722 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] [2020-09-25 08:57:19,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:57:19,722 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:19,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1669990880, now seen corresponding path program 1 times [2020-09-25 08:57:19,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:19,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246231465] [2020-09-25 08:57:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:20,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:57:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:20,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:20,535 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 08:57:20,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246231465] [2020-09-25 08:57:20,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:20,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:20,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746622089] [2020-09-25 08:57:20,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:20,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:20,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:20,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:20,538 INFO L87 Difference]: Start difference. First operand 884 states and 1077 transitions. Second operand 4 states. [2020-09-25 08:57:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:20,777 INFO L93 Difference]: Finished difference Result 1811 states and 2234 transitions. [2020-09-25 08:57:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:20,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 08:57:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:20,785 INFO L225 Difference]: With dead ends: 1811 [2020-09-25 08:57:20,785 INFO L226 Difference]: Without dead ends: 1067 [2020-09-25 08:57:20,788 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 08:57:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-09-25 08:57:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 899. [2020-09-25 08:57:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-09-25 08:57:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1093 transitions. [2020-09-25 08:57:20,819 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1093 transitions. Word has length 170 [2020-09-25 08:57:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:20,820 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1093 transitions. [2020-09-25 08:57:20,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1093 transitions. [2020-09-25 08:57:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 08:57:20,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:20,823 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] [2020-09-25 08:57:20,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:57:20,823 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1651741770, now seen corresponding path program 1 times [2020-09-25 08:57:20,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:20,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486262310] [2020-09-25 08:57:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 08:57:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-09-25 08:57:21,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:57:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:21,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:21,837 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 08:57:21,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486262310] [2020-09-25 08:57:21,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:21,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:21,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922600803] [2020-09-25 08:57:21,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:21,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:21,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:21,840 INFO L87 Difference]: Start difference. First operand 899 states and 1093 transitions. Second operand 4 states. [2020-09-25 08:57:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:22,095 INFO L93 Difference]: Finished difference Result 1343 states and 1653 transitions. [2020-09-25 08:57:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:22,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 08:57:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:22,100 INFO L225 Difference]: With dead ends: 1343 [2020-09-25 08:57:22,100 INFO L226 Difference]: Without dead ends: 954 [2020-09-25 08:57:22,102 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 08:57:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-09-25 08:57:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 940. [2020-09-25 08:57:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-09-25 08:57:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1140 transitions. [2020-09-25 08:57:22,129 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1140 transitions. Word has length 171 [2020-09-25 08:57:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:22,130 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1140 transitions. [2020-09-25 08:57:22,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1140 transitions. [2020-09-25 08:57:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 08:57:22,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,133 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] [2020-09-25 08:57:22,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:57:22,134 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1758330393, now seen corresponding path program 1 times [2020-09-25 08:57:22,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722811173] [2020-09-25 08:57:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 08:57:23,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-25 08:57:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:57:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:23,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,867 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 08:57:23,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722811173] [2020-09-25 08:57:23,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:23,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617951879] [2020-09-25 08:57:23,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:23,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:23,869 INFO L87 Difference]: Start difference. First operand 940 states and 1140 transitions. Second operand 4 states. [2020-09-25 08:57:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,134 INFO L93 Difference]: Finished difference Result 1927 states and 2365 transitions. [2020-09-25 08:57:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:24,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 08:57:24,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,147 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 08:57:24,148 INFO L226 Difference]: Without dead ends: 1127 [2020-09-25 08:57:24,150 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 08:57:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-09-25 08:57:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 944. [2020-09-25 08:57:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-09-25 08:57:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1146 transitions. [2020-09-25 08:57:24,185 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1146 transitions. Word has length 171 [2020-09-25 08:57:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,185 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1146 transitions. [2020-09-25 08:57:24,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1146 transitions. [2020-09-25 08:57:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 08:57:24,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,189 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] [2020-09-25 08:57:24,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:57:24,189 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1256877036, now seen corresponding path program 1 times [2020-09-25 08:57:24,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557366001] [2020-09-25 08:57:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 08:57:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-09-25 08:57:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:57:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:25,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,637 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 08:57:25,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557366001] [2020-09-25 08:57:25,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:25,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:25,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440941391] [2020-09-25 08:57:25,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:25,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:25,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:25,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:25,640 INFO L87 Difference]: Start difference. First operand 944 states and 1146 transitions. Second operand 4 states. [2020-09-25 08:57:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:25,914 INFO L93 Difference]: Finished difference Result 1922 states and 2363 transitions. [2020-09-25 08:57:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:25,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 08:57:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:25,921 INFO L225 Difference]: With dead ends: 1922 [2020-09-25 08:57:25,922 INFO L226 Difference]: Without dead ends: 1118 [2020-09-25 08:57:25,924 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 08:57:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-09-25 08:57:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 925. [2020-09-25 08:57:25,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 08:57:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 08:57:25,954 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 172 [2020-09-25 08:57:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:25,955 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 08:57:25,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 08:57:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 08:57:25,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:25,958 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] [2020-09-25 08:57:25,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:57:25,959 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:25,959 INFO L82 PathProgramCache]: Analyzing trace with hash -978509581, now seen corresponding path program 1 times [2020-09-25 08:57:25,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:25,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607292389] [2020-09-25 08:57:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 08:57:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:57:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2088 [2020-09-25 08:57:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:57:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:28,128 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 08:57:28,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607292389] [2020-09-25 08:57:28,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:28,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:28,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044378431] [2020-09-25 08:57:28,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:28,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:28,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:28,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:28,131 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 4 states. [2020-09-25 08:57:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,355 INFO L93 Difference]: Finished difference Result 1911 states and 2349 transitions. [2020-09-25 08:57:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:28,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 08:57:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,363 INFO L225 Difference]: With dead ends: 1911 [2020-09-25 08:57:28,364 INFO L226 Difference]: Without dead ends: 1126 [2020-09-25 08:57:28,366 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 08:57:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-09-25 08:57:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 952. [2020-09-25 08:57:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 08:57:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 08:57:28,400 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 08:57:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,401 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 08:57:28,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 08:57:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 08:57:28,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:28,404 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] [2020-09-25 08:57:28,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:57:28,405 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash 310644027, now seen corresponding path program 1 times [2020-09-25 08:57:28,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:28,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141368691] [2020-09-25 08:57:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:57:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:30,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:30,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:30,912 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 08:57:30,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141368691] [2020-09-25 08:57:30,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:30,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:30,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424019643] [2020-09-25 08:57:30,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:30,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:30,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:30,915 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 08:57:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:31,142 INFO L93 Difference]: Finished difference Result 1900 states and 2333 transitions. [2020-09-25 08:57:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:31,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 08:57:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:31,149 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 08:57:31,149 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 08:57:31,151 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 08:57:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 08:57:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 952. [2020-09-25 08:57:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 08:57:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 08:57:31,182 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 08:57:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:31,183 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 08:57:31,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 08:57:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 08:57:31,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:31,186 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] [2020-09-25 08:57:31,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:57:31,186 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:31,187 INFO L82 PathProgramCache]: Analyzing trace with hash -33516338, now seen corresponding path program 1 times [2020-09-25 08:57:31,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:31,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040110573] [2020-09-25 08:57:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:31,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 08:57:32,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:57:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1488 [2020-09-25 08:57:32,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:57:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:32,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:32,748 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 08:57:32,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040110573] [2020-09-25 08:57:32,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:32,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:32,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062312809] [2020-09-25 08:57:32,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:32,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:32,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:32,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:32,750 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 08:57:33,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:33,019 INFO L93 Difference]: Finished difference Result 1940 states and 2381 transitions. [2020-09-25 08:57:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:33,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 08:57:33,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:33,026 INFO L225 Difference]: With dead ends: 1940 [2020-09-25 08:57:33,026 INFO L226 Difference]: Without dead ends: 1128 [2020-09-25 08:57:33,028 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 08:57:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-09-25 08:57:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 925. [2020-09-25 08:57:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 08:57:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 08:57:33,056 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 174 [2020-09-25 08:57:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:33,056 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 08:57:33,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 08:57:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 08:57:33,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:33,060 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, 1] [2020-09-25 08:57:33,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:57:33,061 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash -99229899, now seen corresponding path program 1 times [2020-09-25 08:57:33,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:33,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883421902] [2020-09-25 08:57:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 08:57:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3925 [2020-09-25 08:57:37,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 08:57:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:57:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:37,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:37,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:37,191 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 08:57:37,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883421902] [2020-09-25 08:57:37,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:37,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:37,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056949492] [2020-09-25 08:57:37,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:37,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:37,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:37,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:37,196 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 3 states. [2020-09-25 08:57:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:37,276 INFO L93 Difference]: Finished difference Result 2443 states and 3016 transitions. [2020-09-25 08:57:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:37,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 08:57:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:37,287 INFO L225 Difference]: With dead ends: 2443 [2020-09-25 08:57:37,288 INFO L226 Difference]: Without dead ends: 1658 [2020-09-25 08:57:37,290 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 08:57:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-09-25 08:57:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 960. [2020-09-25 08:57:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-25 08:57:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1172 transitions. [2020-09-25 08:57:37,331 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1172 transitions. Word has length 180 [2020-09-25 08:57:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:37,332 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1172 transitions. [2020-09-25 08:57:37,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1172 transitions. [2020-09-25 08:57:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 08:57:37,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:37,335 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, 1, 1, 1] [2020-09-25 08:57:37,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:57:37,336 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1893768638, now seen corresponding path program 1 times [2020-09-25 08:57:37,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:37,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306929413] [2020-09-25 08:57:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 08:57:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 08:57:37,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 08:57:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:57:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:37,854 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 08:57:37,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306929413] [2020-09-25 08:57:37,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:37,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:57:37,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259343083] [2020-09-25 08:57:37,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:57:37,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:57:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:57:37,857 INFO L87 Difference]: Start difference. First operand 960 states and 1172 transitions. Second operand 7 states. [2020-09-25 08:57:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:38,123 INFO L93 Difference]: Finished difference Result 1477 states and 1831 transitions. [2020-09-25 08:57:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:57:38,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 08:57:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:38,128 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 08:57:38,128 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 08:57:38,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:57:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 08:57:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 636. [2020-09-25 08:57:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-09-25 08:57:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 762 transitions. [2020-09-25 08:57:38,155 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 762 transitions. Word has length 182 [2020-09-25 08:57:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:38,156 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 762 transitions. [2020-09-25 08:57:38,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:57:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 762 transitions. [2020-09-25 08:57:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 08:57:38,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:38,159 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] [2020-09-25 08:57:38,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:57:38,160 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:38,160 INFO L82 PathProgramCache]: Analyzing trace with hash -460420793, now seen corresponding path program 1 times [2020-09-25 08:57:38,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:38,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744255460] [2020-09-25 08:57:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:38,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:38,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 08:57:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:57:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:38,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:38,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:38,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:38,610 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 08:57:38,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744255460] [2020-09-25 08:57:38,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:38,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:38,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69158106] [2020-09-25 08:57:38,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:38,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:38,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:38,613 INFO L87 Difference]: Start difference. First operand 636 states and 762 transitions. Second operand 3 states. [2020-09-25 08:57:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:38,718 INFO L93 Difference]: Finished difference Result 1585 states and 1955 transitions. [2020-09-25 08:57:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:38,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-09-25 08:57:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:38,727 INFO L225 Difference]: With dead ends: 1585 [2020-09-25 08:57:38,727 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 08:57:38,729 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 08:57:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 08:57:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 08:57:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 08:57:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1343 transitions. [2020-09-25 08:57:38,774 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1343 transitions. Word has length 196 [2020-09-25 08:57:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:38,774 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1343 transitions. [2020-09-25 08:57:38,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1343 transitions. [2020-09-25 08:57:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 08:57:38,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:38,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:38,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 08:57:38,781 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash -248337803, now seen corresponding path program 1 times [2020-09-25 08:57:38,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:38,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274254048] [2020-09-25 08:57:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 08:57:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 08:57:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 08:57:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:57:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:39,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:39,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:39,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274254048] [2020-09-25 08:57:39,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:39,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:57:39,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303215216] [2020-09-25 08:57:39,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:39,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:39,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:39,162 INFO L87 Difference]: Start difference. First operand 1103 states and 1343 transitions. Second operand 4 states. [2020-09-25 08:57:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:39,455 INFO L93 Difference]: Finished difference Result 2577 states and 3229 transitions. [2020-09-25 08:57:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:39,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-09-25 08:57:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:39,463 INFO L225 Difference]: With dead ends: 2577 [2020-09-25 08:57:39,464 INFO L226 Difference]: Without dead ends: 1598 [2020-09-25 08:57:39,466 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 08:57:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-09-25 08:57:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1258. [2020-09-25 08:57:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 08:57:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1542 transitions. [2020-09-25 08:57:39,512 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1542 transitions. Word has length 208 [2020-09-25 08:57:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:39,513 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1542 transitions. [2020-09-25 08:57:39,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1542 transitions. [2020-09-25 08:57:39,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 08:57:39,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:39,518 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] [2020-09-25 08:57:39,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 08:57:39,519 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1941211029, now seen corresponding path program 1 times [2020-09-25 08:57:39,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:39,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774830801] [2020-09-25 08:57:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 08:57:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-25 08:57:40,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:40,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774830801] [2020-09-25 08:57:40,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:40,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:57:40,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093658047] [2020-09-25 08:57:40,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:57:40,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:57:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:40,161 INFO L87 Difference]: Start difference. First operand 1258 states and 1542 transitions. Second operand 5 states. [2020-09-25 08:57:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:40,649 INFO L93 Difference]: Finished difference Result 3867 states and 4845 transitions. [2020-09-25 08:57:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:57:40,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-25 08:57:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:40,662 INFO L225 Difference]: With dead ends: 3867 [2020-09-25 08:57:40,662 INFO L226 Difference]: Without dead ends: 2665 [2020-09-25 08:57:40,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:57:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2020-09-25 08:57:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1296. [2020-09-25 08:57:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 08:57:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1592 transitions. [2020-09-25 08:57:40,718 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1592 transitions. Word has length 216 [2020-09-25 08:57:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:40,719 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1592 transitions. [2020-09-25 08:57:40,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:57:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1592 transitions. [2020-09-25 08:57:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 08:57:40,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:40,724 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] [2020-09-25 08:57:40,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 08:57:40,725 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-25 08:57:40,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:40,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874044999] [2020-09-25 08:57:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 08:57:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:57:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:41,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:41,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:41,076 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 08:57:41,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874044999] [2020-09-25 08:57:41,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:41,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:41,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34637247] [2020-09-25 08:57:41,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:41,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:41,079 INFO L87 Difference]: Start difference. First operand 1296 states and 1592 transitions. Second operand 3 states. [2020-09-25 08:57:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:41,204 INFO L93 Difference]: Finished difference Result 3001 states and 3739 transitions. [2020-09-25 08:57:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:41,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 08:57:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:41,216 INFO L225 Difference]: With dead ends: 3001 [2020-09-25 08:57:41,216 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 08:57:41,219 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 08:57:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 08:57:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1859. [2020-09-25 08:57:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2020-09-25 08:57:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2299 transitions. [2020-09-25 08:57:41,291 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2299 transitions. Word has length 224 [2020-09-25 08:57:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:41,292 INFO L479 AbstractCegarLoop]: Abstraction has 1859 states and 2299 transitions. [2020-09-25 08:57:41,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2299 transitions. [2020-09-25 08:57:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 08:57:41,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:41,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:41,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 08:57:41,300 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash 309373079, now seen corresponding path program 1 times [2020-09-25 08:57:41,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:41,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608978362] [2020-09-25 08:57:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 08:57:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 08:57:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:41,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 08:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:57:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:41,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608978362] [2020-09-25 08:57:41,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:41,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:57:41,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186693318] [2020-09-25 08:57:41,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:41,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:41,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:41,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:41,943 INFO L87 Difference]: Start difference. First operand 1859 states and 2299 transitions. Second operand 4 states. [2020-09-25 08:57:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:42,304 INFO L93 Difference]: Finished difference Result 4364 states and 5491 transitions. [2020-09-25 08:57:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:42,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 08:57:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:42,319 INFO L225 Difference]: With dead ends: 4364 [2020-09-25 08:57:42,319 INFO L226 Difference]: Without dead ends: 2505 [2020-09-25 08:57:42,325 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 08:57:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2020-09-25 08:57:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2175. [2020-09-25 08:57:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-09-25 08:57:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2685 transitions. [2020-09-25 08:57:42,418 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2685 transitions. Word has length 235 [2020-09-25 08:57:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:42,418 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 2685 transitions. [2020-09-25 08:57:42,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2685 transitions. [2020-09-25 08:57:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 08:57:42,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:42,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:42,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 08:57:42,424 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1135250487, now seen corresponding path program 1 times [2020-09-25 08:57:42,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:42,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573528620] [2020-09-25 08:57:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 08:57:43,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:57:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:43,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573528620] [2020-09-25 08:57:43,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:43,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:57:43,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357767413] [2020-09-25 08:57:43,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:43,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:43,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:43,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:43,227 INFO L87 Difference]: Start difference. First operand 2175 states and 2685 transitions. Second operand 4 states. [2020-09-25 08:57:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:43,484 INFO L93 Difference]: Finished difference Result 4568 states and 5708 transitions. [2020-09-25 08:57:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:43,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 08:57:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:43,513 INFO L225 Difference]: With dead ends: 4568 [2020-09-25 08:57:43,513 INFO L226 Difference]: Without dead ends: 2453 [2020-09-25 08:57:43,527 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 08:57:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-09-25 08:57:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2313. [2020-09-25 08:57:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2313 states. [2020-09-25 08:57:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2846 transitions. [2020-09-25 08:57:43,612 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2846 transitions. Word has length 235 [2020-09-25 08:57:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:43,612 INFO L479 AbstractCegarLoop]: Abstraction has 2313 states and 2846 transitions. [2020-09-25 08:57:43,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2846 transitions. [2020-09-25 08:57:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 08:57:43,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:43,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:43,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 08:57:43,618 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:43,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1624554569, now seen corresponding path program 1 times [2020-09-25 08:57:43,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:43,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 08:57:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 08:57:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:57:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:44,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:44,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:44,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 08:57:44,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:44,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:44,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35981695] [2020-09-25 08:57:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:44,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:44,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:44,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:44,678 INFO L87 Difference]: Start difference. First operand 2313 states and 2846 transitions. Second operand 4 states. [2020-09-25 08:57:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:45,266 INFO L93 Difference]: Finished difference Result 7083 states and 8829 transitions. [2020-09-25 08:57:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:45,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-09-25 08:57:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:45,276 INFO L225 Difference]: With dead ends: 7083 [2020-09-25 08:57:45,276 INFO L226 Difference]: Without dead ends: 4926 [2020-09-25 08:57:45,282 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 08:57:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2020-09-25 08:57:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 2466. [2020-09-25 08:57:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2020-09-25 08:57:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3014 transitions. [2020-09-25 08:57:45,363 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3014 transitions. Word has length 243 [2020-09-25 08:57:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:45,363 INFO L479 AbstractCegarLoop]: Abstraction has 2466 states and 3014 transitions. [2020-09-25 08:57:45,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3014 transitions. [2020-09-25 08:57:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 08:57:45,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:45,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:45,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 08:57:45,369 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -526940329, now seen corresponding path program 1 times [2020-09-25 08:57:45,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:45,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492551225] [2020-09-25 08:57:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 08:57:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 08:57:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 08:57:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:57:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:46,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492551225] [2020-09-25 08:57:46,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:46,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:46,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87460190] [2020-09-25 08:57:46,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:46,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:46,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:46,518 INFO L87 Difference]: Start difference. First operand 2466 states and 3014 transitions. Second operand 4 states. [2020-09-25 08:57:47,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:47,034 INFO L93 Difference]: Finished difference Result 7319 states and 9013 transitions. [2020-09-25 08:57:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:47,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-09-25 08:57:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:47,046 INFO L225 Difference]: With dead ends: 7319 [2020-09-25 08:57:47,046 INFO L226 Difference]: Without dead ends: 5009 [2020-09-25 08:57:47,052 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 08:57:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states.